./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.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/loop-invariants/linear-inequality-inv-c.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 98c9a7161a25877cb0d3946df13d012bfde80051390422e2e164abf2e04cd600 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 17:58:27,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 17:58:27,273 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 17:58:27,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 17:58:27,277 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 17:58:27,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 17:58:27,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 17:58:27,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 17:58:27,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 17:58:27,294 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 17:58:27,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 17:58:27,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 17:58:27,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 17:58:27,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 17:58:27,298 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 17:58:27,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 17:58:27,299 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:58:27,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 17:58:27,299 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 17:58:27,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 17:58:27,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 17:58:27,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 17:58:27,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 17:58:27,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 17:58:27,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 17:58:27,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 17:58:27,300 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 -> 98c9a7161a25877cb0d3946df13d012bfde80051390422e2e164abf2e04cd600 [2025-03-16 17:58:27,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 17:58:27,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 17:58:27,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 17:58:27,530 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 17:58:27,530 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 17:58:27,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c [2025-03-16 17:58:28,665 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc0258f6f/6831fb23fd894df1b88c4bfe72c04260/FLAG6328661f5 [2025-03-16 17:58:28,843 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 17:58:28,844 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c [2025-03-16 17:58:28,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc0258f6f/6831fb23fd894df1b88c4bfe72c04260/FLAG6328661f5 [2025-03-16 17:58:28,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc0258f6f/6831fb23fd894df1b88c4bfe72c04260 [2025-03-16 17:58:28,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 17:58:28,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 17:58:28,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 17:58:28,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 17:58:28,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 17:58:28,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:58:28" (1/1) ... [2025-03-16 17:58:28,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de8961e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:28, skipping insertion in model container [2025-03-16 17:58:28,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:58:28" (1/1) ... [2025-03-16 17:58:28,883 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 17:58:28,978 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c[866,879] [2025-03-16 17:58:28,982 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c[945,958] [2025-03-16 17:58:28,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:58:28,989 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 17:58:28,997 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c[866,879] [2025-03-16 17:58:28,999 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c[945,958] [2025-03-16 17:58:28,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:58:29,012 INFO L204 MainTranslator]: Completed translation [2025-03-16 17:58:29,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29 WrapperNode [2025-03-16 17:58:29,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 17:58:29,013 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 17:58:29,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 17:58:29,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 17:58:29,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,031 INFO L138 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2025-03-16 17:58:29,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 17:58:29,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 17:58:29,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 17:58:29,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 17:58:29,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,050 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 17:58:29,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,051 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 17:58:29,055 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 17:58:29,055 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 17:58:29,055 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 17:58:29,056 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (1/1) ... [2025-03-16 17:58:29,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:58:29,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:29,080 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 17:58:29,083 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 17:58:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 17:58:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 17:58:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 17:58:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 17:58:29,136 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 17:58:29,138 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 17:58:29,235 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-16 17:58:29,235 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 17:58:29,241 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 17:58:29,241 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 17:58:29,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:58:29 BoogieIcfgContainer [2025-03-16 17:58:29,242 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 17:58:29,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 17:58:29,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 17:58:29,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 17:58:29,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 05:58:28" (1/3) ... [2025-03-16 17:58:29,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfbe2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:58:29, skipping insertion in model container [2025-03-16 17:58:29,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:58:29" (2/3) ... [2025-03-16 17:58:29,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfbe2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:58:29, skipping insertion in model container [2025-03-16 17:58:29,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:58:29" (3/3) ... [2025-03-16 17:58:29,249 INFO L128 eAbstractionObserver]: Analyzing ICFG linear-inequality-inv-c.c [2025-03-16 17:58:29,259 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 17:58:29,261 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linear-inequality-inv-c.c that has 1 procedures, 12 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-03-16 17:58:29,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 17:58:29,303 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;@4a856c13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 17:58:29,303 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 17:58:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.6666666666666667) 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 17:58:29,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-16 17:58:29,309 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:29,309 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-16 17:58:29,309 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:29,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:29,313 INFO L85 PathProgramCache]: Analyzing trace with hash 48633710, now seen corresponding path program 1 times [2025-03-16 17:58:29,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:29,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492386342] [2025-03-16 17:58:29,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:58:29,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:29,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-16 17:58:29,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-16 17:58:29,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:58:29,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:29,507 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 17:58:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492386342] [2025-03-16 17:58:29,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492386342] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:58:29,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:58:29,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 17:58:29,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542425757] [2025-03-16 17:58:29,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:58:29,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 17:58:29,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:58:29,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 17:58:29,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 17:58:29,525 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.6666666666666667) 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 17:58:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:58:29,540 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2025-03-16 17:58:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 17:58:29,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2025-03-16 17:58:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:58:29,545 INFO L225 Difference]: With dead ends: 22 [2025-03-16 17:58:29,545 INFO L226 Difference]: Without dead ends: 10 [2025-03-16 17:58:29,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 17:58:29,548 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 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 17:58:29,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 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 17:58:29,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-03-16 17:58:29,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2025-03-16 17:58:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2025-03-16 17:58:29,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2025-03-16 17:58:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:58:29,571 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2025-03-16 17:58:29,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 17:58:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2025-03-16 17:58:29,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-16 17:58:29,572 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:29,572 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-16 17:58:29,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 17:58:29,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:29,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:29,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1507618144, now seen corresponding path program 1 times [2025-03-16 17:58:29,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:29,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199768759] [2025-03-16 17:58:29,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:58:29,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:29,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-16 17:58:29,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-16 17:58:29,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:58:29,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:29,691 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 17:58:29,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:29,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199768759] [2025-03-16 17:58:29,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199768759] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:58:29,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012312927] [2025-03-16 17:58:29,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:58:29,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:29,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:29,693 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 17:58:29,694 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 17:58:29,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-16 17:58:29,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-16 17:58:29,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:58:29,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:29,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 17:58:29,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:58:29,747 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 17:58:29,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:58:29,922 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 17:58:29,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012312927] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:58:29,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:58:29,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-16 17:58:29,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000183670] [2025-03-16 17:58:29,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:58:29,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 17:58:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:58:29,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 17:58:29,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-16 17:58:29,925 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 17:58:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:58:29,981 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2025-03-16 17:58:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 17:58:29,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 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 6 [2025-03-16 17:58:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:58:29,981 INFO L225 Difference]: With dead ends: 19 [2025-03-16 17:58:29,981 INFO L226 Difference]: Without dead ends: 17 [2025-03-16 17:58:29,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2025-03-16 17:58:29,982 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:58:29,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:58:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-03-16 17:58:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2025-03-16 17:58:29,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 17:58:29,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2025-03-16 17:58:29,984 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2025-03-16 17:58:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:58:29,987 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2025-03-16 17:58:29,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 17:58:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2025-03-16 17:58:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-16 17:58:29,987 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:29,988 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:58:29,994 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 17:58:30,192 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 17:58:30,192 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:30,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:30,193 INFO L85 PathProgramCache]: Analyzing trace with hash -508476981, now seen corresponding path program 1 times [2025-03-16 17:58:30,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:30,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791530154] [2025-03-16 17:58:30,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:58:30,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:30,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 17:58:30,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 17:58:30,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:58:30,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:30,267 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 17:58:30,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:30,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791530154] [2025-03-16 17:58:30,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791530154] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:58:30,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902661322] [2025-03-16 17:58:30,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:58:30,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:30,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:30,270 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 17:58:30,271 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 17:58:30,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 17:58:30,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 17:58:30,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:58:30,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:30,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 17:58:30,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:58:30,311 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 17:58:30,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:58:30,343 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 17:58:30,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902661322] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:58:30,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:58:30,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2025-03-16 17:58:30,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519926523] [2025-03-16 17:58:30,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:58:30,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 17:58:30,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:58:30,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 17:58:30,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-16 17:58:30,344 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states 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 17:58:30,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:58:30,359 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2025-03-16 17:58:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 17:58:30,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 17:58:30,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:58:30,360 INFO L225 Difference]: With dead ends: 21 [2025-03-16 17:58:30,360 INFO L226 Difference]: Without dead ends: 13 [2025-03-16 17:58:30,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-16 17:58:30,361 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:58:30,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:58:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-03-16 17:58:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2025-03-16 17:58:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 17:58:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2025-03-16 17:58:30,365 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2025-03-16 17:58:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:58:30,365 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2025-03-16 17:58:30,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states 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 17:58:30,365 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2025-03-16 17:58:30,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-16 17:58:30,365 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:30,365 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2025-03-16 17:58:30,371 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 17:58:30,565 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 17:58:30,566 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:30,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 952435694, now seen corresponding path program 2 times [2025-03-16 17:58:30,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:30,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118953865] [2025-03-16 17:58:30,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:58:30,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:30,570 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 9 statements into 2 equivalence classes. [2025-03-16 17:58:30,577 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 9 of 9 statements. [2025-03-16 17:58:30,578 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:58:30,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:30,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:30,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118953865] [2025-03-16 17:58:30,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118953865] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:58:30,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083787138] [2025-03-16 17:58:30,702 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:58:30,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:30,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:30,705 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 17:58:30,706 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 17:58:30,726 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 9 statements into 2 equivalence classes. [2025-03-16 17:58:30,743 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 9 of 9 statements. [2025-03-16 17:58:30,743 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:58:30,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:30,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-16 17:58:30,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:58:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:30,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:58:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:30,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083787138] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:58:30,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:58:30,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-16 17:58:30,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784898952] [2025-03-16 17:58:30,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:58:30,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 17:58:30,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:58:30,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 17:58:30,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2025-03-16 17:58:30,953 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:31,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:58:31,082 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2025-03-16 17:58:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 17:58:31,082 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-16 17:58:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:58:31,083 INFO L225 Difference]: With dead ends: 33 [2025-03-16 17:58:31,083 INFO L226 Difference]: Without dead ends: 22 [2025-03-16 17:58:31,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=258, Unknown=0, NotChecked=0, Total=420 [2025-03-16 17:58:31,083 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:58:31,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 17 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:58:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-16 17:58:31,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-03-16 17:58:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2025-03-16 17:58:31,087 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2025-03-16 17:58:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:58:31,087 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2025-03-16 17:58:31,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2025-03-16 17:58:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-16 17:58:31,087 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:31,087 INFO L218 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1] [2025-03-16 17:58:31,093 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 17:58:31,292 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 17:58:31,292 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:31,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash 920412285, now seen corresponding path program 2 times [2025-03-16 17:58:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:31,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843654323] [2025-03-16 17:58:31,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:58:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:31,297 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-16 17:58:31,313 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-16 17:58:31,313 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:58:31,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:31,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843654323] [2025-03-16 17:58:31,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843654323] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:58:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979692914] [2025-03-16 17:58:31,542 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:58:31,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:31,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:31,546 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 17:58:31,547 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 17:58:31,569 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-16 17:58:31,584 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-16 17:58:31,584 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:58:31,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:31,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-16 17:58:31,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:58:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:31,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:58:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:31,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979692914] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:58:31,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:58:31,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 21 [2025-03-16 17:58:31,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633626691] [2025-03-16 17:58:31,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:58:31,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-16 17:58:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:58:31,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-16 17:58:31,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2025-03-16 17:58:31,907 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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 17:58:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:58:31,962 INFO L93 Difference]: Finished difference Result 49 states and 66 transitions. [2025-03-16 17:58:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-16 17:58:31,962 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-16 17:58:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:58:31,963 INFO L225 Difference]: With dead ends: 49 [2025-03-16 17:58:31,964 INFO L226 Difference]: Without dead ends: 35 [2025-03-16 17:58:31,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2025-03-16 17:58:31,965 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:58:31,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 24 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:58:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-03-16 17:58:31,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2025-03-16 17:58:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2025-03-16 17:58:31,971 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2025-03-16 17:58:31,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:58:31,971 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2025-03-16 17:58:31,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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 17:58:31,971 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2025-03-16 17:58:31,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-16 17:58:31,971 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:31,971 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2025-03-16 17:58:31,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 17:58:32,172 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 17:58:32,172 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:32,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:32,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1532875090, now seen corresponding path program 3 times [2025-03-16 17:58:32,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:32,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221004002] [2025-03-16 17:58:32,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 17:58:32,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:32,176 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 6 equivalence classes. [2025-03-16 17:58:32,193 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 15 of 15 statements. [2025-03-16 17:58:32,195 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-16 17:58:32,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:32,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:32,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221004002] [2025-03-16 17:58:32,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221004002] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:58:32,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197601583] [2025-03-16 17:58:32,459 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 17:58:32,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:32,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:32,461 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 17:58:32,463 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 17:58:32,482 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 6 equivalence classes. [2025-03-16 17:58:32,507 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 15 of 15 statements. [2025-03-16 17:58:32,507 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-16 17:58:32,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:32,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-16 17:58:32,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:58:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:32,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:58:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:32,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197601583] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:58:32,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:58:32,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-16 17:58:32,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769218665] [2025-03-16 17:58:32,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:58:32,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-16 17:58:32,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:58:32,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-16 17:58:32,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=350, Unknown=0, NotChecked=0, Total=600 [2025-03-16 17:58:32,905 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:58:33,247 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2025-03-16 17:58:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-16 17:58:33,248 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-03-16 17:58:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:58:33,248 INFO L225 Difference]: With dead ends: 50 [2025-03-16 17:58:33,248 INFO L226 Difference]: Without dead ends: 34 [2025-03-16 17:58:33,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=750, Invalid=1230, Unknown=0, NotChecked=0, Total=1980 [2025-03-16 17:58:33,250 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:58:33,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 26 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:58:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-03-16 17:58:33,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2025-03-16 17:58:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 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 17:58:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2025-03-16 17:58:33,254 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 15 [2025-03-16 17:58:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:58:33,254 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2025-03-16 17:58:33,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2025-03-16 17:58:33,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-16 17:58:33,255 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:33,255 INFO L218 NwaCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1] [2025-03-16 17:58:33,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 17:58:33,455 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 17:58:33,456 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:33,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:33,456 INFO L85 PathProgramCache]: Analyzing trace with hash 44862205, now seen corresponding path program 3 times [2025-03-16 17:58:33,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:33,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541474511] [2025-03-16 17:58:33,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 17:58:33,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:33,470 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 11 equivalence classes. [2025-03-16 17:58:33,500 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 26 of 26 statements. [2025-03-16 17:58:33,500 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-16 17:58:33,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:34,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:34,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541474511] [2025-03-16 17:58:34,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541474511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:58:34,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705612961] [2025-03-16 17:58:34,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 17:58:34,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:34,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:34,146 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 17:58:34,148 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 17:58:34,176 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 11 equivalence classes. [2025-03-16 17:58:34,252 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 26 of 26 statements. [2025-03-16 17:58:34,253 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-16 17:58:34,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:34,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-16 17:58:34,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:58:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:34,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:58:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:35,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705612961] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:58:35,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:58:35,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 45 [2025-03-16 17:58:35,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059522562] [2025-03-16 17:58:35,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:58:35,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-16 17:58:35,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:58:35,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-16 17:58:35,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2025-03-16 17:58:35,147 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 45 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:58:35,252 INFO L93 Difference]: Finished difference Result 97 states and 138 transitions. [2025-03-16 17:58:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-03-16 17:58:35,252 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-03-16 17:58:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:58:35,253 INFO L225 Difference]: With dead ends: 97 [2025-03-16 17:58:35,253 INFO L226 Difference]: Without dead ends: 71 [2025-03-16 17:58:35,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2025-03-16 17:58:35,254 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 112 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:58:35,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 39 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:58:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-03-16 17:58:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2025-03-16 17:58:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.44) internal successors, (72), 51 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:35,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2025-03-16 17:58:35,263 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 26 [2025-03-16 17:58:35,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:58:35,263 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2025-03-16 17:58:35,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2025-03-16 17:58:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-16 17:58:35,264 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:35,264 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1] [2025-03-16 17:58:35,270 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 17:58:35,467 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 17:58:35,467 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:35,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:35,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1389843502, now seen corresponding path program 4 times [2025-03-16 17:58:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:35,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172716047] [2025-03-16 17:58:35,468 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 17:58:35,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:35,473 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-03-16 17:58:35,492 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-16 17:58:35,492 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 17:58:35,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:36,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:36,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172716047] [2025-03-16 17:58:36,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172716047] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:58:36,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297319282] [2025-03-16 17:58:36,108 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 17:58:36,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:36,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:36,110 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 17:58:36,111 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 17:58:36,129 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-03-16 17:58:36,147 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-16 17:58:36,147 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 17:58:36,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:36,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-16 17:58:36,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:58:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:36,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:58:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:37,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297319282] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:58:37,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:58:37,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-03-16 17:58:37,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107498712] [2025-03-16 17:58:37,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:58:37,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-16 17:58:37,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:58:37,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-16 17:58:37,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1066, Invalid=1286, Unknown=0, NotChecked=0, Total=2352 [2025-03-16 17:58:37,071 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:37,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:58:37,913 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2025-03-16 17:58:37,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-03-16 17:58:37,914 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-03-16 17:58:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:58:37,914 INFO L225 Difference]: With dead ends: 86 [2025-03-16 17:58:37,914 INFO L226 Difference]: Without dead ends: 58 [2025-03-16 17:58:37,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1749 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3222, Invalid=5334, Unknown=0, NotChecked=0, Total=8556 [2025-03-16 17:58:37,916 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 60 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:58:37,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 42 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:58:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-16 17:58:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2025-03-16 17:58:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 17:58:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2025-03-16 17:58:37,920 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 27 [2025-03-16 17:58:37,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:58:37,921 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2025-03-16 17:58:37,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2025-03-16 17:58:37,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-16 17:58:37,921 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:37,921 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1] [2025-03-16 17:58:37,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-16 17:58:38,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:38,122 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:38,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:38,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1213620227, now seen corresponding path program 4 times [2025-03-16 17:58:38,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:38,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52851003] [2025-03-16 17:58:38,122 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 17:58:38,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:38,127 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-03-16 17:58:38,161 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-03-16 17:58:38,161 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 17:58:38,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:39,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:39,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52851003] [2025-03-16 17:58:39,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52851003] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:58:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741908666] [2025-03-16 17:58:39,843 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 17:58:39,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:39,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:39,844 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:58:39,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 17:58:39,870 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-03-16 17:58:39,921 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-03-16 17:58:39,922 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 17:58:39,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:39,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 91 conjuncts are in the unsatisfiable core [2025-03-16 17:58:39,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:58:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:40,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:58:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741908666] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:58:42,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:58:42,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 92 [2025-03-16 17:58:42,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033492546] [2025-03-16 17:58:42,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:58:42,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2025-03-16 17:58:42,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:58:42,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2025-03-16 17:58:42,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2025-03-16 17:58:42,539 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 92 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:58:42,716 INFO L93 Difference]: Finished difference Result 193 states and 282 transitions. [2025-03-16 17:58:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2025-03-16 17:58:42,716 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 92 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-16 17:58:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:58:42,717 INFO L225 Difference]: With dead ends: 193 [2025-03-16 17:58:42,717 INFO L226 Difference]: Without dead ends: 143 [2025-03-16 17:58:42,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2025-03-16 17:58:42,719 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 266 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:58:42,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 66 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:58:42,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-03-16 17:58:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 100. [2025-03-16 17:58:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.469387755102041) internal successors, (144), 99 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 17:58:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 144 transitions. [2025-03-16 17:58:42,726 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 144 transitions. Word has length 50 [2025-03-16 17:58:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:58:42,726 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 144 transitions. [2025-03-16 17:58:42,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 92 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 144 transitions. [2025-03-16 17:58:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-16 17:58:42,728 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:42,728 INFO L218 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1] [2025-03-16 17:58:42,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-16 17:58:42,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-16 17:58:42,931 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:42,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:42,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1031593774, now seen corresponding path program 5 times [2025-03-16 17:58:42,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:42,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555421059] [2025-03-16 17:58:42,931 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 17:58:42,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:42,938 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 24 equivalence classes. [2025-03-16 17:58:43,199 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 51 of 51 statements. [2025-03-16 17:58:43,199 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-03-16 17:58:43,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:44,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555421059] [2025-03-16 17:58:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555421059] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:58:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564095935] [2025-03-16 17:58:44,966 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 17:58:44,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:44,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:44,968 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:58:44,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 17:58:44,996 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 24 equivalence classes. [2025-03-16 17:58:45,921 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 51 of 51 statements. [2025-03-16 17:58:45,921 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-03-16 17:58:45,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:45,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 95 conjuncts are in the unsatisfiable core [2025-03-16 17:58:45,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:58:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:46,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:58:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:48,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564095935] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:58:48,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:58:48,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-03-16 17:58:48,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082575606] [2025-03-16 17:58:48,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:58:48,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-03-16 17:58:48,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:58:48,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-03-16 17:58:48,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4426, Invalid=4886, Unknown=0, NotChecked=0, Total=9312 [2025-03-16 17:58:48,603 INFO L87 Difference]: Start difference. First operand 100 states and 144 transitions. Second operand has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 97 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:58:51,220 INFO L93 Difference]: Finished difference Result 158 states and 208 transitions. [2025-03-16 17:58:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-03-16 17:58:51,220 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 97 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-03-16 17:58:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:58:51,221 INFO L225 Difference]: With dead ends: 158 [2025-03-16 17:58:51,221 INFO L226 Difference]: Without dead ends: 106 [2025-03-16 17:58:51,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7521 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=13350, Invalid=22182, Unknown=0, NotChecked=0, Total=35532 [2025-03-16 17:58:51,225 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 207 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:58:51,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 70 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:58:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-03-16 17:58:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2025-03-16 17:58:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 103 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2025-03-16 17:58:51,232 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 51 [2025-03-16 17:58:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:58:51,232 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2025-03-16 17:58:51,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 97 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:58:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2025-03-16 17:58:51,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-16 17:58:51,234 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:58:51,234 INFO L218 NwaCegarLoop]: trace histogram [92, 1, 1, 1, 1, 1, 1] [2025-03-16 17:58:51,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-16 17:58:51,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 17:58:51,436 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:58:51,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:58:51,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1399404035, now seen corresponding path program 5 times [2025-03-16 17:58:51,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:58:51,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109533322] [2025-03-16 17:58:51,437 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 17:58:51,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:58:51,444 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 98 statements into 47 equivalence classes. [2025-03-16 17:58:52,608 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 17:58:52,609 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-16 17:58:52,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:58:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:58:58,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:58:58,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109533322] [2025-03-16 17:58:58,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109533322] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:58:58,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013456847] [2025-03-16 17:58:58,880 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 17:58:58,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:58:58,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:58:58,882 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:58:58,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 17:58:58,927 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 98 statements into 47 equivalence classes. [2025-03-16 17:59:07,150 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 17:59:07,151 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-16 17:59:07,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:59:07,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 187 conjuncts are in the unsatisfiable core [2025-03-16 17:59:07,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:59:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:59:07,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:59:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:59:16,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013456847] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:59:16,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:59:16,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 188 [2025-03-16 17:59:16,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541084730] [2025-03-16 17:59:16,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:59:16,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2025-03-16 17:59:16,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:59:16,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2025-03-16 17:59:16,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2025-03-16 17:59:16,507 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand has 188 states, 188 states have (on average 1.0319148936170213) internal successors, (194), 188 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 17:59:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:59:17,172 INFO L93 Difference]: Finished difference Result 385 states and 570 transitions. [2025-03-16 17:59:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2025-03-16 17:59:17,172 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 188 states have (on average 1.0319148936170213) internal successors, (194), 188 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2025-03-16 17:59:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:59:17,173 INFO L225 Difference]: With dead ends: 385 [2025-03-16 17:59:17,173 INFO L226 Difference]: Without dead ends: 287 [2025-03-16 17:59:17,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2025-03-16 17:59:17,175 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 842 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 17:59:17,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 113 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 17:59:17,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2025-03-16 17:59:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 196. [2025-03-16 17:59:17,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 194 states have (on average 1.4845360824742269) internal successors, (288), 195 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 17:59:17,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2025-03-16 17:59:17,186 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 98 [2025-03-16 17:59:17,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:59:17,186 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2025-03-16 17:59:17,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 188 states have (on average 1.0319148936170213) internal successors, (194), 188 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 17:59:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2025-03-16 17:59:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-16 17:59:17,187 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:59:17,187 INFO L218 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1] [2025-03-16 17:59:17,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-16 17:59:17,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-16 17:59:17,390 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:59:17,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:59:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash -432736978, now seen corresponding path program 6 times [2025-03-16 17:59:17,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:59:17,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634070748] [2025-03-16 17:59:17,390 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 17:59:17,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:59:17,397 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 99 statements into 48 equivalence classes. [2025-03-16 17:59:17,752 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 17:59:17,752 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-03-16 17:59:17,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:59:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:59:23,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:59:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634070748] [2025-03-16 17:59:23,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634070748] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:59:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272795831] [2025-03-16 17:59:23,476 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 17:59:23,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:59:23,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:59:23,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:59:23,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 17:59:23,516 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 99 statements into 48 equivalence classes. [2025-03-16 17:59:31,307 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 17:59:31,307 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-03-16 17:59:31,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:59:31,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 191 conjuncts are in the unsatisfiable core [2025-03-16 17:59:31,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:59:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:59:31,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:59:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:59:40,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272795831] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:59:40,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:59:40,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-03-16 17:59:40,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022941160] [2025-03-16 17:59:40,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:59:40,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-03-16 17:59:40,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:59:40,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-03-16 17:59:40,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18058, Invalid=18998, Unknown=0, NotChecked=0, Total=37056 [2025-03-16 17:59:40,968 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand has 193 states, 193 states have (on average 1.0310880829015545) internal successors, (199), 193 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 17:59:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:59:50,836 INFO L93 Difference]: Finished difference Result 302 states and 400 transitions. [2025-03-16 17:59:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2025-03-16 17:59:50,836 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.0310880829015545) internal successors, (199), 193 states have internal predecessors, (199), 0 states have call successors, (0), 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 99 [2025-03-16 17:59:50,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:59:50,837 INFO L225 Difference]: With dead ends: 302 [2025-03-16 17:59:50,837 INFO L226 Difference]: Without dead ends: 202 [2025-03-16 17:59:50,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 379 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31161 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=54342, Invalid=90438, Unknown=0, NotChecked=0, Total=144780 [2025-03-16 17:59:50,845 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 479 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 17:59:50,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 118 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 17:59:50,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-03-16 17:59:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2025-03-16 17:59:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 198 states have (on average 1.02020202020202) internal successors, (202), 199 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 17:59:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2025-03-16 17:59:50,861 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 99 [2025-03-16 17:59:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:59:50,862 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2025-03-16 17:59:50,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.0310880829015545) internal successors, (199), 193 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 17:59:50,862 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2025-03-16 17:59:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2025-03-16 17:59:50,863 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:59:50,863 INFO L218 NwaCegarLoop]: trace histogram [188, 1, 1, 1, 1, 1, 1] [2025-03-16 17:59:50,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-16 17:59:51,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 17:59:51,064 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:59:51,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:59:51,064 INFO L85 PathProgramCache]: Analyzing trace with hash -297984515, now seen corresponding path program 6 times [2025-03-16 17:59:51,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:59:51,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324890553] [2025-03-16 17:59:51,064 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 17:59:51,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:59:51,075 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 194 statements into 95 equivalence classes. [2025-03-16 17:59:51,505 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 194 of 194 statements. [2025-03-16 17:59:51,505 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-03-16 17:59:51,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat