./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/divmul_diverge.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/divmul_diverge.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ffdc119181aa2456330d740041ecbf5eb23a58830499150b547bc21d0f8f549 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 15:52:17,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:52:17,519 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 15:52:17,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:52:17,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:52:17,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:52:17,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:52:17,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:52:17,552 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:52:17,552 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:52:17,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:52:17,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:52:17,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:52:17,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:52:17,553 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:52:17,554 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:52:17,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:52:17,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:52:17,554 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 -> 6ffdc119181aa2456330d740041ecbf5eb23a58830499150b547bc21d0f8f549 [2025-03-16 15:52:17,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:52:17,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:52:17,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:52:17,780 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:52:17,780 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:52:17,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/divmul_diverge.c [2025-03-16 15:52:18,886 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cbbc29de/e5af400a2c4840298b476a8dda6e9f23/FLAGdd0e60b27 [2025-03-16 15:52:19,115 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:52:19,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/divmul_diverge.c [2025-03-16 15:52:19,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cbbc29de/e5af400a2c4840298b476a8dda6e9f23/FLAGdd0e60b27 [2025-03-16 15:52:19,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cbbc29de/e5af400a2c4840298b476a8dda6e9f23 [2025-03-16 15:52:19,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:52:19,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:52:19,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:52:19,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:52:19,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:52:19,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112b1fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19, skipping insertion in model container [2025-03-16 15:52:19,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,477 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:52:19,580 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/float-benchs/divmul_diverge.c[613,626] [2025-03-16 15:52:19,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:52:19,603 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:52:19,610 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/float-benchs/divmul_diverge.c[613,626] [2025-03-16 15:52:19,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:52:19,624 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:52:19,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19 WrapperNode [2025-03-16 15:52:19,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:52:19,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:52:19,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:52:19,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:52:19,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,650 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 41 [2025-03-16 15:52:19,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:52:19,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:52:19,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:52:19,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:52:19,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,657 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,663 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 15:52:19,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,669 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:52:19,675 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:52:19,675 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:52:19,675 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:52:19,675 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (1/1) ... [2025-03-16 15:52:19,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:52:19,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:52:19,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 15:52:19,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 15:52:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:52:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 15:52:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:52:19,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:52:19,756 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:52:19,758 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:52:19,823 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-16 15:52:19,823 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:52:19,828 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:52:19,828 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:52:19,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:52:19 BoogieIcfgContainer [2025-03-16 15:52:19,829 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:52:19,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:52:19,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:52:19,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:52:19,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:52:19" (1/3) ... [2025-03-16 15:52:19,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c87aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:52:19, skipping insertion in model container [2025-03-16 15:52:19,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:52:19" (2/3) ... [2025-03-16 15:52:19,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c87aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:52:19, skipping insertion in model container [2025-03-16 15:52:19,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:52:19" (3/3) ... [2025-03-16 15:52:19,837 INFO L128 eAbstractionObserver]: Analyzing ICFG divmul_diverge.c [2025-03-16 15:52:19,847 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:52:19,850 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG divmul_diverge.c that has 1 procedures, 12 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 15:52:19,889 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:52:19,899 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;@3f66b447, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:52:19,899 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:52:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-16 15:52:19,906 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:52:19,907 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-16 15:52:19,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:52:19,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:52:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1315704, now seen corresponding path program 1 times [2025-03-16 15:52:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:52:19,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373192976] [2025-03-16 15:52:19,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:52:19,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:52:19,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-16 15:52:19,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-16 15:52:19,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:52:19,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:20,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:52:20,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373192976] [2025-03-16 15:52:20,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373192976] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:52:20,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:52:20,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:52:20,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229600603] [2025-03-16 15:52:20,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:52:20,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:52:20,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:52:20,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:52:20,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:52:20,053 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:20,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:52:20,071 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2025-03-16 15:52:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:52:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2025-03-16 15:52:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:52:20,078 INFO L225 Difference]: With dead ends: 28 [2025-03-16 15:52:20,078 INFO L226 Difference]: Without dead ends: 14 [2025-03-16 15:52:20,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:52:20,083 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:52:20,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:52:20,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-16 15:52:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2025-03-16 15:52:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2025-03-16 15:52:20,105 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2025-03-16 15:52:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:52:20,106 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2025-03-16 15:52:20,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2025-03-16 15:52:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-16 15:52:20,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:52:20,106 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:52:20,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 15:52:20,107 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:52:20,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:52:20,107 INFO L85 PathProgramCache]: Analyzing trace with hash 749348489, now seen corresponding path program 1 times [2025-03-16 15:52:20,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:52:20,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103251896] [2025-03-16 15:52:20,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:52:20,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:52:20,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 15:52:20,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 15:52:20,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:52:20,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:20,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:52:20,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103251896] [2025-03-16 15:52:20,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103251896] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:52:20,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110631143] [2025-03-16 15:52:20,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:52:20,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:52:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:52:20,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 15:52:20,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 15:52:20,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 15:52:20,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 15:52:20,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:52:20,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:20,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 15:52:20,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:52:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:20,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:52:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:20,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110631143] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:52:20,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:52:20,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-03-16 15:52:20,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950565324] [2025-03-16 15:52:20,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:52:20,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 15:52:20,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:52:20,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 15:52:20,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:52:20,260 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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) [2025-03-16 15:52:20,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:52:20,279 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2025-03-16 15:52:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 15:52:20,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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) Word has length 7 [2025-03-16 15:52:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:52:20,280 INFO L225 Difference]: With dead ends: 28 [2025-03-16 15:52:20,280 INFO L226 Difference]: Without dead ends: 25 [2025-03-16 15:52:20,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:52:20,281 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:52:20,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:52:20,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-16 15:52:20,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-16 15:52:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 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) [2025-03-16 15:52:20,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2025-03-16 15:52:20,284 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 7 [2025-03-16 15:52:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:52:20,284 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2025-03-16 15:52:20,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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) [2025-03-16 15:52:20,285 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2025-03-16 15:52:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-16 15:52:20,285 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:52:20,285 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1] [2025-03-16 15:52:20,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 15:52:20,485 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 [2025-03-16 15:52:20,486 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:52:20,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:52:20,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2134147128, now seen corresponding path program 2 times [2025-03-16 15:52:20,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:52:20,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177014491] [2025-03-16 15:52:20,486 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 15:52:20,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:52:20,494 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-16 15:52:20,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-16 15:52:20,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 15:52:20,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:20,596 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:20,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:52:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177014491] [2025-03-16 15:52:20,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177014491] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:52:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354502651] [2025-03-16 15:52:20,596 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 15:52:20,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:52:20,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:52:20,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 15:52:20,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 15:52:20,625 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-16 15:52:20,634 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-16 15:52:20,634 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 15:52:20,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:20,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 15:52:20,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:52:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:20,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:52:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:20,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354502651] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:52:20,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:52:20,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-03-16 15:52:20,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031528539] [2025-03-16 15:52:20,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:52:20,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 15:52:20,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:52:20,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 15:52:20,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-16 15:52:20,746 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:20,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:52:20,794 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2025-03-16 15:52:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 15:52:20,794 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-03-16 15:52:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:52:20,795 INFO L225 Difference]: With dead ends: 58 [2025-03-16 15:52:20,795 INFO L226 Difference]: Without dead ends: 55 [2025-03-16 15:52:20,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-16 15:52:20,796 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 61 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:52:20,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 54 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:52:20,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-03-16 15:52:20,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2025-03-16 15:52:20,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 54 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) [2025-03-16 15:52:20,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2025-03-16 15:52:20,800 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 16 [2025-03-16 15:52:20,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:52:20,800 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2025-03-16 15:52:20,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:20,801 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2025-03-16 15:52:20,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-16 15:52:20,801 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:52:20,801 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1] [2025-03-16 15:52:20,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 15:52:21,006 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 [2025-03-16 15:52:21,006 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:52:21,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:52:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1173456728, now seen corresponding path program 3 times [2025-03-16 15:52:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:52:21,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997108661] [2025-03-16 15:52:21,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 15:52:21,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:52:21,013 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 11 equivalence classes. [2025-03-16 15:52:21,029 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 34 of 34 statements. [2025-03-16 15:52:21,032 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-16 15:52:21,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:21,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:52:21,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997108661] [2025-03-16 15:52:21,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997108661] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:52:21,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217748071] [2025-03-16 15:52:21,211 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 15:52:21,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:52:21,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:52:21,213 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 15:52:21,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 15:52:21,242 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 11 equivalence classes. [2025-03-16 15:52:21,262 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 34 of 34 statements. [2025-03-16 15:52:21,263 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-16 15:52:21,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:21,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 15:52:21,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:52:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:21,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:52:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:21,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217748071] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:52:21,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:52:21,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2025-03-16 15:52:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98428097] [2025-03-16 15:52:21,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:52:21,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-16 15:52:21,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:52:21,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-16 15:52:21,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-16 15:52:21,558 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 25 states, 25 states have (on average 2.8) internal successors, (70), 24 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) [2025-03-16 15:52:21,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:52:21,635 INFO L93 Difference]: Finished difference Result 118 states and 151 transitions. [2025-03-16 15:52:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-16 15:52:21,635 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 24 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 34 [2025-03-16 15:52:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:52:21,636 INFO L225 Difference]: With dead ends: 118 [2025-03-16 15:52:21,636 INFO L226 Difference]: Without dead ends: 115 [2025-03-16 15:52:21,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-16 15:52:21,637 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 244 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:52:21,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 96 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 15:52:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-03-16 15:52:21,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2025-03-16 15:52:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.2017543859649122) internal successors, (137), 114 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2025-03-16 15:52:21,650 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 34 [2025-03-16 15:52:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:52:21,650 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2025-03-16 15:52:21,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 24 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) [2025-03-16 15:52:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2025-03-16 15:52:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-16 15:52:21,652 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:52:21,652 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1] [2025-03-16 15:52:21,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 15:52:21,852 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 [2025-03-16 15:52:21,852 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:52:21,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:52:21,853 INFO L85 PathProgramCache]: Analyzing trace with hash 224853400, now seen corresponding path program 4 times [2025-03-16 15:52:21,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:52:21,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168629831] [2025-03-16 15:52:21,853 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 15:52:21,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:52:21,862 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 70 statements into 2 equivalence classes. [2025-03-16 15:52:21,874 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-03-16 15:52:21,874 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 15:52:21,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:22,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:52:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168629831] [2025-03-16 15:52:22,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168629831] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:52:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451780836] [2025-03-16 15:52:22,343 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 15:52:22,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:52:22,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:52:22,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 15:52:22,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 15:52:22,381 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 70 statements into 2 equivalence classes. [2025-03-16 15:52:22,401 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-03-16 15:52:22,401 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 15:52:22,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:22,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-16 15:52:22,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:52:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:22,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:52:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:23,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451780836] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:52:23,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:52:23,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2025-03-16 15:52:23,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640073727] [2025-03-16 15:52:23,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:52:23,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-16 15:52:23,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:52:23,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-16 15:52:23,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-16 15:52:23,140 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand has 48 states, 48 states have (on average 2.875) internal successors, (138), 47 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:52:23,336 INFO L93 Difference]: Finished difference Result 238 states and 307 transitions. [2025-03-16 15:52:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-16 15:52:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.875) internal successors, (138), 47 states have internal predecessors, (138), 0 states have call successors, (0), 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 70 [2025-03-16 15:52:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:52:23,338 INFO L225 Difference]: With dead ends: 238 [2025-03-16 15:52:23,340 INFO L226 Difference]: Without dead ends: 235 [2025-03-16 15:52:23,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-16 15:52:23,342 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 460 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:52:23,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 196 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 15:52:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2025-03-16 15:52:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2025-03-16 15:52:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.2008547008547008) internal successors, (281), 234 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:23,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 281 transitions. [2025-03-16 15:52:23,357 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 281 transitions. Word has length 70 [2025-03-16 15:52:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:52:23,357 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 281 transitions. [2025-03-16 15:52:23,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.875) internal successors, (138), 47 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:23,357 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 281 transitions. [2025-03-16 15:52:23,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-16 15:52:23,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:52:23,360 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1] [2025-03-16 15:52:23,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 15:52:23,561 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 [2025-03-16 15:52:23,561 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:52:23,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:52:23,562 INFO L85 PathProgramCache]: Analyzing trace with hash -575174120, now seen corresponding path program 5 times [2025-03-16 15:52:23,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:52:23,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134302040] [2025-03-16 15:52:23,562 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 15:52:23,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:52:23,572 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 142 statements into 47 equivalence classes. [2025-03-16 15:52:23,602 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 15:52:23,602 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-16 15:52:23,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:24,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:52:24,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134302040] [2025-03-16 15:52:24,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134302040] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:52:24,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96174948] [2025-03-16 15:52:24,889 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 15:52:24,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:52:24,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:52:24,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 15:52:24,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 15:52:24,925 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 142 statements into 47 equivalence classes. [2025-03-16 15:52:24,964 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 15:52:24,964 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-16 15:52:24,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:24,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-16 15:52:24,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:52:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:25,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:52:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:27,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96174948] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:52:27,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:52:27,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2025-03-16 15:52:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518172154] [2025-03-16 15:52:27,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:52:27,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-03-16 15:52:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:52:27,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-03-16 15:52:27,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-16 15:52:27,065 INFO L87 Difference]: Start difference. First operand 235 states and 281 transitions. Second operand has 96 states, 96 states have (on average 2.9375) internal successors, (282), 95 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:52:27,893 INFO L93 Difference]: Finished difference Result 478 states and 619 transitions. [2025-03-16 15:52:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-16 15:52:27,894 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.9375) internal successors, (282), 95 states have internal predecessors, (282), 0 states have call successors, (0), 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 142 [2025-03-16 15:52:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:52:27,896 INFO L225 Difference]: With dead ends: 478 [2025-03-16 15:52:27,896 INFO L226 Difference]: Without dead ends: 475 [2025-03-16 15:52:27,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-16 15:52:27,898 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 1147 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:52:27,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 394 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 15:52:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-03-16 15:52:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2025-03-16 15:52:27,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.2004219409282701) internal successors, (569), 474 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 569 transitions. [2025-03-16 15:52:27,926 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 569 transitions. Word has length 142 [2025-03-16 15:52:27,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:52:27,926 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 569 transitions. [2025-03-16 15:52:27,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.9375) internal successors, (282), 95 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:27,926 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 569 transitions. [2025-03-16 15:52:27,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2025-03-16 15:52:27,931 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:52:27,931 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1] [2025-03-16 15:52:27,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 15:52:28,131 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 [2025-03-16 15:52:28,132 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:52:28,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:52:28,132 INFO L85 PathProgramCache]: Analyzing trace with hash 732898072, now seen corresponding path program 6 times [2025-03-16 15:52:28,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:52:28,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848019641] [2025-03-16 15:52:28,133 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 15:52:28,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:52:28,143 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 286 statements into 95 equivalence classes. [2025-03-16 15:52:28,236 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 286 of 286 statements. [2025-03-16 15:52:28,236 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-03-16 15:52:28,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:31,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:52:31,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848019641] [2025-03-16 15:52:31,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848019641] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:52:31,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535586889] [2025-03-16 15:52:31,912 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 15:52:31,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:52:31,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:52:31,914 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 15:52:31,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 15:52:31,955 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 286 statements into 95 equivalence classes. [2025-03-16 15:52:32,035 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 286 of 286 statements. [2025-03-16 15:52:32,036 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-03-16 15:52:32,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:52:32,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-03-16 15:52:32,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:52:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:32,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:52:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:52:39,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535586889] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:52:39,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:52:39,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 192 [2025-03-16 15:52:39,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046102940] [2025-03-16 15:52:39,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:52:39,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-03-16 15:52:39,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:52:39,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-03-16 15:52:39,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-16 15:52:39,112 INFO L87 Difference]: Start difference. First operand 475 states and 569 transitions. Second operand has 193 states, 193 states have (on average 2.9740932642487046) internal successors, (574), 192 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:52:49,983 INFO L93 Difference]: Finished difference Result 958 states and 1243 transitions. [2025-03-16 15:52:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-03-16 15:52:49,983 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.9740932642487046) internal successors, (574), 192 states have internal predecessors, (574), 0 states have call successors, (0), 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 286 [2025-03-16 15:52:49,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:52:49,986 INFO L225 Difference]: With dead ends: 958 [2025-03-16 15:52:49,986 INFO L226 Difference]: Without dead ends: 955 [2025-03-16 15:52:49,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-16 15:52:49,989 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 2353 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:52:49,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2353 Valid, 782 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 15:52:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2025-03-16 15:52:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 955. [2025-03-16 15:52:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 954 states have (on average 1.20020964360587) internal successors, (1145), 954 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1145 transitions. [2025-03-16 15:52:50,005 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1145 transitions. Word has length 286 [2025-03-16 15:52:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:52:50,005 INFO L471 AbstractCegarLoop]: Abstraction has 955 states and 1145 transitions. [2025-03-16 15:52:50,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.9740932642487046) internal successors, (574), 192 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:52:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1145 transitions. [2025-03-16 15:52:50,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2025-03-16 15:52:50,012 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:52:50,012 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 190, 1, 1, 1, 1] [2025-03-16 15:52:50,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 15:52:50,212 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 [2025-03-16 15:52:50,213 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:52:50,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:52:50,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2063095064, now seen corresponding path program 7 times [2025-03-16 15:52:50,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:52:50,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457308115] [2025-03-16 15:52:50,213 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-16 15:52:50,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:52:50,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 574 statements into 1 equivalence classes. [2025-03-16 15:52:50,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 574 of 574 statements. [2025-03-16 15:52:50,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:52:50,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:53:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 54055 backedges. 0 proven. 54055 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:53:04,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:53:04,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457308115] [2025-03-16 15:53:04,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457308115] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:53:04,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285826155] [2025-03-16 15:53:04,274 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-16 15:53:04,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:53:04,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:53:04,275 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) [2025-03-16 15:53:04,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 15:53:04,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 574 statements into 1 equivalence classes. [2025-03-16 15:53:04,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 574 of 574 statements. [2025-03-16 15:53:04,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:53:04,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:53:04,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 192 conjuncts are in the unsatisfiable core [2025-03-16 15:53:04,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:53:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 54055 backedges. 0 proven. 54055 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:53:04,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:53:31,364 INFO L134 CoverageAnalysis]: Checked inductivity of 54055 backedges. 0 proven. 54055 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:53:31,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285826155] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:53:31,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:53:31,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 384 [2025-03-16 15:53:31,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786843532] [2025-03-16 15:53:31,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:53:31,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2025-03-16 15:53:31,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:53:31,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2025-03-16 15:53:31,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2025-03-16 15:53:31,383 INFO L87 Difference]: Start difference. First operand 955 states and 1145 transitions. Second operand has 385 states, 385 states have (on average 2.987012987012987) internal successors, (1150), 384 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)