./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/seq-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/seq-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c770a3141edeab927df0da4e8c2152e1fb2e87b0c43a352500a7e3d3cff4533 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 04:42:47,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 04:42:48,003 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 04:42:48,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 04:42:48,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 04:42:48,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 04:42:48,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 04:42:48,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 04:42:48,035 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 04:42:48,035 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 04:42:48,035 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 04:42:48,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 04:42:48,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 04:42:48,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 04:42:48,037 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 04:42:48,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 04:42:48,037 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 04:42:48,037 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 04:42:48,037 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 04:42:48,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 04:42:48,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 04:42:48,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 04:42:48,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:42:48,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 04:42:48,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 04:42:48,037 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 04:42:48,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 04:42:48,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 04:42:48,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 04:42:48,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 04:42:48,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 04:42:48,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 04:42:48,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 04:42:48,038 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 -> 6c770a3141edeab927df0da4e8c2152e1fb2e87b0c43a352500a7e3d3cff4533 [2025-03-08 04:42:48,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 04:42:48,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 04:42:48,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 04:42:48,281 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 04:42:48,281 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 04:42:48,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/seq-3.i [2025-03-08 04:42:49,439 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa4451e4/259235451041481099cdc4a31ef3efca/FLAGec60d0d6b [2025-03-08 04:42:49,652 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 04:42:49,653 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/seq-3.i [2025-03-08 04:42:49,659 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa4451e4/259235451041481099cdc4a31ef3efca/FLAGec60d0d6b [2025-03-08 04:42:49,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa4451e4/259235451041481099cdc4a31ef3efca [2025-03-08 04:42:49,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 04:42:49,678 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 04:42:49,679 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 04:42:49,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 04:42:49,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 04:42:49,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697dc5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49, skipping insertion in model container [2025-03-08 04:42:49,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,697 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 04:42:49,812 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/loop-invgen/seq-3.i[893,906] [2025-03-08 04:42:49,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:42:49,832 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 04:42:49,840 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/loop-invgen/seq-3.i[893,906] [2025-03-08 04:42:49,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:42:49,853 INFO L204 MainTranslator]: Completed translation [2025-03-08 04:42:49,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49 WrapperNode [2025-03-08 04:42:49,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 04:42:49,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 04:42:49,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 04:42:49,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 04:42:49,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,875 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2025-03-08 04:42:49,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 04:42:49,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 04:42:49,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 04:42:49,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 04:42:49,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,893 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]. [2025-03-08 04:42:49,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,897 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 04:42:49,903 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 04:42:49,903 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 04:42:49,903 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 04:42:49,904 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (1/1) ... [2025-03-08 04:42:49,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:42:49,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:49,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 04:42:49,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 04:42:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 04:42:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 04:42:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 04:42:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 04:42:49,992 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 04:42:49,993 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 04:42:50,118 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-03-08 04:42:50,118 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 04:42:50,126 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 04:42:50,127 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 04:42:50,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:42:50 BoogieIcfgContainer [2025-03-08 04:42:50,127 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 04:42:50,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 04:42:50,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 04:42:50,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 04:42:50,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:42:49" (1/3) ... [2025-03-08 04:42:50,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed689bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:42:50, skipping insertion in model container [2025-03-08 04:42:50,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:49" (2/3) ... [2025-03-08 04:42:50,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed689bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:42:50, skipping insertion in model container [2025-03-08 04:42:50,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:42:50" (3/3) ... [2025-03-08 04:42:50,136 INFO L128 eAbstractionObserver]: Analyzing ICFG seq-3.i [2025-03-08 04:42:50,145 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 04:42:50,148 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG seq-3.i that has 1 procedures, 14 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-08 04:42:50,186 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 04:42:50,196 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;@65863541, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 04:42:50,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 04:42:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 04:42:50,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:50,204 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:50,205 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:50,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:50,210 INFO L85 PathProgramCache]: Analyzing trace with hash 297828971, now seen corresponding path program 1 times [2025-03-08 04:42:50,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:50,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146224311] [2025-03-08 04:42:50,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:50,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:50,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 04:42:50,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 04:42:50,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:50,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:50,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:50,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146224311] [2025-03-08 04:42:50,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146224311] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:42:50,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 04:42:50,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 04:42:50,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497034361] [2025-03-08 04:42:50,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:42:50,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 04:42:50,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:50,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 04:42:50,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 04:42:50,453 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:50,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:50,497 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2025-03-08 04:42:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 04:42:50,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2025-03-08 04:42:50,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:50,503 INFO L225 Difference]: With dead ends: 26 [2025-03-08 04:42:50,503 INFO L226 Difference]: Without dead ends: 13 [2025-03-08 04:42:50,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 04:42:50,509 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:50,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 33 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-03-08 04:42:50,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2025-03-08 04:42:50,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2025-03-08 04:42:50,528 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2025-03-08 04:42:50,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:50,529 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2025-03-08 04:42:50,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:50,529 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2025-03-08 04:42:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-08 04:42:50,529 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:50,529 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:50,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 04:42:50,530 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:50,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash 643748569, now seen corresponding path program 1 times [2025-03-08 04:42:50,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:50,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535586231] [2025-03-08 04:42:50,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:50,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:50,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 04:42:50,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 04:42:50,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:50,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:50,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:50,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535586231] [2025-03-08 04:42:50,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535586231] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:50,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188826400] [2025-03-08 04:42:50,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:50,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:50,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:50,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:50,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 04:42:50,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 04:42:50,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 04:42:50,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:50,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:50,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 04:42:50,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:50,727 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 04:42:50,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188826400] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:42:50,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 04:42:50,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-08 04:42:50,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863225172] [2025-03-08 04:42:50,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:42:50,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 04:42:50,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:50,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 04:42:50,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 04:42:50,729 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:50,761 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2025-03-08 04:42:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 04:42:50,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-08 04:42:50,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:50,762 INFO L225 Difference]: With dead ends: 23 [2025-03-08 04:42:50,762 INFO L226 Difference]: Without dead ends: 21 [2025-03-08 04:42:50,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-08 04:42:50,762 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:50,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 28 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:50,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-08 04:42:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2025-03-08 04:42:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2025-03-08 04:42:50,765 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2025-03-08 04:42:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:50,765 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2025-03-08 04:42:50,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2025-03-08 04:42:50,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 04:42:50,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:50,766 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:50,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 04:42:50,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:50,966 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:50,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash 885483473, now seen corresponding path program 1 times [2025-03-08 04:42:50,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:50,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321953736] [2025-03-08 04:42:50,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:50,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:50,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 04:42:50,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 04:42:50,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:50,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:51,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:51,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321953736] [2025-03-08 04:42:51,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321953736] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:51,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972946874] [2025-03-08 04:42:51,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:51,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:51,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:51,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:51,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 04:42:51,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 04:42:51,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 04:42:51,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:51,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:51,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 04:42:51,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:51,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:51,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972946874] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:51,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:51,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-03-08 04:42:51,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932707103] [2025-03-08 04:42:51,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:51,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 04:42:51,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:51,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 04:42:51,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-03-08 04:42:51,293 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:51,348 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2025-03-08 04:42:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 04:42:51,349 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 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 13 [2025-03-08 04:42:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:51,349 INFO L225 Difference]: With dead ends: 25 [2025-03-08 04:42:51,349 INFO L226 Difference]: Without dead ends: 16 [2025-03-08 04:42:51,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-03-08 04:42:51,350 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:51,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-03-08 04:42:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-03-08 04:42:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2025-03-08 04:42:51,352 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 13 [2025-03-08 04:42:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:51,354 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2025-03-08 04:42:51,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2025-03-08 04:42:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 04:42:51,355 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:51,355 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:51,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:51,559 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,SelfDestructingSolverStorable2 [2025-03-08 04:42:51,559 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:51,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:51,560 INFO L85 PathProgramCache]: Analyzing trace with hash 820839345, now seen corresponding path program 1 times [2025-03-08 04:42:51,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861697820] [2025-03-08 04:42:51,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:51,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:51,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 04:42:51,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 04:42:51,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:51,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:51,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:51,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861697820] [2025-03-08 04:42:51,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861697820] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:51,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313964160] [2025-03-08 04:42:51,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:51,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:51,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:51,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:51,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 04:42:51,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 04:42:51,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 04:42:51,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:51,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:51,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 04:42:51,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:51,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313964160] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:51,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-08 04:42:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272982243] [2025-03-08 04:42:51,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:51,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 04:42:51,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:51,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 04:42:51,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-03-08 04:42:51,794 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:51,854 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2025-03-08 04:42:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 04:42:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 13 [2025-03-08 04:42:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:51,856 INFO L225 Difference]: With dead ends: 27 [2025-03-08 04:42:51,856 INFO L226 Difference]: Without dead ends: 18 [2025-03-08 04:42:51,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-03-08 04:42:51,857 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:51,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:51,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-03-08 04:42:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2025-03-08 04:42:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2025-03-08 04:42:51,862 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 13 [2025-03-08 04:42:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:51,862 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2025-03-08 04:42:51,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2025-03-08 04:42:51,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 04:42:51,863 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:51,863 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:51,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:52,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:52,064 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:52,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash 936104255, now seen corresponding path program 2 times [2025-03-08 04:42:52,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:52,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484078805] [2025-03-08 04:42:52,065 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:52,068 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-08 04:42:52,072 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 04:42:52,072 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:52,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:52,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484078805] [2025-03-08 04:42:52,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484078805] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205033284] [2025-03-08 04:42:52,148 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:52,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:52,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:52,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:52,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 04:42:52,173 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-08 04:42:52,180 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 04:42:52,180 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:52,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:52,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 04:42:52,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:52,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:52,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205033284] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:52,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:52,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2025-03-08 04:42:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995998168] [2025-03-08 04:42:52,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:52,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 04:42:52,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:52,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 04:42:52,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 04:42:52,244 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:52,276 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2025-03-08 04:42:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 04:42:52,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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 14 [2025-03-08 04:42:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:52,276 INFO L225 Difference]: With dead ends: 28 [2025-03-08 04:42:52,276 INFO L226 Difference]: Without dead ends: 26 [2025-03-08 04:42:52,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-03-08 04:42:52,277 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:52,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-03-08 04:42:52,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2025-03-08 04:42:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2025-03-08 04:42:52,280 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2025-03-08 04:42:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:52,280 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2025-03-08 04:42:52,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:52,280 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2025-03-08 04:42:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 04:42:52,280 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:52,280 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:52,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:52,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:52,481 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:52,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:52,482 INFO L85 PathProgramCache]: Analyzing trace with hash 260048811, now seen corresponding path program 3 times [2025-03-08 04:42:52,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:52,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230541791] [2025-03-08 04:42:52,482 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:52,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:52,485 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-03-08 04:42:52,490 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 04:42:52,490 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 04:42:52,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:52,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230541791] [2025-03-08 04:42:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230541791] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937023112] [2025-03-08 04:42:52,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:52,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:52,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:52,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:52,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 04:42:52,592 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-03-08 04:42:52,600 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 04:42:52,600 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 04:42:52,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:52,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 04:42:52,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:52,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:52,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937023112] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:52,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:52,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-03-08 04:42:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446556986] [2025-03-08 04:42:52,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:52,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 04:42:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:52,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 04:42:52,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-03-08 04:42:52,792 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 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) [2025-03-08 04:42:52,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:52,850 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2025-03-08 04:42:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 04:42:52,851 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 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 17 [2025-03-08 04:42:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:52,851 INFO L225 Difference]: With dead ends: 34 [2025-03-08 04:42:52,851 INFO L226 Difference]: Without dead ends: 22 [2025-03-08 04:42:52,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2025-03-08 04:42:52,852 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:52,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-08 04:42:52,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2025-03-08 04:42:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:52,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2025-03-08 04:42:52,854 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2025-03-08 04:42:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:52,855 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2025-03-08 04:42:52,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 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) [2025-03-08 04:42:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2025-03-08 04:42:52,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 04:42:52,855 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:52,855 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:52,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 04:42:53,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:53,059 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:53,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:53,059 INFO L85 PathProgramCache]: Analyzing trace with hash 95728523, now seen corresponding path program 1 times [2025-03-08 04:42:53,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:53,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888981386] [2025-03-08 04:42:53,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:53,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:53,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 04:42:53,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 04:42:53,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:53,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:53,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888981386] [2025-03-08 04:42:53,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888981386] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089961591] [2025-03-08 04:42:53,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:53,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:53,139 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:53,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 04:42:53,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 04:42:53,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 04:42:53,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:53,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:53,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 04:42:53,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:53,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:53,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089961591] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:53,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:53,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-03-08 04:42:53,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407734567] [2025-03-08 04:42:53,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:53,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 04:42:53,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:53,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 04:42:53,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:42:53,341 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 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) [2025-03-08 04:42:53,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:53,387 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2025-03-08 04:42:53,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 04:42:53,387 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 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 17 [2025-03-08 04:42:53,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:53,388 INFO L225 Difference]: With dead ends: 35 [2025-03-08 04:42:53,388 INFO L226 Difference]: Without dead ends: 23 [2025-03-08 04:42:53,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-03-08 04:42:53,389 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:53,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-08 04:42:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2025-03-08 04:42:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2025-03-08 04:42:53,391 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2025-03-08 04:42:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:53,391 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2025-03-08 04:42:53,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 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) [2025-03-08 04:42:53,391 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2025-03-08 04:42:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 04:42:53,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:53,392 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:53,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:53,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:53,596 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:53,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1572140117, now seen corresponding path program 2 times [2025-03-08 04:42:53,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:53,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575264616] [2025-03-08 04:42:53,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:53,600 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-08 04:42:53,603 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 04:42:53,603 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:53,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:53,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:53,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575264616] [2025-03-08 04:42:53,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575264616] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:53,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121441287] [2025-03-08 04:42:53,684 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:53,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:53,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:53,686 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:53,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 04:42:53,712 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-08 04:42:53,720 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 04:42:53,720 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:53,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:53,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 04:42:53,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:53,810 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:53,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121441287] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:53,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:53,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-03-08 04:42:53,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352576277] [2025-03-08 04:42:53,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:53,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 04:42:53,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:53,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 04:42:53,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-03-08 04:42:53,869 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:53,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:53,933 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2025-03-08 04:42:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 04:42:53,934 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 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 17 [2025-03-08 04:42:53,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:53,934 INFO L225 Difference]: With dead ends: 36 [2025-03-08 04:42:53,934 INFO L226 Difference]: Without dead ends: 24 [2025-03-08 04:42:53,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:42:53,935 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:53,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:53,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-03-08 04:42:53,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2025-03-08 04:42:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2025-03-08 04:42:53,938 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2025-03-08 04:42:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:53,938 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2025-03-08 04:42:53,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2025-03-08 04:42:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 04:42:53,939 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:53,939 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:53,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 04:42:54,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:54,140 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:54,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:54,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1103754727, now seen corresponding path program 4 times [2025-03-08 04:42:54,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:54,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300993855] [2025-03-08 04:42:54,140 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:54,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:54,144 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-08 04:42:54,149 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 04:42:54,149 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:54,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:54,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:54,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300993855] [2025-03-08 04:42:54,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300993855] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:54,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175583567] [2025-03-08 04:42:54,209 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:54,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:54,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:54,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:54,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 04:42:54,233 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-08 04:42:54,242 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 04:42:54,242 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:54,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:54,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 04:42:54,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:54,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:54,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175583567] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:54,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:54,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2025-03-08 04:42:54,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292873668] [2025-03-08 04:42:54,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:54,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 04:42:54,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:54,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 04:42:54,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-08 04:42:54,309 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:54,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:54,359 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2025-03-08 04:42:54,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 04:42:54,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-08 04:42:54,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:54,360 INFO L225 Difference]: With dead ends: 33 [2025-03-08 04:42:54,360 INFO L226 Difference]: Without dead ends: 31 [2025-03-08 04:42:54,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-08 04:42:54,361 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:54,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 50 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:54,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-03-08 04:42:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2025-03-08 04:42:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2025-03-08 04:42:54,366 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2025-03-08 04:42:54,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:54,366 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2025-03-08 04:42:54,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:54,366 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2025-03-08 04:42:54,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 04:42:54,367 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:54,367 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:54,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:54,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-08 04:42:54,571 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:54,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash 313387153, now seen corresponding path program 5 times [2025-03-08 04:42:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:54,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091986411] [2025-03-08 04:42:54,571 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:54,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:54,580 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 4 equivalence classes. [2025-03-08 04:42:54,589 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:42:54,589 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-08 04:42:54,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091986411] [2025-03-08 04:42:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091986411] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129244972] [2025-03-08 04:42:54,691 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:54,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:54,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:54,693 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:54,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 04:42:54,715 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 4 equivalence classes. [2025-03-08 04:42:54,724 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:42:54,725 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-08 04:42:54,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:54,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 04:42:54,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:54,862 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129244972] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:54,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:54,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2025-03-08 04:42:54,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914027005] [2025-03-08 04:42:54,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:54,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-08 04:42:54,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:54,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-08 04:42:54,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2025-03-08 04:42:54,925 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:54,965 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2025-03-08 04:42:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 04:42:54,966 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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 21 [2025-03-08 04:42:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:54,966 INFO L225 Difference]: With dead ends: 43 [2025-03-08 04:42:54,966 INFO L226 Difference]: Without dead ends: 28 [2025-03-08 04:42:54,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2025-03-08 04:42:54,967 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:54,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-08 04:42:54,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2025-03-08 04:42:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2025-03-08 04:42:54,972 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 21 [2025-03-08 04:42:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:54,972 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2025-03-08 04:42:54,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2025-03-08 04:42:54,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 04:42:54,973 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:54,973 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:54,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:55,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 04:42:55,174 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:55,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:55,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1156162673, now seen corresponding path program 2 times [2025-03-08 04:42:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:55,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371021731] [2025-03-08 04:42:55,174 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:55,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:55,180 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-08 04:42:55,184 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:42:55,184 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:55,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371021731] [2025-03-08 04:42:55,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371021731] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500843686] [2025-03-08 04:42:55,287 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:55,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:55,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:55,289 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:55,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 04:42:55,311 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-08 04:42:55,319 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:42:55,320 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:55,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:55,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 04:42:55,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:55,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:55,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500843686] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:55,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:55,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2025-03-08 04:42:55,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878221737] [2025-03-08 04:42:55,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:55,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-08 04:42:55,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:55,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-08 04:42:55,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2025-03-08 04:42:55,525 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:55,605 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2025-03-08 04:42:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 04:42:55,605 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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 21 [2025-03-08 04:42:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:55,605 INFO L225 Difference]: With dead ends: 44 [2025-03-08 04:42:55,605 INFO L226 Difference]: Without dead ends: 29 [2025-03-08 04:42:55,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2025-03-08 04:42:55,606 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:55,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-08 04:42:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2025-03-08 04:42:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2025-03-08 04:42:55,610 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 21 [2025-03-08 04:42:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:55,610 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2025-03-08 04:42:55,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2025-03-08 04:42:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 04:42:55,610 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:55,610 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:55,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:55,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 04:42:55,811 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:55,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2141786991, now seen corresponding path program 3 times [2025-03-08 04:42:55,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:55,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915150851] [2025-03-08 04:42:55,812 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:55,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:55,815 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 4 equivalence classes. [2025-03-08 04:42:55,820 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:42:55,820 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-08 04:42:55,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915150851] [2025-03-08 04:42:55,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915150851] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125916271] [2025-03-08 04:42:55,910 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:55,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:55,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:55,912 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:55,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 04:42:55,933 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 4 equivalence classes. [2025-03-08 04:42:55,941 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:42:55,942 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-08 04:42:55,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:55,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 04:42:55,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:56,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:56,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125916271] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:56,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:56,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2025-03-08 04:42:56,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535844705] [2025-03-08 04:42:56,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:56,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-08 04:42:56,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:56,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-08 04:42:56,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2025-03-08 04:42:56,110 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:56,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:56,166 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2025-03-08 04:42:56,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 04:42:56,166 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 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 21 [2025-03-08 04:42:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:56,166 INFO L225 Difference]: With dead ends: 45 [2025-03-08 04:42:56,166 INFO L226 Difference]: Without dead ends: 30 [2025-03-08 04:42:56,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-03-08 04:42:56,167 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:56,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-03-08 04:42:56,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2025-03-08 04:42:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:56,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2025-03-08 04:42:56,169 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 21 [2025-03-08 04:42:56,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:56,169 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2025-03-08 04:42:56,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:56,169 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2025-03-08 04:42:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 04:42:56,173 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:56,173 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:56,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-08 04:42:56,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 04:42:56,374 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:56,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1139793807, now seen corresponding path program 3 times [2025-03-08 04:42:56,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:56,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955134339] [2025-03-08 04:42:56,374 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:56,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:56,378 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 4 equivalence classes. [2025-03-08 04:42:56,382 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:42:56,382 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-08 04:42:56,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:56,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955134339] [2025-03-08 04:42:56,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955134339] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679557620] [2025-03-08 04:42:56,454 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:56,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:56,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:56,457 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:56,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 04:42:56,479 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 4 equivalence classes. [2025-03-08 04:42:56,488 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:42:56,488 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-08 04:42:56,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:56,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 04:42:56,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:56,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:56,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679557620] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:56,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:56,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2025-03-08 04:42:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676815165] [2025-03-08 04:42:56,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:56,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 04:42:56,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:56,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 04:42:56,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2025-03-08 04:42:56,649 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:56,723 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2025-03-08 04:42:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 04:42:56,724 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 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 21 [2025-03-08 04:42:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:56,724 INFO L225 Difference]: With dead ends: 45 [2025-03-08 04:42:56,724 INFO L226 Difference]: Without dead ends: 30 [2025-03-08 04:42:56,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-03-08 04:42:56,725 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:56,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:56,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-03-08 04:42:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2025-03-08 04:42:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2025-03-08 04:42:56,727 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 21 [2025-03-08 04:42:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:56,727 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2025-03-08 04:42:56,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2025-03-08 04:42:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 04:42:56,727 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:56,727 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:56,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-08 04:42:56,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 04:42:56,929 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:56,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1734278145, now seen corresponding path program 6 times [2025-03-08 04:42:56,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:56,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627633230] [2025-03-08 04:42:56,929 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:56,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:56,932 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 4 equivalence classes. [2025-03-08 04:42:56,938 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 04:42:56,938 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-08 04:42:56,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:56,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:56,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627633230] [2025-03-08 04:42:56,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627633230] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:56,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982698922] [2025-03-08 04:42:56,993 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:56,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:56,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:56,995 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:56,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 04:42:57,019 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 4 equivalence classes. [2025-03-08 04:42:57,028 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 04:42:57,028 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-08 04:42:57,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:57,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 04:42:57,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:57,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:57,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982698922] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:57,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:57,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2025-03-08 04:42:57,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097345353] [2025-03-08 04:42:57,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:57,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 04:42:57,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:57,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 04:42:57,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 04:42:57,095 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:57,148 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2025-03-08 04:42:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 04:42:57,148 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 22 [2025-03-08 04:42:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:57,148 INFO L225 Difference]: With dead ends: 38 [2025-03-08 04:42:57,148 INFO L226 Difference]: Without dead ends: 36 [2025-03-08 04:42:57,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2025-03-08 04:42:57,149 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:57,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 62 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-08 04:42:57,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2025-03-08 04:42:57,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2025-03-08 04:42:57,151 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 22 [2025-03-08 04:42:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:57,152 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2025-03-08 04:42:57,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2025-03-08 04:42:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 04:42:57,152 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:57,152 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:57,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:57,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 04:42:57,353 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:57,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:57,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1717773077, now seen corresponding path program 7 times [2025-03-08 04:42:57,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:57,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125408356] [2025-03-08 04:42:57,353 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:57,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:57,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 04:42:57,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:42:57,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:57,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:57,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:57,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125408356] [2025-03-08 04:42:57,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125408356] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:57,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092681612] [2025-03-08 04:42:57,452 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:57,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:57,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:57,454 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:57,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 04:42:57,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 04:42:57,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:42:57,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:57,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:57,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 04:42:57,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:57,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:57,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092681612] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:57,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:57,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2025-03-08 04:42:57,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87074706] [2025-03-08 04:42:57,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:57,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-08 04:42:57,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:57,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-08 04:42:57,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2025-03-08 04:42:57,730 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:57,786 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2025-03-08 04:42:57,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 04:42:57,786 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 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 25 [2025-03-08 04:42:57,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:57,787 INFO L225 Difference]: With dead ends: 52 [2025-03-08 04:42:57,787 INFO L226 Difference]: Without dead ends: 34 [2025-03-08 04:42:57,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2025-03-08 04:42:57,788 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:57,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:57,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-03-08 04:42:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2025-03-08 04:42:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 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) [2025-03-08 04:42:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2025-03-08 04:42:57,792 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 25 [2025-03-08 04:42:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:57,792 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2025-03-08 04:42:57,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2025-03-08 04:42:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 04:42:57,793 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:57,793 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:57,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:57,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:57,994 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:57,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1915246389, now seen corresponding path program 4 times [2025-03-08 04:42:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527055227] [2025-03-08 04:42:57,994 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:57,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:57,998 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-03-08 04:42:58,011 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:42:58,011 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:58,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:58,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:58,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527055227] [2025-03-08 04:42:58,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527055227] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:58,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039632085] [2025-03-08 04:42:58,100 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:58,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:58,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:58,102 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:58,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-08 04:42:58,125 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-03-08 04:42:58,136 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:42:58,136 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:58,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:58,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 04:42:58,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:58,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:58,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039632085] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:58,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:58,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2025-03-08 04:42:58,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016796164] [2025-03-08 04:42:58,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:58,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-08 04:42:58,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:58,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-08 04:42:58,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2025-03-08 04:42:58,341 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:58,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:58,390 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2025-03-08 04:42:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 04:42:58,390 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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 25 [2025-03-08 04:42:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:58,391 INFO L225 Difference]: With dead ends: 54 [2025-03-08 04:42:58,391 INFO L226 Difference]: Without dead ends: 36 [2025-03-08 04:42:58,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2025-03-08 04:42:58,391 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:58,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-08 04:42:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2025-03-08 04:42:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 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) [2025-03-08 04:42:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2025-03-08 04:42:58,394 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 25 [2025-03-08 04:42:58,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:58,395 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2025-03-08 04:42:58,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2025-03-08 04:42:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 04:42:58,395 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:58,395 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:58,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:58,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 04:42:58,596 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:58,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:58,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1126424811, now seen corresponding path program 5 times [2025-03-08 04:42:58,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:58,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202724843] [2025-03-08 04:42:58,597 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:58,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:58,599 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 5 equivalence classes. [2025-03-08 04:42:58,603 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:42:58,603 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-03-08 04:42:58,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:58,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:58,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202724843] [2025-03-08 04:42:58,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202724843] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:58,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284228652] [2025-03-08 04:42:58,682 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:58,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:58,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:58,684 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:58,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-08 04:42:58,710 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 5 equivalence classes. [2025-03-08 04:42:58,720 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:42:58,720 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-03-08 04:42:58,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:58,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 04:42:58,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:58,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:58,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284228652] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:58,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2025-03-08 04:42:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853369891] [2025-03-08 04:42:58,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:58,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-08 04:42:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:58,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-08 04:42:58,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2025-03-08 04:42:58,929 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:58,996 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2025-03-08 04:42:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 04:42:58,997 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 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 25 [2025-03-08 04:42:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:58,997 INFO L225 Difference]: With dead ends: 55 [2025-03-08 04:42:58,997 INFO L226 Difference]: Without dead ends: 37 [2025-03-08 04:42:58,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 10 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2025-03-08 04:42:58,998 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:58,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-08 04:42:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-03-08 04:42:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 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) [2025-03-08 04:42:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2025-03-08 04:42:59,000 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 25 [2025-03-08 04:42:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:59,001 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2025-03-08 04:42:59,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2025-03-08 04:42:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 04:42:59,001 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:59,001 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:59,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-08 04:42:59,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-08 04:42:59,201 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:59,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash -715119413, now seen corresponding path program 6 times [2025-03-08 04:42:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:59,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65423017] [2025-03-08 04:42:59,202 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:59,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:59,205 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 5 equivalence classes. [2025-03-08 04:42:59,209 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:42:59,209 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-03-08 04:42:59,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:59,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:59,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65423017] [2025-03-08 04:42:59,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65423017] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:59,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210807918] [2025-03-08 04:42:59,291 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:59,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:59,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:59,294 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:59,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-08 04:42:59,321 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 5 equivalence classes. [2025-03-08 04:42:59,331 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:42:59,331 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-03-08 04:42:59,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:59,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 04:42:59,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:59,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:59,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210807918] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:59,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:59,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2025-03-08 04:42:59,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381949132] [2025-03-08 04:42:59,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:59,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 04:42:59,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:59,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 04:42:59,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2025-03-08 04:42:59,524 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:59,583 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2025-03-08 04:42:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 04:42:59,584 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 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 25 [2025-03-08 04:42:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:59,584 INFO L225 Difference]: With dead ends: 55 [2025-03-08 04:42:59,584 INFO L226 Difference]: Without dead ends: 37 [2025-03-08 04:42:59,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2025-03-08 04:42:59,585 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:59,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:59,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-08 04:42:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-03-08 04:42:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 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) [2025-03-08 04:42:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2025-03-08 04:42:59,588 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 25 [2025-03-08 04:42:59,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:59,588 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2025-03-08 04:42:59,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2025-03-08 04:42:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 04:42:59,588 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:59,588 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:59,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:59,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-08 04:42:59,792 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:59,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash -358882069, now seen corresponding path program 4 times [2025-03-08 04:42:59,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:59,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375519112] [2025-03-08 04:42:59,792 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:59,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:59,795 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-03-08 04:42:59,810 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:42:59,810 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:59,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:59,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:59,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375519112] [2025-03-08 04:42:59,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375519112] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:59,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128935265] [2025-03-08 04:42:59,887 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:59,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:59,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:59,889 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:59,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-08 04:42:59,916 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-03-08 04:42:59,925 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:42:59,926 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:59,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:59,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 04:42:59,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:00,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:00,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128935265] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:00,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:00,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2025-03-08 04:43:00,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193700913] [2025-03-08 04:43:00,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:00,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 04:43:00,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:00,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 04:43:00,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2025-03-08 04:43:00,105 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:00,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:00,138 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2025-03-08 04:43:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 04:43:00,138 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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 25 [2025-03-08 04:43:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:00,139 INFO L225 Difference]: With dead ends: 54 [2025-03-08 04:43:00,139 INFO L226 Difference]: Without dead ends: 36 [2025-03-08 04:43:00,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 10 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2025-03-08 04:43:00,139 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:00,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-08 04:43:00,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2025-03-08 04:43:00,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2025-03-08 04:43:00,142 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 25 [2025-03-08 04:43:00,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:00,142 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2025-03-08 04:43:00,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:00,142 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2025-03-08 04:43:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-08 04:43:00,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:00,142 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:00,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:00,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:00,343 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:00,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1889046873, now seen corresponding path program 8 times [2025-03-08 04:43:00,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:00,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171561676] [2025-03-08 04:43:00,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:00,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:00,346 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-08 04:43:00,350 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 04:43:00,350 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:00,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:00,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:00,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171561676] [2025-03-08 04:43:00,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171561676] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:00,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451999072] [2025-03-08 04:43:00,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:00,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:00,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:00,408 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:00,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-08 04:43:00,432 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-08 04:43:00,442 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 04:43:00,442 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:00,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:00,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 04:43:00,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:00,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:00,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451999072] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:00,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:00,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2025-03-08 04:43:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509586622] [2025-03-08 04:43:00,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:00,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 04:43:00,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:00,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 04:43:00,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-08 04:43:00,536 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:00,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:00,601 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2025-03-08 04:43:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 04:43:00,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 26 [2025-03-08 04:43:00,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:00,602 INFO L225 Difference]: With dead ends: 43 [2025-03-08 04:43:00,602 INFO L226 Difference]: Without dead ends: 41 [2025-03-08 04:43:00,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 11 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2025-03-08 04:43:00,603 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:00,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-03-08 04:43:00,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2025-03-08 04:43:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2025-03-08 04:43:00,607 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 26 [2025-03-08 04:43:00,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:00,608 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2025-03-08 04:43:00,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:00,608 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2025-03-08 04:43:00,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-08 04:43:00,608 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:00,608 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:00,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:00,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:00,812 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:00,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash -360244911, now seen corresponding path program 9 times [2025-03-08 04:43:00,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:00,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445658616] [2025-03-08 04:43:00,812 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:00,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:00,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 6 equivalence classes. [2025-03-08 04:43:00,821 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:00,821 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 04:43:00,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:00,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:00,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445658616] [2025-03-08 04:43:00,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445658616] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:00,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464680206] [2025-03-08 04:43:00,927 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:00,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:00,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:00,929 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:00,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-08 04:43:00,956 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 6 equivalence classes. [2025-03-08 04:43:00,966 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:00,967 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 04:43:00,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:00,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 04:43:00,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:01,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:01,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464680206] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:01,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:01,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2025-03-08 04:43:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897041912] [2025-03-08 04:43:01,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:01,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-08 04:43:01,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:01,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-08 04:43:01,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2025-03-08 04:43:01,287 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:01,367 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2025-03-08 04:43:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 04:43:01,367 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 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 29 [2025-03-08 04:43:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:01,368 INFO L225 Difference]: With dead ends: 61 [2025-03-08 04:43:01,368 INFO L226 Difference]: Without dead ends: 40 [2025-03-08 04:43:01,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2025-03-08 04:43:01,368 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:01,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-03-08 04:43:01,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2025-03-08 04:43:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2025-03-08 04:43:01,374 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 29 [2025-03-08 04:43:01,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:01,375 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2025-03-08 04:43:01,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2025-03-08 04:43:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-08 04:43:01,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:01,376 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:01,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:01,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-08 04:43:01,576 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:01,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1790506289, now seen corresponding path program 7 times [2025-03-08 04:43:01,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:01,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492684742] [2025-03-08 04:43:01,577 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:01,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:01,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-08 04:43:01,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:01,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:01,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:01,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:01,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492684742] [2025-03-08 04:43:01,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492684742] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:01,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500439161] [2025-03-08 04:43:01,695 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:01,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:01,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:01,696 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:01,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-08 04:43:01,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-08 04:43:01,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:01,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:01,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:01,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 04:43:01,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:01,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:01,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500439161] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:01,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:01,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2025-03-08 04:43:01,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457060634] [2025-03-08 04:43:01,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:01,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-08 04:43:01,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:01,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-08 04:43:01,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2025-03-08 04:43:01,984 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:02,040 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2025-03-08 04:43:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 04:43:02,041 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 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 29 [2025-03-08 04:43:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:02,041 INFO L225 Difference]: With dead ends: 64 [2025-03-08 04:43:02,041 INFO L226 Difference]: Without dead ends: 43 [2025-03-08 04:43:02,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2025-03-08 04:43:02,043 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:02,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:02,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-03-08 04:43:02,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2025-03-08 04:43:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:02,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2025-03-08 04:43:02,049 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 29 [2025-03-08 04:43:02,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:02,049 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2025-03-08 04:43:02,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:02,049 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2025-03-08 04:43:02,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-08 04:43:02,049 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:02,049 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:02,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:02,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-08 04:43:02,252 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:02,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:02,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1326703279, now seen corresponding path program 8 times [2025-03-08 04:43:02,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:02,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197078276] [2025-03-08 04:43:02,252 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:02,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:02,255 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-03-08 04:43:02,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:02,257 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:02,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:02,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:02,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197078276] [2025-03-08 04:43:02,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197078276] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:02,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746503536] [2025-03-08 04:43:02,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:02,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:02,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:02,368 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:02,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-08 04:43:02,396 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-03-08 04:43:02,406 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:02,406 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:02,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:02,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 04:43:02,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:02,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:02,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746503536] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:02,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:02,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2025-03-08 04:43:02,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930390953] [2025-03-08 04:43:02,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:02,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-08 04:43:02,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:02,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-08 04:43:02,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2025-03-08 04:43:02,665 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:02,731 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2025-03-08 04:43:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 04:43:02,731 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 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 29 [2025-03-08 04:43:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:02,732 INFO L225 Difference]: With dead ends: 65 [2025-03-08 04:43:02,732 INFO L226 Difference]: Without dead ends: 44 [2025-03-08 04:43:02,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2025-03-08 04:43:02,732 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:02,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-03-08 04:43:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2025-03-08 04:43:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2025-03-08 04:43:02,736 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 29 [2025-03-08 04:43:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:02,736 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2025-03-08 04:43:02,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2025-03-08 04:43:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-08 04:43:02,736 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:02,736 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:02,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:02,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:02,937 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:02,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:02,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2119995087, now seen corresponding path program 9 times [2025-03-08 04:43:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:02,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130621] [2025-03-08 04:43:02,937 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:02,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:02,940 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 6 equivalence classes. [2025-03-08 04:43:02,945 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:02,945 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 04:43:02,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130621] [2025-03-08 04:43:03,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130621] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970154371] [2025-03-08 04:43:03,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:03,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:03,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:03,053 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:03,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-08 04:43:03,083 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 6 equivalence classes. [2025-03-08 04:43:03,106 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:03,107 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 04:43:03,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:03,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 04:43:03,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:03,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:03,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970154371] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:03,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:03,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 27 [2025-03-08 04:43:03,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102739613] [2025-03-08 04:43:03,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:03,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-08 04:43:03,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:03,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-08 04:43:03,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2025-03-08 04:43:03,352 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:03,412 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2025-03-08 04:43:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 04:43:03,412 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 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 29 [2025-03-08 04:43:03,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:03,412 INFO L225 Difference]: With dead ends: 66 [2025-03-08 04:43:03,412 INFO L226 Difference]: Without dead ends: 45 [2025-03-08 04:43:03,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2025-03-08 04:43:03,413 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:03,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-08 04:43:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2025-03-08 04:43:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2025-03-08 04:43:03,419 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 29 [2025-03-08 04:43:03,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:03,419 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2025-03-08 04:43:03,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:03,419 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2025-03-08 04:43:03,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-08 04:43:03,419 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:03,419 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:03,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:03,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:03,620 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:03,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:03,620 INFO L85 PathProgramCache]: Analyzing trace with hash 348266833, now seen corresponding path program 10 times [2025-03-08 04:43:03,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:03,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542569701] [2025-03-08 04:43:03,620 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:03,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:03,623 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-03-08 04:43:03,626 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:03,626 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:03,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:03,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:03,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542569701] [2025-03-08 04:43:03,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542569701] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:03,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659110852] [2025-03-08 04:43:03,722 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:03,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:03,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:03,723 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:03,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-08 04:43:03,750 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-03-08 04:43:03,761 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:03,761 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:03,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:03,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 04:43:03,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:03,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:03,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659110852] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:03,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:03,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-03-08 04:43:03,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751144354] [2025-03-08 04:43:03,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:03,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 04:43:03,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:03,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 04:43:03,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2025-03-08 04:43:03,988 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:04,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:04,049 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2025-03-08 04:43:04,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 04:43:04,049 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 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 29 [2025-03-08 04:43:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:04,050 INFO L225 Difference]: With dead ends: 65 [2025-03-08 04:43:04,050 INFO L226 Difference]: Without dead ends: 44 [2025-03-08 04:43:04,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 12 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2025-03-08 04:43:04,050 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:04,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:04,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-03-08 04:43:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2025-03-08 04:43:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2025-03-08 04:43:04,054 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 29 [2025-03-08 04:43:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:04,054 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2025-03-08 04:43:04,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2025-03-08 04:43:04,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-08 04:43:04,055 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:04,055 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:04,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:04,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-08 04:43:04,255 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:04,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:04,255 INFO L85 PathProgramCache]: Analyzing trace with hash 150793521, now seen corresponding path program 5 times [2025-03-08 04:43:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:04,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889921514] [2025-03-08 04:43:04,256 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:04,258 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 6 equivalence classes. [2025-03-08 04:43:04,265 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:04,265 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-08 04:43:04,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:04,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889921514] [2025-03-08 04:43:04,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889921514] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329584060] [2025-03-08 04:43:04,348 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:04,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:04,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:04,350 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:04,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-08 04:43:04,376 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 6 equivalence classes. [2025-03-08 04:43:04,386 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:04,386 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-08 04:43:04,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:04,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 04:43:04,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:04,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:04,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329584060] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:04,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:04,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-03-08 04:43:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008873610] [2025-03-08 04:43:04,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:04,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 04:43:04,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:04,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 04:43:04,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2025-03-08 04:43:04,580 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:04,638 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2025-03-08 04:43:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 04:43:04,639 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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 29 [2025-03-08 04:43:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:04,639 INFO L225 Difference]: With dead ends: 63 [2025-03-08 04:43:04,639 INFO L226 Difference]: Without dead ends: 42 [2025-03-08 04:43:04,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2025-03-08 04:43:04,640 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:04,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:04,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-03-08 04:43:04,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2025-03-08 04:43:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2025-03-08 04:43:04,652 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2025-03-08 04:43:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:04,652 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2025-03-08 04:43:04,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2025-03-08 04:43:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-08 04:43:04,652 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:04,653 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:04,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-08 04:43:04,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-08 04:43:04,857 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:04,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:04,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1164515649, now seen corresponding path program 10 times [2025-03-08 04:43:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636556224] [2025-03-08 04:43:04,859 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:04,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:04,862 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-03-08 04:43:04,865 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-08 04:43:04,865 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:04,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:04,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636556224] [2025-03-08 04:43:04,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636556224] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248548229] [2025-03-08 04:43:04,926 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:04,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:04,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:04,928 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:04,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-08 04:43:04,961 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-03-08 04:43:04,970 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-08 04:43:04,970 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:04,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:04,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 04:43:04,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:05,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:05,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248548229] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:05,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:05,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2025-03-08 04:43:05,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944876618] [2025-03-08 04:43:05,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:05,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 04:43:05,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:05,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 04:43:05,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-03-08 04:43:05,063 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:05,115 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2025-03-08 04:43:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 04:43:05,116 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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 30 [2025-03-08 04:43:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:05,116 INFO L225 Difference]: With dead ends: 48 [2025-03-08 04:43:05,116 INFO L226 Difference]: Without dead ends: 46 [2025-03-08 04:43:05,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:43:05,117 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:05,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 46 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:05,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-03-08 04:43:05,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2025-03-08 04:43:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2025-03-08 04:43:05,120 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2025-03-08 04:43:05,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:05,120 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2025-03-08 04:43:05,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:05,120 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2025-03-08 04:43:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 04:43:05,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:05,120 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:05,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:05,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-08 04:43:05,321 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:05,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:05,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1634008533, now seen corresponding path program 11 times [2025-03-08 04:43:05,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:05,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776979181] [2025-03-08 04:43:05,321 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:05,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:05,324 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 7 equivalence classes. [2025-03-08 04:43:05,329 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:05,329 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-03-08 04:43:05,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:05,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:05,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776979181] [2025-03-08 04:43:05,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776979181] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:05,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228085135] [2025-03-08 04:43:05,455 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:05,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:05,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:05,457 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:05,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-08 04:43:05,484 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 7 equivalence classes. [2025-03-08 04:43:05,497 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:05,498 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-03-08 04:43:05,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:05,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 04:43:05,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:05,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:05,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228085135] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:05,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:05,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2025-03-08 04:43:05,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971398412] [2025-03-08 04:43:05,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:05,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 04:43:05,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:05,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 04:43:05,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:05,835 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 32 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:05,915 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2025-03-08 04:43:05,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 04:43:05,916 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 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 33 [2025-03-08 04:43:05,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:05,917 INFO L225 Difference]: With dead ends: 70 [2025-03-08 04:43:05,917 INFO L226 Difference]: Without dead ends: 46 [2025-03-08 04:43:05,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:05,917 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:05,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-03-08 04:43:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2025-03-08 04:43:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-03-08 04:43:05,921 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2025-03-08 04:43:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:05,921 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-03-08 04:43:05,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-03-08 04:43:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 04:43:05,922 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:05,922 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:05,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:06,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-08 04:43:06,122 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:06,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:06,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1195643381, now seen corresponding path program 11 times [2025-03-08 04:43:06,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:06,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182036738] [2025-03-08 04:43:06,123 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:06,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:06,126 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 7 equivalence classes. [2025-03-08 04:43:06,130 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:06,131 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-03-08 04:43:06,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:06,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182036738] [2025-03-08 04:43:06,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182036738] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405973091] [2025-03-08 04:43:06,267 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:06,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:06,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:06,269 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:06,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-08 04:43:06,301 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 7 equivalence classes. [2025-03-08 04:43:06,313 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:06,314 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-03-08 04:43:06,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:06,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 04:43:06,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:06,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:06,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405973091] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:06,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:06,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 30 [2025-03-08 04:43:06,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391144629] [2025-03-08 04:43:06,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:06,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-08 04:43:06,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:06,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-08 04:43:06,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2025-03-08 04:43:06,587 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 30 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:06,637 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2025-03-08 04:43:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 04:43:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 30 states have internal predecessors, (59), 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 33 [2025-03-08 04:43:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:06,638 INFO L225 Difference]: With dead ends: 74 [2025-03-08 04:43:06,638 INFO L226 Difference]: Without dead ends: 50 [2025-03-08 04:43:06,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 14 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2025-03-08 04:43:06,639 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:06,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:06,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-03-08 04:43:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2025-03-08 04:43:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-03-08 04:43:06,643 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2025-03-08 04:43:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:06,643 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-03-08 04:43:06,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 30 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-03-08 04:43:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 04:43:06,643 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:06,643 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:06,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-08 04:43:06,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-08 04:43:06,844 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:06,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash -488765909, now seen corresponding path program 12 times [2025-03-08 04:43:06,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:06,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227990917] [2025-03-08 04:43:06,844 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:06,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:06,848 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 7 equivalence classes. [2025-03-08 04:43:06,856 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:06,857 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-08 04:43:06,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 41 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:06,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:06,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227990917] [2025-03-08 04:43:06,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227990917] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:06,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397700047] [2025-03-08 04:43:06,978 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:06,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:06,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:06,980 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:06,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-08 04:43:07,010 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 7 equivalence classes. [2025-03-08 04:43:07,022 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:07,023 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-08 04:43:07,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:07,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 04:43:07,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:07,205 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:07,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397700047] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:07,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:07,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2025-03-08 04:43:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648661428] [2025-03-08 04:43:07,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:07,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 04:43:07,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:07,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 04:43:07,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:07,297 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:07,391 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2025-03-08 04:43:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 04:43:07,391 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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 33 [2025-03-08 04:43:07,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:07,391 INFO L225 Difference]: With dead ends: 76 [2025-03-08 04:43:07,391 INFO L226 Difference]: Without dead ends: 52 [2025-03-08 04:43:07,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:43:07,392 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:07,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:07,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-03-08 04:43:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2025-03-08 04:43:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-03-08 04:43:07,397 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2025-03-08 04:43:07,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:07,398 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-03-08 04:43:07,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:07,398 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-03-08 04:43:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 04:43:07,398 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:07,398 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:07,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:07,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:07,598 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:07,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash 503867915, now seen corresponding path program 13 times [2025-03-08 04:43:07,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:07,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854379226] [2025-03-08 04:43:07,599 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:07,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 04:43:07,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:07,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:07,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:07,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:07,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854379226] [2025-03-08 04:43:07,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854379226] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:07,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459205240] [2025-03-08 04:43:07,737 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:07,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:07,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:07,738 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:07,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-08 04:43:07,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 04:43:07,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:07,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:07,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:07,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 04:43:07,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 57 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:07,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 57 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:08,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459205240] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:08,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:08,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2025-03-08 04:43:08,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849892349] [2025-03-08 04:43:08,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:08,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-08 04:43:08,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:08,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-08 04:43:08,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2025-03-08 04:43:08,058 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:08,129 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2025-03-08 04:43:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 04:43:08,130 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 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 33 [2025-03-08 04:43:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:08,130 INFO L225 Difference]: With dead ends: 77 [2025-03-08 04:43:08,130 INFO L226 Difference]: Without dead ends: 53 [2025-03-08 04:43:08,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:08,131 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:08,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:08,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-03-08 04:43:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2025-03-08 04:43:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-03-08 04:43:08,135 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2025-03-08 04:43:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:08,135 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-03-08 04:43:08,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-03-08 04:43:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 04:43:08,136 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:08,136 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:08,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-08 04:43:08,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-03-08 04:43:08,336 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:08,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:08,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1542321621, now seen corresponding path program 14 times [2025-03-08 04:43:08,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:08,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120032283] [2025-03-08 04:43:08,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:08,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:08,339 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-08 04:43:08,342 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:08,342 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:08,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 41 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:08,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120032283] [2025-03-08 04:43:08,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120032283] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516585799] [2025-03-08 04:43:08,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:08,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:08,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:08,444 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:08,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-08 04:43:08,472 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-08 04:43:08,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:08,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:08,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:08,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 04:43:08,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:08,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:08,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516585799] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:08,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:08,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 30 [2025-03-08 04:43:08,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667705494] [2025-03-08 04:43:08,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:08,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-08 04:43:08,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:08,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-08 04:43:08,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2025-03-08 04:43:08,721 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 30 states, 30 states have (on average 2.2) internal successors, (66), 30 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:08,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:08,805 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2025-03-08 04:43:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 04:43:08,806 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 30 states have internal predecessors, (66), 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 33 [2025-03-08 04:43:08,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:08,806 INFO L225 Difference]: With dead ends: 77 [2025-03-08 04:43:08,806 INFO L226 Difference]: Without dead ends: 53 [2025-03-08 04:43:08,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=764, Unknown=0, NotChecked=0, Total=930 [2025-03-08 04:43:08,807 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:08,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-03-08 04:43:08,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2025-03-08 04:43:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-03-08 04:43:08,813 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2025-03-08 04:43:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:08,813 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-03-08 04:43:08,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 30 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-03-08 04:43:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 04:43:08,814 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:08,814 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:08,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:09,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:09,014 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:09,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:09,014 INFO L85 PathProgramCache]: Analyzing trace with hash 608429579, now seen corresponding path program 15 times [2025-03-08 04:43:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:09,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796295983] [2025-03-08 04:43:09,015 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:09,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:09,018 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 7 equivalence classes. [2025-03-08 04:43:09,023 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:09,023 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-08 04:43:09,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 41 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:09,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:09,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796295983] [2025-03-08 04:43:09,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796295983] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:09,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408213174] [2025-03-08 04:43:09,134 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:09,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:09,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:09,136 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:09,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-08 04:43:09,163 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 7 equivalence classes. [2025-03-08 04:43:09,175 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:09,175 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-08 04:43:09,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:09,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 04:43:09,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:09,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:09,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408213174] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:09,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:09,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 29 [2025-03-08 04:43:09,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519255470] [2025-03-08 04:43:09,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:09,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-08 04:43:09,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:09,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-08 04:43:09,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2025-03-08 04:43:09,434 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:09,500 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2025-03-08 04:43:09,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 04:43:09,500 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 33 [2025-03-08 04:43:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:09,501 INFO L225 Difference]: With dead ends: 75 [2025-03-08 04:43:09,501 INFO L226 Difference]: Without dead ends: 51 [2025-03-08 04:43:09,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2025-03-08 04:43:09,501 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:09,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-03-08 04:43:09,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2025-03-08 04:43:09,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-03-08 04:43:09,506 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2025-03-08 04:43:09,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:09,506 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-03-08 04:43:09,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-03-08 04:43:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 04:43:09,506 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:09,506 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:09,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-08 04:43:09,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:09,707 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:09,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1786187307, now seen corresponding path program 6 times [2025-03-08 04:43:09,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:09,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817758281] [2025-03-08 04:43:09,707 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:09,712 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 7 equivalence classes. [2025-03-08 04:43:09,716 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:09,717 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-08 04:43:09,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:09,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:09,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817758281] [2025-03-08 04:43:09,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817758281] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:09,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450248478] [2025-03-08 04:43:09,836 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:09,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:09,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:09,838 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:09,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-08 04:43:09,869 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 7 equivalence classes. [2025-03-08 04:43:09,882 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 04:43:09,882 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-08 04:43:09,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:09,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 04:43:09,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:10,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:10,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450248478] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:10,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:10,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2025-03-08 04:43:10,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84631869] [2025-03-08 04:43:10,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:10,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-08 04:43:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:10,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-08 04:43:10,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2025-03-08 04:43:10,115 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:10,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:10,186 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2025-03-08 04:43:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 04:43:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 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 33 [2025-03-08 04:43:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:10,187 INFO L225 Difference]: With dead ends: 72 [2025-03-08 04:43:10,187 INFO L226 Difference]: Without dead ends: 48 [2025-03-08 04:43:10,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 43 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2025-03-08 04:43:10,187 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:10,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:10,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-03-08 04:43:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2025-03-08 04:43:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2025-03-08 04:43:10,192 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 33 [2025-03-08 04:43:10,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:10,192 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2025-03-08 04:43:10,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2025-03-08 04:43:10,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-08 04:43:10,193 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:10,193 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:10,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:10,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-03-08 04:43:10,397 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:10,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:10,397 INFO L85 PathProgramCache]: Analyzing trace with hash 503998617, now seen corresponding path program 12 times [2025-03-08 04:43:10,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:10,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582618781] [2025-03-08 04:43:10,397 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:10,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:10,406 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 7 equivalence classes. [2025-03-08 04:43:10,413 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 34 of 34 statements. [2025-03-08 04:43:10,413 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-08 04:43:10,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:10,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:10,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582618781] [2025-03-08 04:43:10,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582618781] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:10,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021851520] [2025-03-08 04:43:10,483 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:10,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:10,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:10,485 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:10,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-08 04:43:10,513 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 7 equivalence classes. [2025-03-08 04:43:10,524 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 34 of 34 statements. [2025-03-08 04:43:10,524 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-08 04:43:10,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:10,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:43:10,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:10,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:10,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021851520] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:10,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:10,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2025-03-08 04:43:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601712085] [2025-03-08 04:43:10,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:10,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 04:43:10,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:10,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 04:43:10,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2025-03-08 04:43:10,612 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:10,686 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2025-03-08 04:43:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 04:43:10,687 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 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 34 [2025-03-08 04:43:10,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:10,687 INFO L225 Difference]: With dead ends: 53 [2025-03-08 04:43:10,687 INFO L226 Difference]: Without dead ends: 51 [2025-03-08 04:43:10,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2025-03-08 04:43:10,688 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:10,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 79 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:10,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-03-08 04:43:10,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2025-03-08 04:43:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2025-03-08 04:43:10,693 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 34 [2025-03-08 04:43:10,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:10,693 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2025-03-08 04:43:10,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2025-03-08 04:43:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 04:43:10,693 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:10,693 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:10,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-08 04:43:10,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-08 04:43:10,893 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:10,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash -582026735, now seen corresponding path program 13 times [2025-03-08 04:43:10,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:10,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51358544] [2025-03-08 04:43:10,894 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:10,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:10,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 04:43:10,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:10,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:10,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:11,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51358544] [2025-03-08 04:43:11,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51358544] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568105682] [2025-03-08 04:43:11,032 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:11,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:11,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:11,034 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:11,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-08 04:43:11,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 04:43:11,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:11,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:11,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:11,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:43:11,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:11,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:11,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568105682] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:11,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:11,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2025-03-08 04:43:11,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710331612] [2025-03-08 04:43:11,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:11,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-08 04:43:11,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:11,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-08 04:43:11,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 04:43:11,429 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:11,517 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2025-03-08 04:43:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 04:43:11,518 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 states have internal predecessors, (77), 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 [2025-03-08 04:43:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:11,518 INFO L225 Difference]: With dead ends: 79 [2025-03-08 04:43:11,518 INFO L226 Difference]: Without dead ends: 52 [2025-03-08 04:43:11,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 14 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=280, Invalid=1202, Unknown=0, NotChecked=0, Total=1482 [2025-03-08 04:43:11,519 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:11,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:11,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-03-08 04:43:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2025-03-08 04:43:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2025-03-08 04:43:11,525 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 37 [2025-03-08 04:43:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:11,525 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2025-03-08 04:43:11,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:11,525 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2025-03-08 04:43:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 04:43:11,525 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:11,525 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:11,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:11,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-08 04:43:11,726 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:11,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash -480840207, now seen corresponding path program 16 times [2025-03-08 04:43:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044599922] [2025-03-08 04:43:11,726 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:11,729 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-03-08 04:43:11,732 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:11,732 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:11,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:11,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:11,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044599922] [2025-03-08 04:43:11,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044599922] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:11,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487983037] [2025-03-08 04:43:11,871 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:11,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:11,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:11,873 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:11,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-08 04:43:11,906 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-03-08 04:43:11,918 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:11,918 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:11,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:11,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:43:11,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:12,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:12,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487983037] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:12,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:12,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 34 [2025-03-08 04:43:12,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329897696] [2025-03-08 04:43:12,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:12,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-08 04:43:12,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:12,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-08 04:43:12,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 04:43:12,278 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:12,373 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2025-03-08 04:43:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 04:43:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 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 [2025-03-08 04:43:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:12,373 INFO L225 Difference]: With dead ends: 84 [2025-03-08 04:43:12,373 INFO L226 Difference]: Without dead ends: 57 [2025-03-08 04:43:12,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 43 SyntacticMatches, 16 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 04:43:12,374 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:12,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-03-08 04:43:12,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2025-03-08 04:43:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2025-03-08 04:43:12,381 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 37 [2025-03-08 04:43:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:12,381 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2025-03-08 04:43:12,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2025-03-08 04:43:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 04:43:12,382 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:12,382 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:12,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:12,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:12,583 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:12,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2140144111, now seen corresponding path program 17 times [2025-03-08 04:43:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:12,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38576837] [2025-03-08 04:43:12,583 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:12,586 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 8 equivalence classes. [2025-03-08 04:43:12,590 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:12,591 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-03-08 04:43:12,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:12,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:12,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38576837] [2025-03-08 04:43:12,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38576837] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:12,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843681042] [2025-03-08 04:43:12,722 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:12,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:12,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:12,724 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:12,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-08 04:43:12,754 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 8 equivalence classes. [2025-03-08 04:43:12,766 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:12,766 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-03-08 04:43:12,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:12,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:43:12,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:12,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:13,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843681042] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:13,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:13,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 33 [2025-03-08 04:43:13,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530615148] [2025-03-08 04:43:13,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:13,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-08 04:43:13,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:13,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-08 04:43:13,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:43:13,067 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:13,155 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2025-03-08 04:43:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 04:43:13,155 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 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 [2025-03-08 04:43:13,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:13,156 INFO L225 Difference]: With dead ends: 87 [2025-03-08 04:43:13,156 INFO L226 Difference]: Without dead ends: 60 [2025-03-08 04:43:13,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 16 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:43:13,156 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:13,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:13,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-08 04:43:13,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2025-03-08 04:43:13,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2025-03-08 04:43:13,164 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 37 [2025-03-08 04:43:13,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:13,164 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2025-03-08 04:43:13,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2025-03-08 04:43:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 04:43:13,164 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:13,164 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:13,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-03-08 04:43:13,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-08 04:43:13,365 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:13,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1778028047, now seen corresponding path program 18 times [2025-03-08 04:43:13,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:13,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346874076] [2025-03-08 04:43:13,365 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:13,368 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 8 equivalence classes. [2025-03-08 04:43:13,372 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:13,372 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-03-08 04:43:13,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 58 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:13,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346874076] [2025-03-08 04:43:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346874076] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820207181] [2025-03-08 04:43:13,511 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:13,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:13,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:13,512 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:13,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-08 04:43:13,543 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 8 equivalence classes. [2025-03-08 04:43:13,554 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:13,554 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-03-08 04:43:13,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:13,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:43:13,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 77 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:13,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 77 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:13,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820207181] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:13,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:13,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 35 [2025-03-08 04:43:13,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401089953] [2025-03-08 04:43:13,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:13,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-08 04:43:13,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:13,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-08 04:43:13,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=975, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 04:43:13,891 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:13,994 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2025-03-08 04:43:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 04:43:13,995 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 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 [2025-03-08 04:43:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:13,995 INFO L225 Difference]: With dead ends: 88 [2025-03-08 04:43:13,995 INFO L226 Difference]: Without dead ends: 61 [2025-03-08 04:43:13,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=1040, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 04:43:13,996 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:13,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-03-08 04:43:14,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2025-03-08 04:43:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2025-03-08 04:43:14,003 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 37 [2025-03-08 04:43:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:14,003 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2025-03-08 04:43:14,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2025-03-08 04:43:14,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 04:43:14,004 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:14,004 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:14,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:14,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-08 04:43:14,204 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:14,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:14,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1073610223, now seen corresponding path program 19 times [2025-03-08 04:43:14,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:14,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425169016] [2025-03-08 04:43:14,205 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:14,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:14,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 04:43:14,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:14,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:14,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 58 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:14,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:14,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425169016] [2025-03-08 04:43:14,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425169016] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:14,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398113536] [2025-03-08 04:43:14,352 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:14,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:14,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:14,354 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:14,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-03-08 04:43:14,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 04:43:14,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:14,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:14,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:14,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:43:14,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 77 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:14,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 77 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:14,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398113536] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:14,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:14,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 34 [2025-03-08 04:43:14,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162283573] [2025-03-08 04:43:14,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:14,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-08 04:43:14,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:14,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-08 04:43:14,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 04:43:14,723 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 34 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:14,814 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2025-03-08 04:43:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 04:43:14,815 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 34 states have internal predecessors, (74), 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 [2025-03-08 04:43:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:14,815 INFO L225 Difference]: With dead ends: 89 [2025-03-08 04:43:14,815 INFO L226 Difference]: Without dead ends: 62 [2025-03-08 04:43:14,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 14 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 04:43:14,816 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:14,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-03-08 04:43:14,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2025-03-08 04:43:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2025-03-08 04:43:14,823 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 37 [2025-03-08 04:43:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:14,823 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2025-03-08 04:43:14,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 34 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2025-03-08 04:43:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 04:43:14,824 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:14,824 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:14,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:15,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-08 04:43:15,024 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:15,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:15,024 INFO L85 PathProgramCache]: Analyzing trace with hash -635245071, now seen corresponding path program 20 times [2025-03-08 04:43:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:15,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942454719] [2025-03-08 04:43:15,024 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:15,027 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-03-08 04:43:15,030 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:15,030 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:15,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 58 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:15,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942454719] [2025-03-08 04:43:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942454719] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836830577] [2025-03-08 04:43:15,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:15,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:15,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:15,149 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:15,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-03-08 04:43:15,180 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-03-08 04:43:15,190 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:15,190 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:15,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:15,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:43:15,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:15,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:15,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836830577] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:15,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:15,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 33 [2025-03-08 04:43:15,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971243680] [2025-03-08 04:43:15,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:15,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-08 04:43:15,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:15,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-08 04:43:15,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:43:15,528 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:15,646 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2025-03-08 04:43:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 04:43:15,646 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 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 [2025-03-08 04:43:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:15,647 INFO L225 Difference]: With dead ends: 88 [2025-03-08 04:43:15,647 INFO L226 Difference]: Without dead ends: 61 [2025-03-08 04:43:15,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 04:43:15,648 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:15,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:15,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-03-08 04:43:15,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2025-03-08 04:43:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2025-03-08 04:43:15,656 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 37 [2025-03-08 04:43:15,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:15,656 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2025-03-08 04:43:15,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2025-03-08 04:43:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 04:43:15,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:15,656 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:15,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-03-08 04:43:15,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-03-08 04:43:15,857 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:15,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash 71632401, now seen corresponding path program 21 times [2025-03-08 04:43:15,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:15,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528811034] [2025-03-08 04:43:15,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:15,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:15,861 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 8 equivalence classes. [2025-03-08 04:43:15,865 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:15,865 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-03-08 04:43:15,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 58 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:16,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528811034] [2025-03-08 04:43:16,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528811034] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435623504] [2025-03-08 04:43:16,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:16,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:16,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:16,006 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:16,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-03-08 04:43:16,044 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 8 equivalence classes. [2025-03-08 04:43:16,059 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:16,059 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-03-08 04:43:16,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:16,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:43:16,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:16,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:16,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435623504] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:16,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:16,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 32 [2025-03-08 04:43:16,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249579061] [2025-03-08 04:43:16,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:16,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 04:43:16,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:16,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 04:43:16,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:16,408 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 32 states, 32 states have (on average 2.25) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:16,487 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2025-03-08 04:43:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 04:43:16,487 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.25) internal successors, (72), 32 states have internal predecessors, (72), 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 [2025-03-08 04:43:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:16,488 INFO L225 Difference]: With dead ends: 85 [2025-03-08 04:43:16,488 INFO L226 Difference]: Without dead ends: 58 [2025-03-08 04:43:16,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:43:16,488 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:16,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-08 04:43:16,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2025-03-08 04:43:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2025-03-08 04:43:16,497 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 37 [2025-03-08 04:43:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:16,497 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2025-03-08 04:43:16,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.25) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2025-03-08 04:43:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 04:43:16,497 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:16,497 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:16,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:16,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:16,698 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:16,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:16,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1064266225, now seen corresponding path program 7 times [2025-03-08 04:43:16,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:16,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271946085] [2025-03-08 04:43:16,698 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:16,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:16,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 04:43:16,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:16,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:16,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271946085] [2025-03-08 04:43:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271946085] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251068612] [2025-03-08 04:43:16,844 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:16,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:16,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:16,846 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:16,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-03-08 04:43:16,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 04:43:16,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 04:43:16,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:16,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:16,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:43:16,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:17,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:17,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251068612] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:17,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:17,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 31 [2025-03-08 04:43:17,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880076352] [2025-03-08 04:43:17,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:17,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-08 04:43:17,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:17,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-08 04:43:17,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2025-03-08 04:43:17,206 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:17,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:17,275 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2025-03-08 04:43:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 04:43:17,275 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 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 [2025-03-08 04:43:17,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:17,275 INFO L225 Difference]: With dead ends: 81 [2025-03-08 04:43:17,275 INFO L226 Difference]: Without dead ends: 54 [2025-03-08 04:43:17,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:17,276 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:17,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:17,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-03-08 04:43:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2025-03-08 04:43:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2025-03-08 04:43:17,285 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 37 [2025-03-08 04:43:17,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:17,286 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2025-03-08 04:43:17,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2025-03-08 04:43:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 04:43:17,286 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:17,287 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:17,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:17,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:17,487 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:17,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:17,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1331070593, now seen corresponding path program 14 times [2025-03-08 04:43:17,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:17,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029659226] [2025-03-08 04:43:17,487 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:17,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:17,491 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-08 04:43:17,493 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 04:43:17,493 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:17,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 28 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:17,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:17,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029659226] [2025-03-08 04:43:17,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029659226] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:17,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728670568] [2025-03-08 04:43:17,564 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:17,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:17,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:17,567 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:17,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-03-08 04:43:17,601 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-08 04:43:17,612 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 04:43:17,612 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:17,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:17,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 04:43:17,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:17,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:17,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728670568] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:17,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:17,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2025-03-08 04:43:17,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648740649] [2025-03-08 04:43:17,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:17,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 04:43:17,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:17,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 04:43:17,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2025-03-08 04:43:17,727 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:17,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:17,848 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2025-03-08 04:43:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 04:43:17,848 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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 38 [2025-03-08 04:43:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:17,848 INFO L225 Difference]: With dead ends: 58 [2025-03-08 04:43:17,848 INFO L226 Difference]: Without dead ends: 56 [2025-03-08 04:43:17,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 64 SyntacticMatches, 17 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2025-03-08 04:43:17,849 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:17,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 94 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-08 04:43:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2025-03-08 04:43:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2025-03-08 04:43:17,857 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 38 [2025-03-08 04:43:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:17,857 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2025-03-08 04:43:17,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2025-03-08 04:43:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-08 04:43:17,857 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:17,857 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:17,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:18,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-03-08 04:43:18,058 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:18,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:18,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1509848939, now seen corresponding path program 15 times [2025-03-08 04:43:18,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:18,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239028447] [2025-03-08 04:43:18,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:18,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:18,061 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 9 equivalence classes. [2025-03-08 04:43:18,069 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:18,069 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-03-08 04:43:18,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:18,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239028447] [2025-03-08 04:43:18,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239028447] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481016087] [2025-03-08 04:43:18,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:18,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:18,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:18,250 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:18,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-03-08 04:43:18,289 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 9 equivalence classes. [2025-03-08 04:43:18,305 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:18,305 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-03-08 04:43:18,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:18,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 04:43:18,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:18,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:18,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481016087] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:18,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:18,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 42 [2025-03-08 04:43:18,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165159651] [2025-03-08 04:43:18,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:18,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-08 04:43:18,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:18,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-08 04:43:18,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1387, Unknown=0, NotChecked=0, Total=1722 [2025-03-08 04:43:18,760 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 42 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:18,858 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2025-03-08 04:43:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:43:18,858 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 42 states have internal predecessors, (85), 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 41 [2025-03-08 04:43:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:18,858 INFO L225 Difference]: With dead ends: 88 [2025-03-08 04:43:18,858 INFO L226 Difference]: Without dead ends: 58 [2025-03-08 04:43:18,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 45 SyntacticMatches, 16 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=1466, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:43:18,859 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:18,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-08 04:43:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2025-03-08 04:43:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2025-03-08 04:43:18,870 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2025-03-08 04:43:18,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:18,870 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2025-03-08 04:43:18,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 42 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2025-03-08 04:43:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-08 04:43:18,870 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:18,870 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:18,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2025-03-08 04:43:19,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-03-08 04:43:19,071 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:19,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:19,071 INFO L85 PathProgramCache]: Analyzing trace with hash -505052341, now seen corresponding path program 22 times [2025-03-08 04:43:19,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:19,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462652254] [2025-03-08 04:43:19,071 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:19,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:19,074 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-03-08 04:43:19,079 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:19,079 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:19,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:19,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462652254] [2025-03-08 04:43:19,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462652254] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42422740] [2025-03-08 04:43:19,218 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:19,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:19,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:19,220 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:19,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-03-08 04:43:19,254 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-03-08 04:43:19,265 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:19,265 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:19,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:19,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 04:43:19,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:19,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:19,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42422740] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:19,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:19,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 38 [2025-03-08 04:43:19,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87534598] [2025-03-08 04:43:19,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:19,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-08 04:43:19,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:19,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-08 04:43:19,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1123, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 04:43:19,630 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 38 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 38 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:19,716 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2025-03-08 04:43:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:43:19,716 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 38 states have internal predecessors, (75), 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 41 [2025-03-08 04:43:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:19,717 INFO L225 Difference]: With dead ends: 94 [2025-03-08 04:43:19,717 INFO L226 Difference]: Without dead ends: 64 [2025-03-08 04:43:19,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 47 SyntacticMatches, 18 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=1123, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 04:43:19,717 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:19,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-03-08 04:43:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2025-03-08 04:43:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2025-03-08 04:43:19,729 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2025-03-08 04:43:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:19,729 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2025-03-08 04:43:19,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 38 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2025-03-08 04:43:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-08 04:43:19,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:19,729 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:19,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:19,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-03-08 04:43:19,929 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:19,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:19,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1124238485, now seen corresponding path program 23 times [2025-03-08 04:43:19,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:19,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681752905] [2025-03-08 04:43:19,930 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:19,933 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 9 equivalence classes. [2025-03-08 04:43:19,937 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:19,937 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-08 04:43:19,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:20,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:20,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681752905] [2025-03-08 04:43:20,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681752905] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:20,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194963956] [2025-03-08 04:43:20,084 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:20,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:20,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:20,086 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:20,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-03-08 04:43:20,121 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 9 equivalence classes. [2025-03-08 04:43:20,135 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:20,135 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-08 04:43:20,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:20,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 04:43:20,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:20,375 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:20,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194963956] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:20,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:20,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 37 [2025-03-08 04:43:20,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84491901] [2025-03-08 04:43:20,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:20,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 04:43:20,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:20,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 04:43:20,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:43:20,487 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:20,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:20,578 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2025-03-08 04:43:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:43:20,579 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 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 41 [2025-03-08 04:43:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:20,579 INFO L225 Difference]: With dead ends: 98 [2025-03-08 04:43:20,579 INFO L226 Difference]: Without dead ends: 68 [2025-03-08 04:43:20,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 48 SyntacticMatches, 18 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:43:20,580 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:20,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-03-08 04:43:20,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2025-03-08 04:43:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2025-03-08 04:43:20,591 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2025-03-08 04:43:20,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:20,591 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2025-03-08 04:43:20,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2025-03-08 04:43:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-08 04:43:20,592 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:20,592 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:20,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2025-03-08 04:43:20,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:20,792 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:20,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1626734411, now seen corresponding path program 24 times [2025-03-08 04:43:20,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:20,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405477671] [2025-03-08 04:43:20,792 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:20,795 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 9 equivalence classes. [2025-03-08 04:43:20,800 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:20,800 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-08 04:43:20,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 78 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:20,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405477671] [2025-03-08 04:43:20,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405477671] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641316923] [2025-03-08 04:43:20,939 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:20,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:20,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:20,941 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:20,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-03-08 04:43:20,977 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 9 equivalence classes. [2025-03-08 04:43:20,993 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:20,993 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-08 04:43:20,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:20,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 04:43:20,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:21,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:21,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641316923] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:21,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:21,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 39 [2025-03-08 04:43:21,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255466510] [2025-03-08 04:43:21,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:21,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-03-08 04:43:21,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:21,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-03-08 04:43:21,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1216, Unknown=0, NotChecked=0, Total=1482 [2025-03-08 04:43:21,364 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 39 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:21,490 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2025-03-08 04:43:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:43:21,490 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 39 states have internal predecessors, (83), 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 41 [2025-03-08 04:43:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:21,491 INFO L225 Difference]: With dead ends: 100 [2025-03-08 04:43:21,491 INFO L226 Difference]: Without dead ends: 70 [2025-03-08 04:43:21,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 48 SyntacticMatches, 16 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=1289, Unknown=0, NotChecked=0, Total=1560 [2025-03-08 04:43:21,491 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:21,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:21,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-03-08 04:43:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 51. [2025-03-08 04:43:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2025-03-08 04:43:21,503 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2025-03-08 04:43:21,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:21,503 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2025-03-08 04:43:21,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 39 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,503 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2025-03-08 04:43:21,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-08 04:43:21,504 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:21,504 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:21,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2025-03-08 04:43:21,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-03-08 04:43:21,704 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:21,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash 468549483, now seen corresponding path program 25 times [2025-03-08 04:43:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:21,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938123781] [2025-03-08 04:43:21,705 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:21,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:21,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-08 04:43:21,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:21,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:21,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 78 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:21,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938123781] [2025-03-08 04:43:21,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938123781] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842631598] [2025-03-08 04:43:21,847 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:21,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:21,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:21,849 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:21,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-03-08 04:43:21,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-08 04:43:21,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:21,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:21,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:21,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 04:43:21,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 100 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:22,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 100 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:22,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842631598] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:22,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:22,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 38 [2025-03-08 04:43:22,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328303696] [2025-03-08 04:43:22,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:22,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-08 04:43:22,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:22,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-08 04:43:22,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1155, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 04:43:22,279 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:22,400 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2025-03-08 04:43:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:43:22,400 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 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 41 [2025-03-08 04:43:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:22,400 INFO L225 Difference]: With dead ends: 101 [2025-03-08 04:43:22,400 INFO L226 Difference]: Without dead ends: 71 [2025-03-08 04:43:22,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 49 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=256, Invalid=1226, Unknown=0, NotChecked=0, Total=1482 [2025-03-08 04:43:22,401 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:22,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-03-08 04:43:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 51. [2025-03-08 04:43:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2025-03-08 04:43:22,413 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2025-03-08 04:43:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:22,413 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2025-03-08 04:43:22,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2025-03-08 04:43:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-08 04:43:22,413 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:22,414 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:22,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:22,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-03-08 04:43:22,614 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:22,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:22,614 INFO L85 PathProgramCache]: Analyzing trace with hash 569736011, now seen corresponding path program 26 times [2025-03-08 04:43:22,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:22,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666453615] [2025-03-08 04:43:22,614 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:22,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:22,617 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-03-08 04:43:22,620 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:22,620 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:22,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 78 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:22,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:22,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666453615] [2025-03-08 04:43:22,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666453615] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:22,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256807346] [2025-03-08 04:43:22,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:22,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:22,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:22,764 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:22,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-03-08 04:43:22,801 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-03-08 04:43:22,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:22,812 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:22,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:22,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 04:43:22,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:23,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256807346] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:23,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:23,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 37 [2025-03-08 04:43:23,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479180425] [2025-03-08 04:43:23,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:23,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 04:43:23,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:23,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 04:43:23,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:43:23,159 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:23,282 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2025-03-08 04:43:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:43:23,283 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 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 41 [2025-03-08 04:43:23,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:23,283 INFO L225 Difference]: With dead ends: 101 [2025-03-08 04:43:23,283 INFO L226 Difference]: Without dead ends: 71 [2025-03-08 04:43:23,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 04:43:23,284 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:23,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:23,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-03-08 04:43:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 51. [2025-03-08 04:43:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2025-03-08 04:43:23,296 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2025-03-08 04:43:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:23,296 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2025-03-08 04:43:23,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2025-03-08 04:43:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-08 04:43:23,296 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:23,296 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:23,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2025-03-08 04:43:23,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-03-08 04:43:23,497 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:23,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:23,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1089567893, now seen corresponding path program 27 times [2025-03-08 04:43:23,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:23,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892492914] [2025-03-08 04:43:23,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:23,503 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 9 equivalence classes. [2025-03-08 04:43:23,507 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:23,507 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-03-08 04:43:23,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 78 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:23,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:23,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892492914] [2025-03-08 04:43:23,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892492914] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:23,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834812491] [2025-03-08 04:43:23,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:23,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:23,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:23,647 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:23,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-03-08 04:43:23,685 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 9 equivalence classes. [2025-03-08 04:43:23,698 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:23,698 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-03-08 04:43:23,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:23,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 04:43:23,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:23,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:24,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834812491] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:24,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:24,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 36 [2025-03-08 04:43:24,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488637160] [2025-03-08 04:43:24,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:24,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-08 04:43:24,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:24,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-08 04:43:24,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 04:43:24,030 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:24,136 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2025-03-08 04:43:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:43:24,137 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 36 states have internal predecessors, (80), 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 41 [2025-03-08 04:43:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:24,137 INFO L225 Difference]: With dead ends: 99 [2025-03-08 04:43:24,137 INFO L226 Difference]: Without dead ends: 69 [2025-03-08 04:43:24,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=1094, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:43:24,137 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:24,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-03-08 04:43:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2025-03-08 04:43:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2025-03-08 04:43:24,150 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2025-03-08 04:43:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:24,150 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2025-03-08 04:43:24,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2025-03-08 04:43:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-08 04:43:24,151 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:24,151 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:24,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2025-03-08 04:43:24,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2025-03-08 04:43:24,351 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:24,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash -727451829, now seen corresponding path program 28 times [2025-03-08 04:43:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:24,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631968814] [2025-03-08 04:43:24,352 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:24,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:24,355 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-03-08 04:43:24,358 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:24,358 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:24,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:24,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:24,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631968814] [2025-03-08 04:43:24,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631968814] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:24,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012005967] [2025-03-08 04:43:24,499 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:24,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:24,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:24,501 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:24,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2025-03-08 04:43:24,538 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-03-08 04:43:24,549 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:24,549 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:24,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:24,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 04:43:24,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:24,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012005967] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:24,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2025-03-08 04:43:24,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26735497] [2025-03-08 04:43:24,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:24,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 04:43:24,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:24,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 04:43:24,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:24,866 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:24,965 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2025-03-08 04:43:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:43:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 states have internal predecessors, (69), 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 41 [2025-03-08 04:43:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:24,966 INFO L225 Difference]: With dead ends: 95 [2025-03-08 04:43:24,966 INFO L226 Difference]: Without dead ends: 65 [2025-03-08 04:43:24,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 53 SyntacticMatches, 18 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:24,966 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:24,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:24,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-03-08 04:43:24,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2025-03-08 04:43:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2025-03-08 04:43:24,979 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2025-03-08 04:43:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:24,979 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2025-03-08 04:43:24,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,979 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2025-03-08 04:43:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-08 04:43:24,979 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:24,979 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:24,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2025-03-08 04:43:25,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:25,180 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:25,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:25,180 INFO L85 PathProgramCache]: Analyzing trace with hash -23034005, now seen corresponding path program 8 times [2025-03-08 04:43:25,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:25,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854627852] [2025-03-08 04:43:25,180 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:25,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:25,184 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-03-08 04:43:25,186 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:25,186 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:25,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:25,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:25,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854627852] [2025-03-08 04:43:25,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854627852] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:25,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134220304] [2025-03-08 04:43:25,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:25,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:25,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:25,333 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:25,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2025-03-08 04:43:25,372 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-03-08 04:43:25,383 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 04:43:25,383 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:25,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:25,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 04:43:25,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:25,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:25,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134220304] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:25,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:25,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 34 [2025-03-08 04:43:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020024859] [2025-03-08 04:43:25,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:25,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-08 04:43:25,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:25,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-08 04:43:25,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 04:43:25,726 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:25,825 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2025-03-08 04:43:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:43:25,826 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 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 41 [2025-03-08 04:43:25,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:25,826 INFO L225 Difference]: With dead ends: 90 [2025-03-08 04:43:25,826 INFO L226 Difference]: Without dead ends: 60 [2025-03-08 04:43:25,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 53 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=954, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 04:43:25,827 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:25,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-08 04:43:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2025-03-08 04:43:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 51 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2025-03-08 04:43:25,839 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 41 [2025-03-08 04:43:25,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:25,840 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2025-03-08 04:43:25,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2025-03-08 04:43:25,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-08 04:43:25,840 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:25,840 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:25,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2025-03-08 04:43:26,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2025-03-08 04:43:26,040 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:26,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash -200306727, now seen corresponding path program 16 times [2025-03-08 04:43:26,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170572700] [2025-03-08 04:43:26,041 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:26,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:26,044 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-03-08 04:43:26,047 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 04:43:26,047 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:26,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:26,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170572700] [2025-03-08 04:43:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170572700] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509740057] [2025-03-08 04:43:26,127 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:26,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:26,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:26,128 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:26,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2025-03-08 04:43:26,166 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-03-08 04:43:26,178 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 04:43:26,178 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:26,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:26,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:26,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:26,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:26,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509740057] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:26,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:26,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2025-03-08 04:43:26,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946261679] [2025-03-08 04:43:26,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:26,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 04:43:26,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:26,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 04:43:26,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-08 04:43:26,324 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:26,435 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2025-03-08 04:43:26,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:43:26,435 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 42 [2025-03-08 04:43:26,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:26,436 INFO L225 Difference]: With dead ends: 63 [2025-03-08 04:43:26,436 INFO L226 Difference]: Without dead ends: 61 [2025-03-08 04:43:26,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 73 SyntacticMatches, 18 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2025-03-08 04:43:26,436 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:26,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 71 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-03-08 04:43:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2025-03-08 04:43:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:26,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2025-03-08 04:43:26,450 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 42 [2025-03-08 04:43:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:26,451 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2025-03-08 04:43:26,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2025-03-08 04:43:26,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:26,451 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:26,452 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:26,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2025-03-08 04:43:26,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:26,652 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:26,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:26,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1627288879, now seen corresponding path program 17 times [2025-03-08 04:43:26,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:26,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022862739] [2025-03-08 04:43:26,653 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:26,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:26,656 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:26,660 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:26,660 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-08 04:43:26,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:26,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:26,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022862739] [2025-03-08 04:43:26,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022862739] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:26,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691881056] [2025-03-08 04:43:26,822 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:26,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:26,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:26,824 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:26,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2025-03-08 04:43:26,863 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:26,878 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:26,878 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-08 04:43:26,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:26,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:26,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:27,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:27,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691881056] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:27,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:27,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2025-03-08 04:43:27,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994231956] [2025-03-08 04:43:27,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:27,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-08 04:43:27,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:27,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-08 04:43:27,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=1516, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 04:43:27,326 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 44 states, 44 states have (on average 2.0) internal successors, (88), 44 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:27,455 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2025-03-08 04:43:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 04:43:27,456 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0) internal successors, (88), 44 states have internal predecessors, (88), 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 45 [2025-03-08 04:43:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:27,456 INFO L225 Difference]: With dead ends: 97 [2025-03-08 04:43:27,456 INFO L226 Difference]: Without dead ends: 64 [2025-03-08 04:43:27,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 49 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1516, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 04:43:27,457 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:27,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:27,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-03-08 04:43:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2025-03-08 04:43:27,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:27,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2025-03-08 04:43:27,473 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 45 [2025-03-08 04:43:27,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:27,473 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2025-03-08 04:43:27,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.0) internal successors, (88), 44 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:27,473 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2025-03-08 04:43:27,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:27,473 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:27,473 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:27,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2025-03-08 04:43:27,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:27,675 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:27,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2101369167, now seen corresponding path program 29 times [2025-03-08 04:43:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540154756] [2025-03-08 04:43:27,676 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:27,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:27,680 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:27,684 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:27,685 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-08 04:43:27,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 126 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:27,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540154756] [2025-03-08 04:43:27,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540154756] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793745823] [2025-03-08 04:43:27,849 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:27,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:27,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:27,851 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:27,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2025-03-08 04:43:27,891 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:27,906 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:27,906 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-08 04:43:27,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:27,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:27,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 126 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:28,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 126 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793745823] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:28,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:28,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 42 [2025-03-08 04:43:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550827965] [2025-03-08 04:43:28,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:28,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-08 04:43:28,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:28,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-08 04:43:28,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1378, Unknown=0, NotChecked=0, Total=1722 [2025-03-08 04:43:28,329 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 42 states, 42 states have (on average 1.9761904761904763) internal successors, (83), 42 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:28,447 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2025-03-08 04:43:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 04:43:28,448 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.9761904761904763) internal successors, (83), 42 states have internal predecessors, (83), 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 45 [2025-03-08 04:43:28,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:28,448 INFO L225 Difference]: With dead ends: 104 [2025-03-08 04:43:28,448 INFO L226 Difference]: Without dead ends: 71 [2025-03-08 04:43:28,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 51 SyntacticMatches, 20 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=344, Invalid=1378, Unknown=0, NotChecked=0, Total=1722 [2025-03-08 04:43:28,448 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:28,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:28,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-03-08 04:43:28,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 56. [2025-03-08 04:43:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:28,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2025-03-08 04:43:28,466 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 45 [2025-03-08 04:43:28,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:28,466 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2025-03-08 04:43:28,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.9761904761904763) internal successors, (83), 42 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2025-03-08 04:43:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:28,466 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:28,466 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:28,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2025-03-08 04:43:28,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:28,667 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:28,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:28,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1562472751, now seen corresponding path program 30 times [2025-03-08 04:43:28,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:28,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429963816] [2025-03-08 04:43:28,667 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:28,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:28,670 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:28,676 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:28,676 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-03-08 04:43:28,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 101 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:28,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429963816] [2025-03-08 04:43:28,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429963816] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047486935] [2025-03-08 04:43:28,858 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:28,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:28,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:28,860 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:28,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2025-03-08 04:43:28,904 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:28,922 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:28,922 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-03-08 04:43:28,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:28,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:28,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:29,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:29,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047486935] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:29,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:29,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2025-03-08 04:43:29,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760554235] [2025-03-08 04:43:29,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:29,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-08 04:43:29,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:29,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-08 04:43:29,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1547, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 04:43:29,381 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 44 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:29,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:29,556 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2025-03-08 04:43:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 04:43:29,556 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 44 states have internal predecessors, (92), 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 45 [2025-03-08 04:43:29,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:29,557 INFO L225 Difference]: With dead ends: 109 [2025-03-08 04:43:29,557 INFO L226 Difference]: Without dead ends: 76 [2025-03-08 04:43:29,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 51 SyntacticMatches, 18 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=350, Invalid=1630, Unknown=0, NotChecked=0, Total=1980 [2025-03-08 04:43:29,557 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:29,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:29,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-03-08 04:43:29,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 56. [2025-03-08 04:43:29,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:29,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2025-03-08 04:43:29,575 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 45 [2025-03-08 04:43:29,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:29,575 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2025-03-08 04:43:29,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 44 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:29,576 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2025-03-08 04:43:29,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:29,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:29,576 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:29,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:29,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:29,777 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:29,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash -852352335, now seen corresponding path program 31 times [2025-03-08 04:43:29,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:29,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433217182] [2025-03-08 04:43:29,778 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:29,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:29,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-08 04:43:29,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:29,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:29,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 101 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:29,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:29,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433217182] [2025-03-08 04:43:29,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433217182] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:29,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846259897] [2025-03-08 04:43:29,948 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:29,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:29,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:29,949 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:29,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2025-03-08 04:43:29,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-08 04:43:30,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:30,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:30,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:30,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:30,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 126 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:30,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 126 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:30,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846259897] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:30,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:30,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 43 [2025-03-08 04:43:30,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147400753] [2025-03-08 04:43:30,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:30,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-08 04:43:30,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:30,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-08 04:43:30,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1483, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:43:30,434 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 43 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:30,590 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2025-03-08 04:43:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 04:43:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 43 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-03-08 04:43:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:30,591 INFO L225 Difference]: With dead ends: 112 [2025-03-08 04:43:30,591 INFO L226 Difference]: Without dead ends: 79 [2025-03-08 04:43:30,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 52 SyntacticMatches, 18 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=1564, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 04:43:30,592 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:30,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:30,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-03-08 04:43:30,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 56. [2025-03-08 04:43:30,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2025-03-08 04:43:30,610 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 45 [2025-03-08 04:43:30,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:30,610 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2025-03-08 04:43:30,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 43 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:30,610 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2025-03-08 04:43:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:30,610 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:30,610 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:30,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:30,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-03-08 04:43:30,811 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:30,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1110217425, now seen corresponding path program 32 times [2025-03-08 04:43:30,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:30,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468238690] [2025-03-08 04:43:30,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:30,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:30,814 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-08 04:43:30,817 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:30,817 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:30,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 101 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:30,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468238690] [2025-03-08 04:43:30,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468238690] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769904843] [2025-03-08 04:43:30,977 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:30,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:30,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:30,979 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:30,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2025-03-08 04:43:31,020 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-08 04:43:31,034 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:31,034 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:31,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:31,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:31,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 126 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:31,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 126 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:31,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769904843] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:31,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:31,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 42 [2025-03-08 04:43:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999530451] [2025-03-08 04:43:31,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:31,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-08 04:43:31,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:31,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-08 04:43:31,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1417, Unknown=0, NotChecked=0, Total=1722 [2025-03-08 04:43:31,455 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 42 states, 42 states have (on average 2.142857142857143) internal successors, (90), 42 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:31,610 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2025-03-08 04:43:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 04:43:31,611 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.142857142857143) internal successors, (90), 42 states have internal predecessors, (90), 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 45 [2025-03-08 04:43:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:31,611 INFO L225 Difference]: With dead ends: 113 [2025-03-08 04:43:31,611 INFO L226 Difference]: Without dead ends: 80 [2025-03-08 04:43:31,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 53 SyntacticMatches, 18 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=310, Invalid=1496, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:43:31,612 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:31,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-08 04:43:31,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 56. [2025-03-08 04:43:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2025-03-08 04:43:31,630 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 45 [2025-03-08 04:43:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:31,630 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2025-03-08 04:43:31,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.142857142857143) internal successors, (90), 42 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2025-03-08 04:43:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:31,631 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:31,631 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:31,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2025-03-08 04:43:31,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-03-08 04:43:31,831 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:31,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:31,831 INFO L85 PathProgramCache]: Analyzing trace with hash -904683855, now seen corresponding path program 33 times [2025-03-08 04:43:31,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:31,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122729135] [2025-03-08 04:43:31,832 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:31,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:31,835 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:31,839 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:31,839 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-03-08 04:43:31,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 101 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:31,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122729135] [2025-03-08 04:43:31,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122729135] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301317793] [2025-03-08 04:43:31,999 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:31,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:31,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:32,001 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:32,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2025-03-08 04:43:32,043 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:32,058 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:32,058 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-03-08 04:43:32,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:32,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:32,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 126 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:32,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 126 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:32,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301317793] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:32,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:32,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 41 [2025-03-08 04:43:32,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77589026] [2025-03-08 04:43:32,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:32,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-08 04:43:32,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:32,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-08 04:43:32,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1349, Unknown=0, NotChecked=0, Total=1640 [2025-03-08 04:43:32,472 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:32,638 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2025-03-08 04:43:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 04:43:32,639 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 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 45 [2025-03-08 04:43:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:32,639 INFO L225 Difference]: With dead ends: 114 [2025-03-08 04:43:32,639 INFO L226 Difference]: Without dead ends: 81 [2025-03-08 04:43:32,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=296, Invalid=1426, Unknown=0, NotChecked=0, Total=1722 [2025-03-08 04:43:32,640 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:32,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-03-08 04:43:32,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 56. [2025-03-08 04:43:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2025-03-08 04:43:32,659 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 45 [2025-03-08 04:43:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:32,659 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2025-03-08 04:43:32,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2025-03-08 04:43:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:32,659 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:32,659 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:32,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2025-03-08 04:43:32,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-03-08 04:43:32,860 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:32,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1523869999, now seen corresponding path program 34 times [2025-03-08 04:43:32,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:32,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154288348] [2025-03-08 04:43:32,860 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:32,863 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-08 04:43:32,866 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:32,866 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:32,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 126 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:33,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:33,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154288348] [2025-03-08 04:43:33,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154288348] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:33,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553189965] [2025-03-08 04:43:33,026 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:33,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:33,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:33,027 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:33,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2025-03-08 04:43:33,077 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-08 04:43:33,089 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:33,089 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:33,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:33,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:33,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 126 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:33,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 126 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:33,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553189965] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:33,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:33,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 37 [2025-03-08 04:43:33,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715870707] [2025-03-08 04:43:33,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:33,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 04:43:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:33,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 04:43:33,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:43:33,460 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:33,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:33,602 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2025-03-08 04:43:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 04:43:33,603 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 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 45 [2025-03-08 04:43:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:33,603 INFO L225 Difference]: With dead ends: 113 [2025-03-08 04:43:33,603 INFO L226 Difference]: Without dead ends: 80 [2025-03-08 04:43:33,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 56 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:43:33,604 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:33,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-08 04:43:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 56. [2025-03-08 04:43:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2025-03-08 04:43:33,623 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 45 [2025-03-08 04:43:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:33,623 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2025-03-08 04:43:33,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2025-03-08 04:43:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:33,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:33,623 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:33,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2025-03-08 04:43:33,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:33,824 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:33,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:33,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1227102897, now seen corresponding path program 35 times [2025-03-08 04:43:33,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:33,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032372820] [2025-03-08 04:43:33,824 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:33,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:33,827 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:33,832 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:33,832 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-08 04:43:33,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:33,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:33,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032372820] [2025-03-08 04:43:33,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032372820] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:33,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470142105] [2025-03-08 04:43:33,991 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:33,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:33,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:33,993 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:33,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2025-03-08 04:43:34,037 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:34,052 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:34,052 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-08 04:43:34,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:34,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:34,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:34,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470142105] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:34,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:34,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 36 [2025-03-08 04:43:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349934580] [2025-03-08 04:43:34,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:34,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-08 04:43:34,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:34,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-08 04:43:34,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 04:43:34,417 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:34,548 INFO L93 Difference]: Finished difference Result 110 states and 122 transitions. [2025-03-08 04:43:34,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 04:43:34,548 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 states have internal predecessors, (77), 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 45 [2025-03-08 04:43:34,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:34,549 INFO L225 Difference]: With dead ends: 110 [2025-03-08 04:43:34,549 INFO L226 Difference]: Without dead ends: 77 [2025-03-08 04:43:34,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 57 SyntacticMatches, 20 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 04:43:34,549 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:34,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:34,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-03-08 04:43:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2025-03-08 04:43:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2025-03-08 04:43:34,569 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 45 [2025-03-08 04:43:34,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:34,569 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2025-03-08 04:43:34,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2025-03-08 04:43:34,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:34,569 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:34,569 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:34,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:34,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:34,770 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:34,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:34,770 INFO L85 PathProgramCache]: Analyzing trace with hash 68917969, now seen corresponding path program 36 times [2025-03-08 04:43:34,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:34,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241689338] [2025-03-08 04:43:34,770 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:34,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:34,773 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:34,778 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:34,778 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-03-08 04:43:34,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 101 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:34,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241689338] [2025-03-08 04:43:34,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241689338] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58305128] [2025-03-08 04:43:34,981 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:34,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:34,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:34,984 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:34,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2025-03-08 04:43:35,033 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:35,048 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:35,048 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-03-08 04:43:35,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:35,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:35,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 126 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:35,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 126 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:35,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58305128] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:35,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:35,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 38 [2025-03-08 04:43:35,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187637025] [2025-03-08 04:43:35,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:35,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-08 04:43:35,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:35,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-08 04:43:35,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1133, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 04:43:35,419 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:35,553 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2025-03-08 04:43:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 04:43:35,553 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 38 states have internal predecessors, (86), 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 45 [2025-03-08 04:43:35,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:35,553 INFO L225 Difference]: With dead ends: 105 [2025-03-08 04:43:35,553 INFO L226 Difference]: Without dead ends: 72 [2025-03-08 04:43:35,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 18 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2025-03-08 04:43:35,554 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:35,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:35,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-03-08 04:43:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2025-03-08 04:43:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2025-03-08 04:43:35,574 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 45 [2025-03-08 04:43:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:35,574 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2025-03-08 04:43:35,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2025-03-08 04:43:35,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:35,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:35,574 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:35,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:35,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:35,775 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:35,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash 170104497, now seen corresponding path program 9 times [2025-03-08 04:43:35,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:35,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977577074] [2025-03-08 04:43:35,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:35,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:35,778 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:35,782 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:35,783 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-03-08 04:43:35,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:35,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:35,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977577074] [2025-03-08 04:43:35,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977577074] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:35,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116724167] [2025-03-08 04:43:35,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:35,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:35,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:35,990 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:35,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2025-03-08 04:43:36,042 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 10 equivalence classes. [2025-03-08 04:43:36,057 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:36,057 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-03-08 04:43:36,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:36,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:43:36,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:36,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:36,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116724167] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:36,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:36,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 37 [2025-03-08 04:43:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609217854] [2025-03-08 04:43:36,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:36,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 04:43:36,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:36,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 04:43:36,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1057, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:43:36,427 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:36,545 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2025-03-08 04:43:36,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 04:43:36,545 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 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 45 [2025-03-08 04:43:36,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:36,545 INFO L225 Difference]: With dead ends: 99 [2025-03-08 04:43:36,545 INFO L226 Difference]: Without dead ends: 66 [2025-03-08 04:43:36,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 58 SyntacticMatches, 18 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=280, Invalid=1126, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 04:43:36,546 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:36,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:36,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-03-08 04:43:36,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2025-03-08 04:43:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 56 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2025-03-08 04:43:36,566 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 45 [2025-03-08 04:43:36,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:36,566 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2025-03-08 04:43:36,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2025-03-08 04:43:36,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-08 04:43:36,567 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:36,567 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:36,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:36,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2025-03-08 04:43:36,767 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:36,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:36,768 INFO L85 PathProgramCache]: Analyzing trace with hash 550812735, now seen corresponding path program 18 times [2025-03-08 04:43:36,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:36,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268515409] [2025-03-08 04:43:36,768 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:36,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:36,773 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 46 statements into 10 equivalence classes. [2025-03-08 04:43:36,778 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 46 of 46 statements. [2025-03-08 04:43:36,778 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-03-08 04:43:36,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 45 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:36,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:36,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268515409] [2025-03-08 04:43:36,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268515409] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:36,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180950138] [2025-03-08 04:43:36,898 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:36,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:36,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:36,900 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:36,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2025-03-08 04:43:36,952 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 46 statements into 10 equivalence classes. [2025-03-08 04:43:36,971 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 46 of 46 statements. [2025-03-08 04:43:36,971 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-03-08 04:43:36,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:36,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:36,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:37,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:37,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180950138] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:37,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:37,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2025-03-08 04:43:37,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824550363] [2025-03-08 04:43:37,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:37,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 04:43:37,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:37,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 04:43:37,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2025-03-08 04:43:37,130 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:37,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:37,238 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2025-03-08 04:43:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 04:43:37,238 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 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 46 [2025-03-08 04:43:37,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:37,239 INFO L225 Difference]: With dead ends: 68 [2025-03-08 04:43:37,239 INFO L226 Difference]: Without dead ends: 66 [2025-03-08 04:43:37,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 79 SyntacticMatches, 20 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2025-03-08 04:43:37,239 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:37,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 77 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-03-08 04:43:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2025-03-08 04:43:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 59 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2025-03-08 04:43:37,260 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 46 [2025-03-08 04:43:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:37,260 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2025-03-08 04:43:37,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2025-03-08 04:43:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:37,260 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:37,261 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:37,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2025-03-08 04:43:37,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:37,465 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:37,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:37,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1807008597, now seen corresponding path program 19 times [2025-03-08 04:43:37,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:37,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958048392] [2025-03-08 04:43:37,465 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:37,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:37,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-08 04:43:37,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:37,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:37,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:37,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958048392] [2025-03-08 04:43:37,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958048392] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120806117] [2025-03-08 04:43:37,671 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:37,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:37,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:37,673 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:37,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2025-03-08 04:43:37,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-08 04:43:37,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:37,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:37,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:37,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:37,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:38,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:38,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120806117] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:38,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:38,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2025-03-08 04:43:38,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999772456] [2025-03-08 04:43:38,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:38,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-03-08 04:43:38,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:38,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-03-08 04:43:38,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=1977, Unknown=0, NotChecked=0, Total=2450 [2025-03-08 04:43:38,292 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 50 states, 50 states have (on average 2.02) internal successors, (101), 50 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:38,413 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2025-03-08 04:43:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:38,413 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 50 states have internal predecessors, (101), 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 49 [2025-03-08 04:43:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:38,414 INFO L225 Difference]: With dead ends: 106 [2025-03-08 04:43:38,414 INFO L226 Difference]: Without dead ends: 70 [2025-03-08 04:43:38,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 53 SyntacticMatches, 20 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=478, Invalid=2072, Unknown=0, NotChecked=0, Total=2550 [2025-03-08 04:43:38,414 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:38,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:38,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-03-08 04:43:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2025-03-08 04:43:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-03-08 04:43:38,439 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2025-03-08 04:43:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:38,439 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-03-08 04:43:38,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 50 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-03-08 04:43:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:38,440 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:38,440 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:38,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2025-03-08 04:43:38,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2025-03-08 04:43:38,641 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:38,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash -237475701, now seen corresponding path program 37 times [2025-03-08 04:43:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:38,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951240409] [2025-03-08 04:43:38,641 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:38,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-08 04:43:38,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:38,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:38,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 127 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951240409] [2025-03-08 04:43:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951240409] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322838238] [2025-03-08 04:43:38,841 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:38,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:38,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:38,843 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:38,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2025-03-08 04:43:38,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-08 04:43:38,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:38,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:38,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:38,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:38,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 155 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:39,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 155 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:39,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322838238] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:39,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:39,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-03-08 04:43:39,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534923040] [2025-03-08 04:43:39,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:39,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-08 04:43:39,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:39,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-08 04:43:39,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1912, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 04:43:39,457 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 49 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:39,606 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2025-03-08 04:43:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:39,607 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 49 states have internal predecessors, (101), 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 49 [2025-03-08 04:43:39,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:39,607 INFO L225 Difference]: With dead ends: 114 [2025-03-08 04:43:39,607 INFO L226 Difference]: Without dead ends: 78 [2025-03-08 04:43:39,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 54 SyntacticMatches, 20 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1571 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=445, Invalid=2005, Unknown=0, NotChecked=0, Total=2450 [2025-03-08 04:43:39,608 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:39,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:39,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-03-08 04:43:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2025-03-08 04:43:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:39,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-03-08 04:43:39,635 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2025-03-08 04:43:39,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:39,635 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-03-08 04:43:39,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 49 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:39,635 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-03-08 04:43:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:39,635 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:39,635 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:39,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2025-03-08 04:43:39,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2025-03-08 04:43:39,835 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:39,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1710866261, now seen corresponding path program 38 times [2025-03-08 04:43:39,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:39,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629807699] [2025-03-08 04:43:39,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:39,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:39,839 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-03-08 04:43:39,845 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:39,845 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:39,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 127 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:40,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:40,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629807699] [2025-03-08 04:43:40,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629807699] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:40,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783070649] [2025-03-08 04:43:40,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:40,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:40,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:40,041 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:40,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2025-03-08 04:43:40,089 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-03-08 04:43:40,102 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:40,102 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:40,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:40,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:40,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 155 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:40,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 155 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:40,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783070649] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:40,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:40,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2025-03-08 04:43:40,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081161708] [2025-03-08 04:43:40,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:40,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-08 04:43:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:40,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-08 04:43:40,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=1845, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 04:43:40,607 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 48 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:40,792 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2025-03-08 04:43:40,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:40,792 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 48 states have internal predecessors, (100), 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 49 [2025-03-08 04:43:40,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:40,793 INFO L225 Difference]: With dead ends: 120 [2025-03-08 04:43:40,793 INFO L226 Difference]: Without dead ends: 84 [2025-03-08 04:43:40,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 55 SyntacticMatches, 20 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=1936, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 04:43:40,793 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:40,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-03-08 04:43:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2025-03-08 04:43:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-03-08 04:43:40,822 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2025-03-08 04:43:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:40,822 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-03-08 04:43:40,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 48 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-03-08 04:43:40,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:40,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:40,822 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:40,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2025-03-08 04:43:41,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2025-03-08 04:43:41,023 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:41,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2035489653, now seen corresponding path program 39 times [2025-03-08 04:43:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:41,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504712402] [2025-03-08 04:43:41,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:41,026 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 11 equivalence classes. [2025-03-08 04:43:41,031 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:41,031 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-08 04:43:41,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 127 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:41,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:41,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504712402] [2025-03-08 04:43:41,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504712402] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:41,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527769618] [2025-03-08 04:43:41,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:41,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:41,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:41,266 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:41,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2025-03-08 04:43:41,322 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 11 equivalence classes. [2025-03-08 04:43:41,343 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:41,343 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-08 04:43:41,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:41,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:41,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 155 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:41,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 155 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:41,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527769618] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:41,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:41,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 47 [2025-03-08 04:43:41,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69455331] [2025-03-08 04:43:41,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:41,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-03-08 04:43:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:41,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-03-08 04:43:41,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=1776, Unknown=0, NotChecked=0, Total=2162 [2025-03-08 04:43:41,865 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:42,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:42,085 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2025-03-08 04:43:42,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:42,085 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 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 49 [2025-03-08 04:43:42,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:42,086 INFO L225 Difference]: With dead ends: 124 [2025-03-08 04:43:42,086 INFO L226 Difference]: Without dead ends: 88 [2025-03-08 04:43:42,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 56 SyntacticMatches, 20 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 04:43:42,086 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:42,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-03-08 04:43:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 61. [2025-03-08 04:43:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:42,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-03-08 04:43:42,115 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2025-03-08 04:43:42,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:42,115 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-03-08 04:43:42,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:42,115 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-03-08 04:43:42,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:42,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:42,115 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:42,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2025-03-08 04:43:42,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2025-03-08 04:43:42,316 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:42,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:42,316 INFO L85 PathProgramCache]: Analyzing trace with hash 447890603, now seen corresponding path program 40 times [2025-03-08 04:43:42,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:42,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516458736] [2025-03-08 04:43:42,316 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:42,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:42,319 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-03-08 04:43:42,323 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:42,323 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:42,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 155 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:42,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:42,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516458736] [2025-03-08 04:43:42,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516458736] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:42,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783828251] [2025-03-08 04:43:42,514 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:42,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:42,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:42,516 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:42,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2025-03-08 04:43:42,565 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-03-08 04:43:42,579 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:42,579 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:42,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:42,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:42,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 155 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:42,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 155 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:43,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783828251] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:43,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:43,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2025-03-08 04:43:43,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884978924] [2025-03-08 04:43:43,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:43,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-08 04:43:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:43,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-08 04:43:43,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1467, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:43:43,074 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:43,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:43,265 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2025-03-08 04:43:43,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:43,265 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 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 49 [2025-03-08 04:43:43,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:43,266 INFO L225 Difference]: With dead ends: 126 [2025-03-08 04:43:43,266 INFO L226 Difference]: Without dead ends: 90 [2025-03-08 04:43:43,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 58 SyntacticMatches, 22 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=339, Invalid=1467, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:43:43,266 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:43,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:43,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-03-08 04:43:43,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 61. [2025-03-08 04:43:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-03-08 04:43:43,296 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2025-03-08 04:43:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:43,296 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-03-08 04:43:43,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:43,296 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-03-08 04:43:43,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:43,296 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:43,296 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:43,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2025-03-08 04:43:43,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:43,496 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:43,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:43,497 INFO L85 PathProgramCache]: Analyzing trace with hash -26189685, now seen corresponding path program 41 times [2025-03-08 04:43:43,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:43,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496976975] [2025-03-08 04:43:43,497 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:43,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:43,501 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 49 statements into 11 equivalence classes. [2025-03-08 04:43:43,505 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:43,505 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-08 04:43:43,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:43,688 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 155 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:43,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:43,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496976975] [2025-03-08 04:43:43,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496976975] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:43,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051809259] [2025-03-08 04:43:43,689 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:43,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:43,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:43,690 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:43,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2025-03-08 04:43:43,740 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 49 statements into 11 equivalence classes. [2025-03-08 04:43:43,757 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:43,757 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-08 04:43:43,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:43,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:43,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 155 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:44,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 155 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:44,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051809259] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:44,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:44,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 42 [2025-03-08 04:43:44,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969988712] [2025-03-08 04:43:44,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:44,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-08 04:43:44,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:44,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-08 04:43:44,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2025-03-08 04:43:44,205 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 42 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:44,402 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2025-03-08 04:43:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:44,402 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 42 states have internal predecessors, (87), 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 49 [2025-03-08 04:43:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:44,403 INFO L225 Difference]: With dead ends: 127 [2025-03-08 04:43:44,403 INFO L226 Difference]: Without dead ends: 91 [2025-03-08 04:43:44,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 59 SyntacticMatches, 22 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2025-03-08 04:43:44,403 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:44,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-03-08 04:43:44,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2025-03-08 04:43:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-03-08 04:43:44,433 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2025-03-08 04:43:44,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:44,433 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-03-08 04:43:44,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 42 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:44,433 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-03-08 04:43:44,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:44,433 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:44,433 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:44,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2025-03-08 04:43:44,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:44,634 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:44,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash 512706731, now seen corresponding path program 42 times [2025-03-08 04:43:44,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:44,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834898376] [2025-03-08 04:43:44,634 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:44,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:44,637 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 49 statements into 11 equivalence classes. [2025-03-08 04:43:44,642 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:44,642 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-03-08 04:43:44,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 127 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:44,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:44,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834898376] [2025-03-08 04:43:44,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834898376] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:44,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624708347] [2025-03-08 04:43:44,827 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:44,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:44,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:44,829 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:44,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2025-03-08 04:43:44,879 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 49 statements into 11 equivalence classes. [2025-03-08 04:43:44,895 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:44,895 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-03-08 04:43:44,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:44,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:44,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 155 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:45,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 155 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:45,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624708347] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:45,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:45,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 44 [2025-03-08 04:43:45,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451872810] [2025-03-08 04:43:45,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:45,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-08 04:43:45,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:45,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-08 04:43:45,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1557, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 04:43:45,344 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:45,573 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2025-03-08 04:43:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:45,573 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 44 states have internal predecessors, (96), 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 49 [2025-03-08 04:43:45,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:45,574 INFO L225 Difference]: With dead ends: 127 [2025-03-08 04:43:45,574 INFO L226 Difference]: Without dead ends: 91 [2025-03-08 04:43:45,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 59 SyntacticMatches, 20 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=1640, Unknown=0, NotChecked=0, Total=1980 [2025-03-08 04:43:45,574 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:45,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-03-08 04:43:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2025-03-08 04:43:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-03-08 04:43:45,604 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2025-03-08 04:43:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:45,605 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-03-08 04:43:45,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-03-08 04:43:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:45,605 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:45,605 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:45,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2025-03-08 04:43:45,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:45,805 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:45,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:45,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1222827147, now seen corresponding path program 43 times [2025-03-08 04:43:45,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:45,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030986581] [2025-03-08 04:43:45,806 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:45,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:45,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-08 04:43:45,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:45,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:45,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 127 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:46,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:46,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030986581] [2025-03-08 04:43:46,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030986581] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:46,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854374783] [2025-03-08 04:43:46,000 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:46,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:46,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:46,002 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:46,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2025-03-08 04:43:46,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-08 04:43:46,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:46,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:46,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:46,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:46,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 155 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:46,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 155 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:46,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854374783] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:46,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:46,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2025-03-08 04:43:46,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844959558] [2025-03-08 04:43:46,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:46,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-08 04:43:46,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:46,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-08 04:43:46,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:43:46,515 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:46,724 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2025-03-08 04:43:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:46,724 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 43 states have internal predecessors, (95), 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 49 [2025-03-08 04:43:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:46,725 INFO L225 Difference]: With dead ends: 125 [2025-03-08 04:43:46,725 INFO L226 Difference]: Without dead ends: 89 [2025-03-08 04:43:46,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 60 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=1561, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 04:43:46,725 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:46,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-03-08 04:43:46,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 61. [2025-03-08 04:43:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-03-08 04:43:46,756 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2025-03-08 04:43:46,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:46,756 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-03-08 04:43:46,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:46,756 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-03-08 04:43:46,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:46,756 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:46,756 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:46,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2025-03-08 04:43:46,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2025-03-08 04:43:46,957 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:46,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1109570389, now seen corresponding path program 44 times [2025-03-08 04:43:46,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:46,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230716010] [2025-03-08 04:43:46,957 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:46,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:46,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-03-08 04:43:46,963 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:46,963 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:46,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 127 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230716010] [2025-03-08 04:43:47,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230716010] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392377231] [2025-03-08 04:43:47,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:47,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:47,207 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:47,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2025-03-08 04:43:47,263 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-03-08 04:43:47,278 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:47,278 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:47,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:47,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:47,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 155 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:47,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 155 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:47,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392377231] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:47,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:47,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 42 [2025-03-08 04:43:47,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352855409] [2025-03-08 04:43:47,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:47,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-08 04:43:47,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:47,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-08 04:43:47,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1401, Unknown=0, NotChecked=0, Total=1722 [2025-03-08 04:43:47,716 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 42 states, 42 states have (on average 2.238095238095238) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:47,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:47,908 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2025-03-08 04:43:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:47,908 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.238095238095238) internal successors, (94), 42 states have internal predecessors, (94), 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 49 [2025-03-08 04:43:47,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:47,909 INFO L225 Difference]: With dead ends: 121 [2025-03-08 04:43:47,909 INFO L226 Difference]: Without dead ends: 85 [2025-03-08 04:43:47,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:43:47,909 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:47,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:47,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-03-08 04:43:47,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 61. [2025-03-08 04:43:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-03-08 04:43:47,947 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2025-03-08 04:43:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:47,947 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-03-08 04:43:47,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.238095238095238) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-03-08 04:43:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:47,948 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:47,948 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:47,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:48,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:48,148 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:48,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:48,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1170495627, now seen corresponding path program 45 times [2025-03-08 04:43:48,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:48,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631882211] [2025-03-08 04:43:48,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:48,152 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 11 equivalence classes. [2025-03-08 04:43:48,158 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:48,158 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-08 04:43:48,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 127 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:48,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:48,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631882211] [2025-03-08 04:43:48,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631882211] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:48,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683274483] [2025-03-08 04:43:48,347 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:48,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:48,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:48,349 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:48,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2025-03-08 04:43:48,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 11 equivalence classes. [2025-03-08 04:43:48,417 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:48,417 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-08 04:43:48,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:48,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:48,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 155 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:48,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 155 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:48,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683274483] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:48,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:48,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 41 [2025-03-08 04:43:48,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635420595] [2025-03-08 04:43:48,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:48,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-08 04:43:48,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:48,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-08 04:43:48,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1320, Unknown=0, NotChecked=0, Total=1640 [2025-03-08 04:43:48,844 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 41 states, 41 states have (on average 2.268292682926829) internal successors, (93), 41 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:49,030 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2025-03-08 04:43:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:49,030 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.268292682926829) internal successors, (93), 41 states have internal predecessors, (93), 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 49 [2025-03-08 04:43:49,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:49,031 INFO L225 Difference]: With dead ends: 115 [2025-03-08 04:43:49,031 INFO L226 Difference]: Without dead ends: 79 [2025-03-08 04:43:49,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 20 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=1397, Unknown=0, NotChecked=0, Total=1722 [2025-03-08 04:43:49,031 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:49,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-03-08 04:43:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 61. [2025-03-08 04:43:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-03-08 04:43:49,062 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2025-03-08 04:43:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:49,062 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-03-08 04:43:49,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.268292682926829) internal successors, (93), 41 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-03-08 04:43:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 04:43:49,063 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:49,063 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:49,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:49,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:49,263 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:49,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:49,263 INFO L85 PathProgramCache]: Analyzing trace with hash 551309483, now seen corresponding path program 10 times [2025-03-08 04:43:49,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:49,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445842457] [2025-03-08 04:43:49,263 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:49,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:49,267 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-03-08 04:43:49,270 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:49,270 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:49,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:49,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:49,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445842457] [2025-03-08 04:43:49,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445842457] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:49,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43217657] [2025-03-08 04:43:49,450 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:49,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:49,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:49,452 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:49,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2025-03-08 04:43:49,505 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-03-08 04:43:49,519 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 04:43:49,519 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:49,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:49,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:43:49,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:49,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:49,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43217657] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:49,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:49,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 37 [2025-03-08 04:43:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866004811] [2025-03-08 04:43:49,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:49,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 04:43:49,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:49,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 04:43:49,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:43:49,948 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:50,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:50,078 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2025-03-08 04:43:50,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 04:43:50,079 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 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 49 [2025-03-08 04:43:50,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:50,079 INFO L225 Difference]: With dead ends: 108 [2025-03-08 04:43:50,079 INFO L226 Difference]: Without dead ends: 72 [2025-03-08 04:43:50,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 64 SyntacticMatches, 22 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:43:50,079 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:50,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:50,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-03-08 04:43:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2025-03-08 04:43:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 61 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2025-03-08 04:43:50,111 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 49 [2025-03-08 04:43:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:50,111 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2025-03-08 04:43:50,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2025-03-08 04:43:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-08 04:43:50,111 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:50,111 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:50,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2025-03-08 04:43:50,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2025-03-08 04:43:50,312 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:50,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:50,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1389623527, now seen corresponding path program 20 times [2025-03-08 04:43:50,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:50,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38837154] [2025-03-08 04:43:50,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:50,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:50,315 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-03-08 04:43:50,318 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 04:43:50,318 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:50,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 55 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:50,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:50,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38837154] [2025-03-08 04:43:50,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38837154] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:50,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404410376] [2025-03-08 04:43:50,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:50,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:50,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:50,430 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:50,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2025-03-08 04:43:50,488 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-03-08 04:43:50,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 04:43:50,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:50,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:50,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-08 04:43:50,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:50,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:50,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404410376] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:50,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:50,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2025-03-08 04:43:50,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536202116] [2025-03-08 04:43:50,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:50,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 04:43:50,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:50,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 04:43:50,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:43:50,664 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:50,798 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2025-03-08 04:43:50,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 04:43:50,798 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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 50 [2025-03-08 04:43:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:50,799 INFO L225 Difference]: With dead ends: 73 [2025-03-08 04:43:50,799 INFO L226 Difference]: Without dead ends: 71 [2025-03-08 04:43:50,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 85 SyntacticMatches, 23 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2025-03-08 04:43:50,799 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:50,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 101 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:50,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-03-08 04:43:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2025-03-08 04:43:50,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.21875) internal successors, (78), 64 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2025-03-08 04:43:50,832 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 50 [2025-03-08 04:43:50,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:50,832 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2025-03-08 04:43:50,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2025-03-08 04:43:50,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:43:50,832 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:50,832 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:50,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:51,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2025-03-08 04:43:51,034 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:51,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:51,034 INFO L85 PathProgramCache]: Analyzing trace with hash 916114321, now seen corresponding path program 21 times [2025-03-08 04:43:51,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:51,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397122359] [2025-03-08 04:43:51,034 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:51,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:51,037 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:43:51,043 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:51,043 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-03-08 04:43:51,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 156 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:51,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397122359] [2025-03-08 04:43:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397122359] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473116417] [2025-03-08 04:43:51,287 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:51,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:51,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:51,289 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:51,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2025-03-08 04:43:51,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:43:51,361 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:51,361 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-03-08 04:43:51,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:51,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:43:51,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:51,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:52,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473116417] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:52,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:52,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2025-03-08 04:43:52,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641471141] [2025-03-08 04:43:52,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:52,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-03-08 04:43:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:52,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-03-08 04:43:52,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=2311, Unknown=0, NotChecked=0, Total=2862 [2025-03-08 04:43:52,037 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 54 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:52,190 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2025-03-08 04:43:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:43:52,190 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 54 states have internal predecessors, (109), 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 53 [2025-03-08 04:43:52,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:52,191 INFO L225 Difference]: With dead ends: 115 [2025-03-08 04:43:52,191 INFO L226 Difference]: Without dead ends: 76 [2025-03-08 04:43:52,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 57 SyntacticMatches, 22 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=556, Invalid=2414, Unknown=0, NotChecked=0, Total=2970 [2025-03-08 04:43:52,191 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:52,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-03-08 04:43:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2025-03-08 04:43:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:43:52,229 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:43:52,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:52,229 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:43:52,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 54 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:43:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:43:52,229 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:52,229 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:52,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2025-03-08 04:43:52,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:52,429 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:52,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:52,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1877935985, now seen corresponding path program 46 times [2025-03-08 04:43:52,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:52,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063173577] [2025-03-08 04:43:52,430 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:52,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:52,435 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-03-08 04:43:52,438 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:52,438 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:52,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:52,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:52,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063173577] [2025-03-08 04:43:52,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063173577] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:52,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327044230] [2025-03-08 04:43:52,689 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:52,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:52,690 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:52,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2025-03-08 04:43:52,746 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-03-08 04:43:52,760 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:52,760 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:52,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:52,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:43:52,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:53,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:53,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327044230] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:53,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:53,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 50 [2025-03-08 04:43:53,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428376490] [2025-03-08 04:43:53,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:53,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-03-08 04:43:53,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:53,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-03-08 04:43:53,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=484, Invalid=1966, Unknown=0, NotChecked=0, Total=2450 [2025-03-08 04:43:53,353 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 50 states, 50 states have (on average 1.98) internal successors, (99), 50 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:53,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:53,565 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2025-03-08 04:43:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:43:53,565 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.98) internal successors, (99), 50 states have internal predecessors, (99), 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 53 [2025-03-08 04:43:53,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:53,565 INFO L225 Difference]: With dead ends: 124 [2025-03-08 04:43:53,565 INFO L226 Difference]: Without dead ends: 85 [2025-03-08 04:43:53,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 59 SyntacticMatches, 24 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1507 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=484, Invalid=1966, Unknown=0, NotChecked=0, Total=2450 [2025-03-08 04:43:53,566 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:53,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:53,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-03-08 04:43:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2025-03-08 04:43:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:43:53,608 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:43:53,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:53,609 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:43:53,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.98) internal successors, (99), 50 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:53,609 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:43:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:43:53,609 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:53,609 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:53,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2025-03-08 04:43:53,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:53,810 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:53,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:53,810 INFO L85 PathProgramCache]: Analyzing trace with hash 523489169, now seen corresponding path program 47 times [2025-03-08 04:43:53,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:53,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512785147] [2025-03-08 04:43:53,810 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:53,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:53,815 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:43:53,821 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:53,821 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-03-08 04:43:53,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 187 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:54,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:54,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512785147] [2025-03-08 04:43:54,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512785147] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:54,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076995477] [2025-03-08 04:43:54,036 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:54,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:54,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:54,038 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:54,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2025-03-08 04:43:54,094 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:43:54,113 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:54,113 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-03-08 04:43:54,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:54,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:43:54,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 187 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:54,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 187 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:54,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076995477] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:54,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:54,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 49 [2025-03-08 04:43:54,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541330115] [2025-03-08 04:43:54,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:54,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-08 04:43:54,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:54,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-08 04:43:54,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 04:43:54,699 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:54,906 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2025-03-08 04:43:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:43:54,907 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 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 53 [2025-03-08 04:43:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:54,907 INFO L225 Difference]: With dead ends: 131 [2025-03-08 04:43:54,907 INFO L226 Difference]: Without dead ends: 92 [2025-03-08 04:43:54,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 60 SyntacticMatches, 24 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1419 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 04:43:54,908 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:54,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-03-08 04:43:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 66. [2025-03-08 04:43:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:43:54,955 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:43:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:54,955 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:43:54,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:43:54,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:43:54,955 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:54,955 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:54,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2025-03-08 04:43:55,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2025-03-08 04:43:55,155 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:55,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:55,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1311081329, now seen corresponding path program 48 times [2025-03-08 04:43:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:55,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12775077] [2025-03-08 04:43:55,156 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:55,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:55,159 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:43:55,164 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:55,164 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-03-08 04:43:55,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 156 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:55,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:55,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12775077] [2025-03-08 04:43:55,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12775077] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:55,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616814263] [2025-03-08 04:43:55,397 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:55,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:55,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:55,398 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:55,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2025-03-08 04:43:55,455 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:43:55,474 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:55,474 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-03-08 04:43:55,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:55,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:43:55,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 187 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:55,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 187 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:56,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616814263] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:56,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:56,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 51 [2025-03-08 04:43:56,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092539276] [2025-03-08 04:43:56,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:56,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-03-08 04:43:56,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:56,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-03-08 04:43:56,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=2095, Unknown=0, NotChecked=0, Total=2550 [2025-03-08 04:43:56,055 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 51 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:56,318 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2025-03-08 04:43:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:43:56,318 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 51 states have internal predecessors, (107), 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 53 [2025-03-08 04:43:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:56,319 INFO L225 Difference]: With dead ends: 136 [2025-03-08 04:43:56,319 INFO L226 Difference]: Without dead ends: 97 [2025-03-08 04:43:56,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 60 SyntacticMatches, 22 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=460, Invalid=2192, Unknown=0, NotChecked=0, Total=2652 [2025-03-08 04:43:56,319 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:56,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:56,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-03-08 04:43:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2025-03-08 04:43:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:43:56,363 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:43:56,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:56,363 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:43:56,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 51 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:43:56,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:43:56,364 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:56,364 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:56,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2025-03-08 04:43:56,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:56,564 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:56,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:56,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1573006447, now seen corresponding path program 49 times [2025-03-08 04:43:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:56,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914662968] [2025-03-08 04:43:56,565 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:56,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:56,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-08 04:43:56,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:56,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:56,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 156 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:56,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:56,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914662968] [2025-03-08 04:43:56,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914662968] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:56,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948701921] [2025-03-08 04:43:56,791 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:56,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:56,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:56,793 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:56,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2025-03-08 04:43:56,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-08 04:43:56,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:56,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:56,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:56,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:43:56,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 187 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:57,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 187 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:57,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948701921] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:57,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:57,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 50 [2025-03-08 04:43:57,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911418728] [2025-03-08 04:43:57,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:57,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-03-08 04:43:57,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:57,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-03-08 04:43:57,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=2019, Unknown=0, NotChecked=0, Total=2450 [2025-03-08 04:43:57,424 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 50 states, 50 states have (on average 2.12) internal successors, (106), 50 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) [2025-03-08 04:43:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:57,741 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2025-03-08 04:43:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:43:57,741 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.12) internal successors, (106), 50 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 53 [2025-03-08 04:43:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:57,742 INFO L225 Difference]: With dead ends: 139 [2025-03-08 04:43:57,742 INFO L226 Difference]: Without dead ends: 100 [2025-03-08 04:43:57,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 61 SyntacticMatches, 22 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=436, Invalid=2114, Unknown=0, NotChecked=0, Total=2550 [2025-03-08 04:43:57,742 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:57,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:57,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-03-08 04:43:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 66. [2025-03-08 04:43:57,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:57,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:43:57,788 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:43:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:57,788 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:43:57,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.12) internal successors, (106), 50 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) [2025-03-08 04:43:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:43:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:43:57,789 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:57,789 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:57,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2025-03-08 04:43:57,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:57,989 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:57,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:57,989 INFO L85 PathProgramCache]: Analyzing trace with hash -3473551, now seen corresponding path program 50 times [2025-03-08 04:43:57,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:57,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893643004] [2025-03-08 04:43:57,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:57,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:57,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-03-08 04:43:57,997 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:57,997 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:57,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 156 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:58,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:58,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893643004] [2025-03-08 04:43:58,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893643004] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:58,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999256581] [2025-03-08 04:43:58,241 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:58,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:58,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:58,242 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:58,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2025-03-08 04:43:58,300 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-03-08 04:43:58,315 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:58,315 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:58,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:58,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:43:58,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 187 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:58,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 187 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:58,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999256581] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:58,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:58,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 49 [2025-03-08 04:43:58,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633400103] [2025-03-08 04:43:58,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:58,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-08 04:43:58,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:58,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-08 04:43:58,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=1941, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 04:43:58,863 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:59,178 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2025-03-08 04:43:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:43:59,179 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 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 53 [2025-03-08 04:43:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:59,179 INFO L225 Difference]: With dead ends: 140 [2025-03-08 04:43:59,179 INFO L226 Difference]: Without dead ends: 101 [2025-03-08 04:43:59,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 62 SyntacticMatches, 22 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=416, Invalid=2034, Unknown=0, NotChecked=0, Total=2450 [2025-03-08 04:43:59,180 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:59,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 210 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-03-08 04:43:59,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 66. [2025-03-08 04:43:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:43:59,225 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:43:59,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:59,225 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:43:59,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:59,226 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:43:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:43:59,226 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:59,226 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:59,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2025-03-08 04:43:59,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2025-03-08 04:43:59,426 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:59,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:59,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1476864111, now seen corresponding path program 51 times [2025-03-08 04:43:59,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:59,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942678817] [2025-03-08 04:43:59,427 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:59,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:59,430 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:43:59,435 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:59,435 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-03-08 04:43:59,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 156 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:59,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:59,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942678817] [2025-03-08 04:43:59,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942678817] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:59,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139131544] [2025-03-08 04:43:59,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:59,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:59,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:59,659 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:59,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2025-03-08 04:43:59,718 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:43:59,736 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:43:59,736 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-03-08 04:43:59,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:59,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:43:59,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 187 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:00,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 187 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:00,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139131544] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:00,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:00,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 48 [2025-03-08 04:44:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261221207] [2025-03-08 04:44:00,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:00,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-08 04:44:00,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:00,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-08 04:44:00,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1861, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 04:44:00,271 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:00,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:00,572 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2025-03-08 04:44:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:44:00,572 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 states have internal predecessors, (104), 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 53 [2025-03-08 04:44:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:00,573 INFO L225 Difference]: With dead ends: 141 [2025-03-08 04:44:00,573 INFO L226 Difference]: Without dead ends: 102 [2025-03-08 04:44:00,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 63 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=400, Invalid=1952, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 04:44:00,573 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:00,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:00,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-03-08 04:44:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 66. [2025-03-08 04:44:00,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:44:00,620 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:44:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:00,620 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:44:00,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:44:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:44:00,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:00,620 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:00,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2025-03-08 04:44:00,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:00,821 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:00,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1801487503, now seen corresponding path program 52 times [2025-03-08 04:44:00,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:00,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775876570] [2025-03-08 04:44:00,821 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:44:00,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:00,825 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-03-08 04:44:00,829 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:44:00,829 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:44:00,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 187 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:01,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775876570] [2025-03-08 04:44:01,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775876570] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029081515] [2025-03-08 04:44:01,040 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:44:01,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:01,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:01,044 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:01,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2025-03-08 04:44:01,103 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-03-08 04:44:01,118 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:44:01,118 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:44:01,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:01,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:44:01,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 187 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:01,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 187 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:01,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029081515] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:01,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:01,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 44 [2025-03-08 04:44:01,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608661655] [2025-03-08 04:44:01,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:01,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-08 04:44:01,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:01,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-08 04:44:01,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=1534, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 04:44:01,619 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:01,900 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2025-03-08 04:44:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:44:01,900 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 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 53 [2025-03-08 04:44:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:01,901 INFO L225 Difference]: With dead ends: 140 [2025-03-08 04:44:01,901 INFO L226 Difference]: Without dead ends: 101 [2025-03-08 04:44:01,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 24 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=358, Invalid=1534, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 04:44:01,901 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:01,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-03-08 04:44:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 66. [2025-03-08 04:44:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:44:01,948 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:44:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:01,948 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:44:01,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:44:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:44:01,949 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:01,949 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:01,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2025-03-08 04:44:02,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:02,149 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:02,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash 681892753, now seen corresponding path program 53 times [2025-03-08 04:44:02,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:02,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828721510] [2025-03-08 04:44:02,150 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:44:02,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:02,153 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:44:02,159 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:44:02,159 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-03-08 04:44:02,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 187 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:02,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828721510] [2025-03-08 04:44:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828721510] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984079448] [2025-03-08 04:44:02,371 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:44:02,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:02,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:02,373 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:02,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2025-03-08 04:44:02,434 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:44:02,452 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:44:02,452 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-03-08 04:44:02,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:02,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:44:02,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 187 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:02,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 187 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:02,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984079448] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:02,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:02,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 43 [2025-03-08 04:44:02,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909490038] [2025-03-08 04:44:02,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:02,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-08 04:44:02,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:02,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-08 04:44:02,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1455, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:44:02,932 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 43 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:03,195 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2025-03-08 04:44:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:44:03,195 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 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 53 [2025-03-08 04:44:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:03,196 INFO L225 Difference]: With dead ends: 137 [2025-03-08 04:44:03,196 INFO L226 Difference]: Without dead ends: 98 [2025-03-08 04:44:03,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 66 SyntacticMatches, 24 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=351, Invalid=1455, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:44:03,196 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:03,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-03-08 04:44:03,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 66. [2025-03-08 04:44:03,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:44:03,244 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:44:03,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:03,244 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:44:03,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:03,244 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:44:03,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:44:03,244 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:03,244 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:03,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2025-03-08 04:44:03,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:03,445 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:03,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash 207812465, now seen corresponding path program 54 times [2025-03-08 04:44:03,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:03,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404602151] [2025-03-08 04:44:03,445 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:44:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:03,450 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:44:03,455 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:44:03,455 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-03-08 04:44:03,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 156 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:03,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404602151] [2025-03-08 04:44:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404602151] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054840998] [2025-03-08 04:44:03,686 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:44:03,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:03,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:03,688 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:03,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2025-03-08 04:44:03,758 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:44:03,781 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:44:03,781 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-03-08 04:44:03,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:03,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:44:03,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 187 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:04,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 187 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:04,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054840998] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:04,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:04,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 45 [2025-03-08 04:44:04,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367407066] [2025-03-08 04:44:04,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:04,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-08 04:44:04,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:04,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-08 04:44:04,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1609, Unknown=0, NotChecked=0, Total=1980 [2025-03-08 04:44:04,289 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 45 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:04,550 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2025-03-08 04:44:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:44:04,550 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 45 states have internal predecessors, (101), 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 53 [2025-03-08 04:44:04,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:04,551 INFO L225 Difference]: With dead ends: 132 [2025-03-08 04:44:04,551 INFO L226 Difference]: Without dead ends: 93 [2025-03-08 04:44:04,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 66 SyntacticMatches, 22 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1694, Unknown=0, NotChecked=0, Total=2070 [2025-03-08 04:44:04,551 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:04,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:04,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-03-08 04:44:04,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2025-03-08 04:44:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:44:04,599 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:44:04,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:04,599 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:44:04,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 45 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:04,599 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:44:04,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:44:04,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:04,599 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:04,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2025-03-08 04:44:04,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:04,800 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:04,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash 746708881, now seen corresponding path program 55 times [2025-03-08 04:44:04,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:04,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520494540] [2025-03-08 04:44:04,800 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:44:04,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:04,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-08 04:44:04,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:44:04,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:44:04,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 156 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:05,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520494540] [2025-03-08 04:44:05,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520494540] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523571090] [2025-03-08 04:44:05,023 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:44:05,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:05,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:05,025 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:05,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2025-03-08 04:44:05,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-08 04:44:05,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:44:05,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:44:05,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:05,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:44:05,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:05,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:05,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523571090] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:05,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:05,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 44 [2025-03-08 04:44:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002912086] [2025-03-08 04:44:05,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:05,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-08 04:44:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:05,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-08 04:44:05,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1521, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 04:44:05,602 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:05,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:05,871 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2025-03-08 04:44:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:44:05,871 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 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 53 [2025-03-08 04:44:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:05,871 INFO L225 Difference]: With dead ends: 125 [2025-03-08 04:44:05,872 INFO L226 Difference]: Without dead ends: 86 [2025-03-08 04:44:05,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 22 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1604, Unknown=0, NotChecked=0, Total=1980 [2025-03-08 04:44:05,872 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:05,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:05,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-03-08 04:44:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2025-03-08 04:44:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2025-03-08 04:44:05,925 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 53 [2025-03-08 04:44:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:05,925 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2025-03-08 04:44:05,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2025-03-08 04:44:05,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 04:44:05,925 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:05,925 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:05,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2025-03-08 04:44:06,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:06,126 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:06,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:06,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1456829297, now seen corresponding path program 11 times [2025-03-08 04:44:06,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:06,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743137880] [2025-03-08 04:44:06,126 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:44:06,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:06,129 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:44:06,135 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:44:06,135 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-03-08 04:44:06,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:06,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:06,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743137880] [2025-03-08 04:44:06,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743137880] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:06,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168053410] [2025-03-08 04:44:06,347 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:44:06,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:06,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:06,349 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:06,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2025-03-08 04:44:06,411 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 12 equivalence classes. [2025-03-08 04:44:06,429 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 04:44:06,429 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-03-08 04:44:06,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:06,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:44:06,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:06,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:06,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168053410] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:06,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:06,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 40 [2025-03-08 04:44:06,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249144605] [2025-03-08 04:44:06,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:06,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-08 04:44:06,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:06,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-08 04:44:06,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2025-03-08 04:44:06,889 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 40 states, 40 states have (on average 2.225) internal successors, (89), 40 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:07,065 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2025-03-08 04:44:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:44:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.225) internal successors, (89), 40 states have internal predecessors, (89), 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 53 [2025-03-08 04:44:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:07,066 INFO L225 Difference]: With dead ends: 117 [2025-03-08 04:44:07,066 INFO L226 Difference]: Without dead ends: 78 [2025-03-08 04:44:07,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 69 SyntacticMatches, 24 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2025-03-08 04:44:07,066 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:07,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:07,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-03-08 04:44:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2025-03-08 04:44:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2025-03-08 04:44:07,115 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 53 [2025-03-08 04:44:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:07,115 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2025-03-08 04:44:07,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.225) internal successors, (89), 40 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2025-03-08 04:44:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-08 04:44:07,116 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:07,116 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:07,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2025-03-08 04:44:07,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2025-03-08 04:44:07,316 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:07,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash 68464383, now seen corresponding path program 22 times [2025-03-08 04:44:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:07,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656304492] [2025-03-08 04:44:07,317 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:44:07,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:07,320 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 54 statements into 2 equivalence classes. [2025-03-08 04:44:07,324 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 54 of 54 statements. [2025-03-08 04:44:07,324 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:44:07,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:07,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:07,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656304492] [2025-03-08 04:44:07,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656304492] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:07,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007376871] [2025-03-08 04:44:07,452 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:44:07,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:07,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:07,454 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:07,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2025-03-08 04:44:07,518 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 54 statements into 2 equivalence classes. [2025-03-08 04:44:07,534 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 54 of 54 statements. [2025-03-08 04:44:07,534 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:44:07,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:07,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:07,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:07,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:07,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007376871] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:07,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:07,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 17 [2025-03-08 04:44:07,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504317628] [2025-03-08 04:44:07,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:07,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 04:44:07,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:07,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 04:44:07,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:44:07,725 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:07,880 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2025-03-08 04:44:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:44:07,881 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 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 54 [2025-03-08 04:44:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:07,881 INFO L225 Difference]: With dead ends: 78 [2025-03-08 04:44:07,881 INFO L226 Difference]: Without dead ends: 76 [2025-03-08 04:44:07,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 94 SyntacticMatches, 24 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=498, Unknown=0, NotChecked=0, Total=812 [2025-03-08 04:44:07,882 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:07,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 72 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-03-08 04:44:07,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2025-03-08 04:44:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2025-03-08 04:44:07,931 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 54 [2025-03-08 04:44:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:07,931 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2025-03-08 04:44:07,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:07,931 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2025-03-08 04:44:07,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:07,932 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:07,932 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:07,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2025-03-08 04:44:08,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2025-03-08 04:44:08,132 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:08,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash -486190613, now seen corresponding path program 23 times [2025-03-08 04:44:08,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:08,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064415509] [2025-03-08 04:44:08,133 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:44:08,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:08,137 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:08,143 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:08,143 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-03-08 04:44:08,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:08,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064415509] [2025-03-08 04:44:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064415509] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978839042] [2025-03-08 04:44:08,399 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:44:08,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:08,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:08,401 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:08,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2025-03-08 04:44:08,465 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:08,484 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:08,484 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-03-08 04:44:08,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:08,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:08,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:08,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:09,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978839042] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:09,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:09,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2025-03-08 04:44:09,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360519077] [2025-03-08 04:44:09,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:09,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-03-08 04:44:09,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:09,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-03-08 04:44:09,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=2476, Unknown=0, NotChecked=0, Total=3080 [2025-03-08 04:44:09,170 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 56 states, 56 states have (on average 2.0) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:09,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:09,356 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2025-03-08 04:44:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:09,356 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0) internal successors, (112), 56 states have internal predecessors, (112), 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 57 [2025-03-08 04:44:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:09,357 INFO L225 Difference]: With dead ends: 124 [2025-03-08 04:44:09,357 INFO L226 Difference]: Without dead ends: 82 [2025-03-08 04:44:09,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 61 SyntacticMatches, 26 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=604, Invalid=2476, Unknown=0, NotChecked=0, Total=3080 [2025-03-08 04:44:09,357 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:09,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:09,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-03-08 04:44:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 71. [2025-03-08 04:44:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:09,415 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:09,415 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:09,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:09,415 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:09,415 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:09,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2025-03-08 04:44:09,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:09,616 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:09,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:09,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1642553909, now seen corresponding path program 56 times [2025-03-08 04:44:09,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:09,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818545905] [2025-03-08 04:44:09,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:44:09,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:09,620 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-08 04:44:09,623 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:09,623 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:44:09,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 188 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:09,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:09,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818545905] [2025-03-08 04:44:09,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818545905] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:09,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003389960] [2025-03-08 04:44:09,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:44:09,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:09,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:09,880 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:09,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2025-03-08 04:44:09,945 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-08 04:44:09,960 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:09,960 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:44:09,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:09,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:09,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 222 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:10,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 222 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:10,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003389960] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:10,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:10,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 57 [2025-03-08 04:44:10,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517143385] [2025-03-08 04:44:10,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:10,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-03-08 04:44:10,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:10,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-03-08 04:44:10,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=2596, Unknown=0, NotChecked=0, Total=3192 [2025-03-08 04:44:10,640 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 57 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 57 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:10,921 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2025-03-08 04:44:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:10,922 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 57 states have internal predecessors, (117), 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 57 [2025-03-08 04:44:10,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:10,922 INFO L225 Difference]: With dead ends: 134 [2025-03-08 04:44:10,922 INFO L226 Difference]: Without dead ends: 92 [2025-03-08 04:44:10,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 62 SyntacticMatches, 24 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306 [2025-03-08 04:44:10,923 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:10,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-03-08 04:44:10,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 71. [2025-03-08 04:44:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:10,985 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:10,985 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:10,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 57 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:10,985 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:10,985 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:10,985 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:10,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2025-03-08 04:44:11,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:11,186 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:11,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:11,186 INFO L85 PathProgramCache]: Analyzing trace with hash 259806699, now seen corresponding path program 57 times [2025-03-08 04:44:11,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:11,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34209344] [2025-03-08 04:44:11,186 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:44:11,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:11,190 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:11,194 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:11,195 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-08 04:44:11,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 188 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:11,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:11,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34209344] [2025-03-08 04:44:11,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34209344] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:11,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468600098] [2025-03-08 04:44:11,455 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:44:11,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:11,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:11,456 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:11,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2025-03-08 04:44:11,521 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:11,541 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:11,541 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-08 04:44:11,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:11,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:11,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 222 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:11,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 222 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:12,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468600098] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:12,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:12,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2025-03-08 04:44:12,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034920151] [2025-03-08 04:44:12,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:12,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-03-08 04:44:12,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:12,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-03-08 04:44:12,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2025-03-08 04:44:12,204 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 56 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:12,553 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2025-03-08 04:44:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:12,554 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 56 states have internal predecessors, (116), 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 57 [2025-03-08 04:44:12,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:12,554 INFO L225 Difference]: With dead ends: 142 [2025-03-08 04:44:12,554 INFO L226 Difference]: Without dead ends: 100 [2025-03-08 04:44:12,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 63 SyntacticMatches, 24 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=566, Invalid=2626, Unknown=0, NotChecked=0, Total=3192 [2025-03-08 04:44:12,555 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:12,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:12,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-03-08 04:44:12,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 71. [2025-03-08 04:44:12,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:12,621 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:12,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:12,621 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:12,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 56 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:12,621 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:12,621 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:12,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2025-03-08 04:44:12,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:12,822 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:12,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1152457163, now seen corresponding path program 58 times [2025-03-08 04:44:12,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:12,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258349871] [2025-03-08 04:44:12,822 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:44:12,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:12,826 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-03-08 04:44:12,829 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:12,829 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:44:12,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 222 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:13,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:13,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258349871] [2025-03-08 04:44:13,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258349871] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:13,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85243618] [2025-03-08 04:44:13,072 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:44:13,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:13,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:13,074 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:13,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2025-03-08 04:44:13,140 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-03-08 04:44:13,157 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:13,157 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:44:13,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:13,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:13,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 222 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:13,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 222 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:13,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85243618] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:13,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:13,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 52 [2025-03-08 04:44:13,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768634381] [2025-03-08 04:44:13,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:13,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-03-08 04:44:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:13,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-03-08 04:44:13,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=2153, Unknown=0, NotChecked=0, Total=2652 [2025-03-08 04:44:13,770 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 52 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:14,148 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2025-03-08 04:44:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:14,149 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 52 states have internal predecessors, (105), 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 57 [2025-03-08 04:44:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:14,149 INFO L225 Difference]: With dead ends: 148 [2025-03-08 04:44:14,149 INFO L226 Difference]: Without dead ends: 106 [2025-03-08 04:44:14,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 65 SyntacticMatches, 26 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=499, Invalid=2153, Unknown=0, NotChecked=0, Total=2652 [2025-03-08 04:44:14,150 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:14,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-03-08 04:44:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 71. [2025-03-08 04:44:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:14,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:14,219 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:14,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:14,219 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:14,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 52 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:14,219 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:14,219 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:14,219 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:14,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2025-03-08 04:44:14,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:14,419 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:14,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:14,420 INFO L85 PathProgramCache]: Analyzing trace with hash 904157675, now seen corresponding path program 59 times [2025-03-08 04:44:14,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:14,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386126042] [2025-03-08 04:44:14,420 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:44:14,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:14,424 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:14,429 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:14,429 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-03-08 04:44:14,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 222 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:14,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386126042] [2025-03-08 04:44:14,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386126042] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499659118] [2025-03-08 04:44:14,676 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:44:14,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:14,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:14,678 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:14,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2025-03-08 04:44:14,745 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:14,765 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:14,765 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-03-08 04:44:14,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:14,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:14,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 222 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:15,181 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 222 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:15,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499659118] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:15,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:15,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 51 [2025-03-08 04:44:15,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936202662] [2025-03-08 04:44:15,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:15,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-03-08 04:44:15,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:15,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-03-08 04:44:15,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=2077, Unknown=0, NotChecked=0, Total=2550 [2025-03-08 04:44:15,377 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 51 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 51 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:15,773 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2025-03-08 04:44:15,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:15,774 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 51 states have internal predecessors, (104), 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 57 [2025-03-08 04:44:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:15,774 INFO L225 Difference]: With dead ends: 152 [2025-03-08 04:44:15,774 INFO L226 Difference]: Without dead ends: 110 [2025-03-08 04:44:15,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 66 SyntacticMatches, 26 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=473, Invalid=2077, Unknown=0, NotChecked=0, Total=2550 [2025-03-08 04:44:15,775 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:15,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-03-08 04:44:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 71. [2025-03-08 04:44:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:15,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:15,844 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:15,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:15,844 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:15,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 51 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:15,844 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:15,844 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:15,844 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:15,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2025-03-08 04:44:16,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:16,045 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:16,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:16,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1865979339, now seen corresponding path program 60 times [2025-03-08 04:44:16,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:16,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554322707] [2025-03-08 04:44:16,045 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:44:16,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:16,049 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:16,055 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:16,055 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-08 04:44:16,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 188 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:16,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:16,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554322707] [2025-03-08 04:44:16,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554322707] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:16,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694776579] [2025-03-08 04:44:16,299 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:44:16,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:16,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:16,301 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:16,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2025-03-08 04:44:16,369 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:16,396 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:16,396 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-08 04:44:16,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:16,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:16,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 222 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:16,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 222 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:17,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694776579] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:17,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:17,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 53 [2025-03-08 04:44:17,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930567159] [2025-03-08 04:44:17,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:17,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-08 04:44:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:17,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-08 04:44:17,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=2276, Unknown=0, NotChecked=0, Total=2756 [2025-03-08 04:44:17,020 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:17,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:17,438 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2025-03-08 04:44:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:17,439 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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 57 [2025-03-08 04:44:17,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:17,439 INFO L225 Difference]: With dead ends: 154 [2025-03-08 04:44:17,439 INFO L226 Difference]: Without dead ends: 112 [2025-03-08 04:44:17,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 66 SyntacticMatches, 24 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=485, Invalid=2377, Unknown=0, NotChecked=0, Total=2862 [2025-03-08 04:44:17,440 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:17,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-08 04:44:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 71. [2025-03-08 04:44:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:17,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:17,510 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:17,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:17,510 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:17,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:17,511 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:17,511 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:17,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2025-03-08 04:44:17,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2025-03-08 04:44:17,712 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:17,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:17,712 INFO L85 PathProgramCache]: Analyzing trace with hash 511532523, now seen corresponding path program 61 times [2025-03-08 04:44:17,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:17,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574348308] [2025-03-08 04:44:17,712 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:44:17,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:17,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-08 04:44:17,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:17,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:44:17,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 188 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:17,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:17,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574348308] [2025-03-08 04:44:17,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574348308] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:17,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594460116] [2025-03-08 04:44:17,959 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:44:17,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:17,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:17,961 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:17,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2025-03-08 04:44:18,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-08 04:44:18,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:18,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:44:18,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:18,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:18,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 222 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:18,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 222 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:18,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594460116] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:18,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:18,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 52 [2025-03-08 04:44:18,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651036644] [2025-03-08 04:44:18,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:18,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-03-08 04:44:18,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:18,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-03-08 04:44:18,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2191, Unknown=0, NotChecked=0, Total=2652 [2025-03-08 04:44:18,649 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 52 states, 52 states have (on average 2.1538461538461537) internal successors, (112), 52 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:19,072 INFO L93 Difference]: Finished difference Result 155 states and 170 transitions. [2025-03-08 04:44:19,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:19,072 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.1538461538461537) internal successors, (112), 52 states have internal predecessors, (112), 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 57 [2025-03-08 04:44:19,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:19,073 INFO L225 Difference]: With dead ends: 155 [2025-03-08 04:44:19,073 INFO L226 Difference]: Without dead ends: 113 [2025-03-08 04:44:19,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 67 SyntacticMatches, 24 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=466, Invalid=2290, Unknown=0, NotChecked=0, Total=2756 [2025-03-08 04:44:19,074 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:19,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-03-08 04:44:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 71. [2025-03-08 04:44:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:19,144 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:19,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:19,144 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:19,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.1538461538461537) internal successors, (112), 52 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:19,144 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:19,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:19,144 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:19,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2025-03-08 04:44:19,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:19,345 INFO L396 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:19,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:19,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1299124683, now seen corresponding path program 62 times [2025-03-08 04:44:19,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:19,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941913539] [2025-03-08 04:44:19,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:44:19,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:19,349 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-08 04:44:19,352 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:19,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:44:19,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 188 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:19,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:19,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941913539] [2025-03-08 04:44:19,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941913539] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:19,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765687169] [2025-03-08 04:44:19,598 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:44:19,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:19,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:19,600 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:19,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2025-03-08 04:44:19,670 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-08 04:44:19,685 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:19,685 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:44:19,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:19,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:19,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 222 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:20,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 222 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:20,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765687169] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:20,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:20,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 51 [2025-03-08 04:44:20,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524060218] [2025-03-08 04:44:20,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:20,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-03-08 04:44:20,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:20,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-03-08 04:44:20,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2104, Unknown=0, NotChecked=0, Total=2550 [2025-03-08 04:44:20,290 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 51 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:20,767 INFO L93 Difference]: Finished difference Result 155 states and 170 transitions. [2025-03-08 04:44:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:20,767 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 51 states have internal predecessors, (111), 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 57 [2025-03-08 04:44:20,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:20,768 INFO L225 Difference]: With dead ends: 155 [2025-03-08 04:44:20,768 INFO L226 Difference]: Without dead ends: 113 [2025-03-08 04:44:20,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 68 SyntacticMatches, 24 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1557 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=451, Invalid=2201, Unknown=0, NotChecked=0, Total=2652 [2025-03-08 04:44:20,768 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:20,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-03-08 04:44:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 71. [2025-03-08 04:44:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:20,838 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:20,838 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:20,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 51 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:20,839 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:20,839 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:20,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2025-03-08 04:44:21,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:21,039 INFO L396 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:21,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:21,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1584963093, now seen corresponding path program 63 times [2025-03-08 04:44:21,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:21,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287828193] [2025-03-08 04:44:21,040 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:44:21,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:21,043 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:21,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:21,048 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-08 04:44:21,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 188 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:21,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:21,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287828193] [2025-03-08 04:44:21,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287828193] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:21,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403157629] [2025-03-08 04:44:21,290 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:44:21,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:21,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:21,292 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:21,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2025-03-08 04:44:21,362 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:21,381 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:21,381 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-08 04:44:21,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:21,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:21,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 222 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:21,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 222 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:21,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403157629] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:21,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:21,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 50 [2025-03-08 04:44:21,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315289219] [2025-03-08 04:44:21,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:21,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-03-08 04:44:21,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:21,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-03-08 04:44:21,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=2015, Unknown=0, NotChecked=0, Total=2450 [2025-03-08 04:44:21,968 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 50 states, 50 states have (on average 2.2) internal successors, (110), 50 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:22,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:22,406 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2025-03-08 04:44:22,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:22,406 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.2) internal successors, (110), 50 states have internal predecessors, (110), 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 57 [2025-03-08 04:44:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:22,407 INFO L225 Difference]: With dead ends: 153 [2025-03-08 04:44:22,407 INFO L226 Difference]: Without dead ends: 111 [2025-03-08 04:44:22,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 69 SyntacticMatches, 24 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=440, Invalid=2110, Unknown=0, NotChecked=0, Total=2550 [2025-03-08 04:44:22,407 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:22,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:22,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2025-03-08 04:44:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 71. [2025-03-08 04:44:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:22,483 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:22,483 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:22,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.2) internal successors, (110), 50 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:22,484 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:22,484 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:22,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2025-03-08 04:44:22,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2025-03-08 04:44:22,684 INFO L396 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:22,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash -15430197, now seen corresponding path program 64 times [2025-03-08 04:44:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050497669] [2025-03-08 04:44:22,685 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:44:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:22,689 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-03-08 04:44:22,693 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:22,693 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:44:22,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 222 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:22,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:22,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050497669] [2025-03-08 04:44:22,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050497669] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:22,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366332603] [2025-03-08 04:44:22,928 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:44:22,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:22,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:22,930 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:22,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2025-03-08 04:44:23,000 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-03-08 04:44:23,016 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:23,016 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:44:23,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:23,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:23,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 222 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:23,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 222 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:23,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366332603] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:23,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:23,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 46 [2025-03-08 04:44:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968139472] [2025-03-08 04:44:23,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:23,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-08 04:44:23,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:23,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-08 04:44:23,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1667, Unknown=0, NotChecked=0, Total=2070 [2025-03-08 04:44:23,565 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:23,954 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2025-03-08 04:44:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:23,955 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 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 57 [2025-03-08 04:44:23,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:23,955 INFO L225 Difference]: With dead ends: 149 [2025-03-08 04:44:23,955 INFO L226 Difference]: Without dead ends: 107 [2025-03-08 04:44:23,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 71 SyntacticMatches, 26 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=403, Invalid=1667, Unknown=0, NotChecked=0, Total=2070 [2025-03-08 04:44:23,956 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:23,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:23,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-03-08 04:44:24,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 71. [2025-03-08 04:44:24,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:24,029 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:24,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:24,029 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:24,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:24,029 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:24,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:24,029 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:24,029 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:24,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2025-03-08 04:44:24,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:24,230 INFO L396 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:24,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1488820757, now seen corresponding path program 65 times [2025-03-08 04:44:24,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:24,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436710708] [2025-03-08 04:44:24,230 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:44:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:24,234 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:24,239 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:24,239 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-03-08 04:44:24,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 222 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:24,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:24,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436710708] [2025-03-08 04:44:24,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436710708] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:24,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476257884] [2025-03-08 04:44:24,491 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:44:24,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:24,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:24,493 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:24,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2025-03-08 04:44:24,565 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:24,585 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:24,585 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-03-08 04:44:24,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:24,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:24,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 222 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:24,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 222 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476257884] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:25,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:25,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 45 [2025-03-08 04:44:25,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223838663] [2025-03-08 04:44:25,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:25,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-08 04:44:25,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:25,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-08 04:44:25,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1579, Unknown=0, NotChecked=0, Total=1980 [2025-03-08 04:44:25,118 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 45 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 45 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:25,467 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2025-03-08 04:44:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:25,467 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 45 states have internal predecessors, (98), 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 57 [2025-03-08 04:44:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:25,468 INFO L225 Difference]: With dead ends: 143 [2025-03-08 04:44:25,468 INFO L226 Difference]: Without dead ends: 101 [2025-03-08 04:44:25,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 72 SyntacticMatches, 26 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=401, Invalid=1579, Unknown=0, NotChecked=0, Total=1980 [2025-03-08 04:44:25,468 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:25,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-03-08 04:44:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2025-03-08 04:44:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:25,543 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:25,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:25,543 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:25,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 45 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:25,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:25,543 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:25,543 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:25,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2025-03-08 04:44:25,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:25,744 INFO L396 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:25,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1813444149, now seen corresponding path program 66 times [2025-03-08 04:44:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:25,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632622144] [2025-03-08 04:44:25,744 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:44:25,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:25,748 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:25,754 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:25,754 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-08 04:44:25,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 188 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:26,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:26,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632622144] [2025-03-08 04:44:26,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632622144] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:26,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081746171] [2025-03-08 04:44:26,016 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:44:26,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:26,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:26,018 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:26,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2025-03-08 04:44:26,090 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:26,113 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:26,114 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-08 04:44:26,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:26,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:26,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 222 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:26,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 222 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:26,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081746171] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:26,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:26,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 47 [2025-03-08 04:44:26,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729686319] [2025-03-08 04:44:26,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:26,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-03-08 04:44:26,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:26,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-03-08 04:44:26,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=1736, Unknown=0, NotChecked=0, Total=2162 [2025-03-08 04:44:26,674 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 47 states, 47 states have (on average 2.276595744680851) internal successors, (107), 47 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:26,998 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2025-03-08 04:44:26,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:26,999 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.276595744680851) internal successors, (107), 47 states have internal predecessors, (107), 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 57 [2025-03-08 04:44:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:27,000 INFO L225 Difference]: With dead ends: 135 [2025-03-08 04:44:27,000 INFO L226 Difference]: Without dead ends: 93 [2025-03-08 04:44:27,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 24 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=431, Invalid=1825, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 04:44:27,000 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:27,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:27,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-03-08 04:44:27,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 71. [2025-03-08 04:44:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2025-03-08 04:44:27,074 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 57 [2025-03-08 04:44:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:27,074 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2025-03-08 04:44:27,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.276595744680851) internal successors, (107), 47 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2025-03-08 04:44:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 04:44:27,074 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:27,074 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:27,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2025-03-08 04:44:27,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2025-03-08 04:44:27,275 INFO L396 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:27,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:27,275 INFO L85 PathProgramCache]: Analyzing trace with hash 669936107, now seen corresponding path program 12 times [2025-03-08 04:44:27,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:27,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206871862] [2025-03-08 04:44:27,275 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:44:27,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:27,279 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:27,284 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:27,284 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-08 04:44:27,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 188 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:27,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:27,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206871862] [2025-03-08 04:44:27,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206871862] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:27,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155262260] [2025-03-08 04:44:27,534 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:44:27,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:27,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:27,536 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:27,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2025-03-08 04:44:27,610 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 13 equivalence classes. [2025-03-08 04:44:27,630 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 04:44:27,630 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-08 04:44:27,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:27,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:44:27,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:27,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:28,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155262260] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:28,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:28,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 46 [2025-03-08 04:44:28,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570099815] [2025-03-08 04:44:28,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:28,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-08 04:44:28,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:28,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-08 04:44:28,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=1639, Unknown=0, NotChecked=0, Total=2070 [2025-03-08 04:44:28,189 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:28,451 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2025-03-08 04:44:28,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 04:44:28,451 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 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 57 [2025-03-08 04:44:28,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:28,452 INFO L225 Difference]: With dead ends: 126 [2025-03-08 04:44:28,452 INFO L226 Difference]: Without dead ends: 84 [2025-03-08 04:44:28,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 73 SyntacticMatches, 24 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=436, Invalid=1726, Unknown=0, NotChecked=0, Total=2162 [2025-03-08 04:44:28,452 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:28,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:28,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-03-08 04:44:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2025-03-08 04:44:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 71 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2025-03-08 04:44:28,526 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 57 [2025-03-08 04:44:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:28,526 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2025-03-08 04:44:28,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2025-03-08 04:44:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-08 04:44:28,527 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:28,527 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:28,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2025-03-08 04:44:28,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2025-03-08 04:44:28,727 INFO L396 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:28,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash -790376871, now seen corresponding path program 24 times [2025-03-08 04:44:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:28,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662257882] [2025-03-08 04:44:28,728 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:44:28,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:28,731 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 13 equivalence classes. [2025-03-08 04:44:28,737 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 58 of 58 statements. [2025-03-08 04:44:28,737 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-08 04:44:28,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 78 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:28,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:28,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662257882] [2025-03-08 04:44:28,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662257882] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:28,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422289854] [2025-03-08 04:44:28,884 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:44:28,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:28,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:28,886 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:28,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2025-03-08 04:44:28,960 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 13 equivalence classes. [2025-03-08 04:44:28,980 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 58 of 58 statements. [2025-03-08 04:44:28,980 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-08 04:44:28,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:28,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 04:44:28,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:29,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:29,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422289854] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:29,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:29,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2025-03-08 04:44:29,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527947212] [2025-03-08 04:44:29,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:29,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 04:44:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:29,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 04:44:29,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2025-03-08 04:44:29,178 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:29,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:29,402 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2025-03-08 04:44:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-08 04:44:29,402 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 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 58 [2025-03-08 04:44:29,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:29,403 INFO L225 Difference]: With dead ends: 83 [2025-03-08 04:44:29,403 INFO L226 Difference]: Without dead ends: 81 [2025-03-08 04:44:29,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 100 SyntacticMatches, 26 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:44:29,403 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:29,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 101 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-03-08 04:44:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2025-03-08 04:44:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 74 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2025-03-08 04:44:29,479 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 58 [2025-03-08 04:44:29,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:29,479 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2025-03-08 04:44:29,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2025-03-08 04:44:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-08 04:44:29,479 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:29,479 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:29,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2025-03-08 04:44:29,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2025-03-08 04:44:29,680 INFO L396 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:29,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1105806255, now seen corresponding path program 25 times [2025-03-08 04:44:29,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:29,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748087427] [2025-03-08 04:44:29,680 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:44:29,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:29,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-08 04:44:29,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-08 04:44:29,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:44:29,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 223 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:29,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748087427] [2025-03-08 04:44:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748087427] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051938920] [2025-03-08 04:44:29,983 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:44:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:29,985 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:29,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2025-03-08 04:44:30,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-08 04:44:30,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-08 04:44:30,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:44:30,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:30,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 04:44:30,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:30,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:30,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051938920] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:30,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:30,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2025-03-08 04:44:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850988468] [2025-03-08 04:44:30,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:30,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-03-08 04:44:30,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:30,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-03-08 04:44:30,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=3057, Unknown=0, NotChecked=0, Total=3782 [2025-03-08 04:44:30,872 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 62 states, 62 states have (on average 2.0161290322580645) internal successors, (125), 62 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:31,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:31,140 INFO L93 Difference]: Finished difference Result 133 states and 149 transitions. [2025-03-08 04:44:31,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-08 04:44:31,140 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.0161290322580645) internal successors, (125), 62 states have internal predecessors, (125), 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 61 [2025-03-08 04:44:31,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:31,141 INFO L225 Difference]: With dead ends: 133 [2025-03-08 04:44:31,141 INFO L226 Difference]: Without dead ends: 88 [2025-03-08 04:44:31,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 65 SyntacticMatches, 26 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2624 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=730, Invalid=3176, Unknown=0, NotChecked=0, Total=3906 [2025-03-08 04:44:31,141 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:31,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-03-08 04:44:31,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2025-03-08 04:44:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 75 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2025-03-08 04:44:31,231 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 61 [2025-03-08 04:44:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:31,231 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2025-03-08 04:44:31,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.0161290322580645) internal successors, (125), 62 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2025-03-08 04:44:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-08 04:44:31,231 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:31,231 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:31,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2025-03-08 04:44:31,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:31,432 INFO L396 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:31,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash -455010255, now seen corresponding path program 67 times [2025-03-08 04:44:31,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:31,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968939762] [2025-03-08 04:44:31,432 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:44:31,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:31,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-08 04:44:31,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-08 04:44:31,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:44:31,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 223 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:31,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968939762] [2025-03-08 04:44:31,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968939762] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:31,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496985849] [2025-03-08 04:44:31,735 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:44:31,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:31,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:31,737 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:31,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2025-03-08 04:44:31,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-08 04:44:31,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-08 04:44:31,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:44:31,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:31,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 04:44:31,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 260 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:32,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 260 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:32,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496985849] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:32,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:32,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2025-03-08 04:44:32,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497452099] [2025-03-08 04:44:32,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:32,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-03-08 04:44:32,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:32,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-03-08 04:44:32,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=2977, Unknown=0, NotChecked=0, Total=3660 [2025-03-08 04:44:32,597 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 61 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 61 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:32,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:44:32,955 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2025-03-08 04:44:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-08 04:44:32,955 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 61 states have internal predecessors, (125), 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 61 [2025-03-08 04:44:32,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:44:32,956 INFO L225 Difference]: With dead ends: 144 [2025-03-08 04:44:32,956 INFO L226 Difference]: Without dead ends: 99 [2025-03-08 04:44:32,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 66 SyntacticMatches, 26 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2552 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=688, Invalid=3094, Unknown=0, NotChecked=0, Total=3782 [2025-03-08 04:44:32,956 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:44:32,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:44:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-03-08 04:44:33,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2025-03-08 04:44:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 75 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2025-03-08 04:44:33,049 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 61 [2025-03-08 04:44:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:44:33,049 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2025-03-08 04:44:33,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 61 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:44:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2025-03-08 04:44:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-08 04:44:33,050 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:44:33,050 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:44:33,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2025-03-08 04:44:33,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2025-03-08 04:44:33,250 INFO L396 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:44:33,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:44:33,251 INFO L85 PathProgramCache]: Analyzing trace with hash 258719825, now seen corresponding path program 68 times [2025-03-08 04:44:33,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:44:33,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484780635] [2025-03-08 04:44:33,251 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:44:33,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:44:33,255 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-03-08 04:44:33,258 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-03-08 04:44:33,258 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:44:33,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 223 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:33,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:44:33,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484780635] [2025-03-08 04:44:33,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484780635] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:44:33,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433009802] [2025-03-08 04:44:33,549 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:44:33,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:44:33,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:44:33,551 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:44:33,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2025-03-08 04:44:33,627 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-03-08 04:44:33,643 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-03-08 04:44:33,643 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:44:33,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:44:33,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 04:44:33,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:44:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 260 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:34,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:44:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 260 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:44:34,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433009802] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:44:34,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:44:34,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 60 [2025-03-08 04:44:34,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801624293] [2025-03-08 04:44:34,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:44:34,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-03-08 04:44:34,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:44:34,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-03-08 04:44:34,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=2895, Unknown=0, NotChecked=0, Total=3540 [2025-03-08 04:44:34,385 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 60 states, 60 states have (on average 2.066666666666667) internal successors, (124), 60 states have internal predecessors, (124), 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)