./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem10_label13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem10_label13.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 29c272f94fc98eecb70c8e165b01acafdc9b1cf1c8d08d69100d178e45ed1c97 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:47:33,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:47:33,396 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:47:33,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:47:33,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:47:33,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:47:33,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:47:33,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:47:33,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:47:33,426 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:47:33,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:47:33,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:47:33,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:47:33,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:47:33,431 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:47:33,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:47:33,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:47:33,432 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:47:33,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:47:33,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:47:33,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:47:33,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:47:33,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:47:33,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:47:33,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:47:33,438 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:47:33,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:47:33,439 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:47:33,439 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:47:33,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:47:33,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:47:33,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:47:33,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:47:33,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:47:33,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:47:33,441 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:47:33,441 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:47:33,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:47:33,443 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:47:33,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:47:33,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:47:33,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:47:33,445 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29c272f94fc98eecb70c8e165b01acafdc9b1cf1c8d08d69100d178e45ed1c97 [2024-11-16 03:47:33,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:47:33,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:47:33,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:47:33,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:47:33,738 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:47:33,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem10_label13.c [2024-11-16 03:47:35,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:47:35,419 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:47:35,420 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label13.c [2024-11-16 03:47:35,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f85381cd/b3b8170575414c0f8da17b98a89acb18/FLAGac440841f [2024-11-16 03:47:35,461 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f85381cd/b3b8170575414c0f8da17b98a89acb18 [2024-11-16 03:47:35,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:47:35,467 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:47:35,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:47:35,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:47:35,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:47:35,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:47:35" (1/1) ... [2024-11-16 03:47:35,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24407ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:35, skipping insertion in model container [2024-11-16 03:47:35,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:47:35" (1/1) ... [2024-11-16 03:47:35,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:47:35,774 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label13.c[6334,6347] [2024-11-16 03:47:35,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:47:35,945 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:47:35,987 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label13.c[6334,6347] [2024-11-16 03:47:36,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:47:36,100 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:47:36,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36 WrapperNode [2024-11-16 03:47:36,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:47:36,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:47:36,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:47:36,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:47:36,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,215 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 597 [2024-11-16 03:47:36,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:47:36,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:47:36,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:47:36,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:47:36,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,287 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]. [2024-11-16 03:47:36,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,322 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:47:36,360 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:47:36,360 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:47:36,360 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:47:36,361 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (1/1) ... [2024-11-16 03:47:36,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:47:36,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:47:36,397 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) [2024-11-16 03:47:36,400 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 [2024-11-16 03:47:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:47:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:47:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:47:36,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:47:36,523 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:47:36,525 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:47:37,502 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-16 03:47:37,503 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:47:37,527 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:47:37,529 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:47:37,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:47:37 BoogieIcfgContainer [2024-11-16 03:47:37,530 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:47:37,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:47:37,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:47:37,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:47:37,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:47:35" (1/3) ... [2024-11-16 03:47:37,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37349673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:47:37, skipping insertion in model container [2024-11-16 03:47:37,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:47:36" (2/3) ... [2024-11-16 03:47:37,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37349673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:47:37, skipping insertion in model container [2024-11-16 03:47:37,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:47:37" (3/3) ... [2024-11-16 03:47:37,541 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label13.c [2024-11-16 03:47:37,559 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:47:37,559 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:47:37,628 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:47:37,636 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;@769a3d3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:47:37,637 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:47:37,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 207 states have (on average 1.6763285024154588) internal successors, (347), 208 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:37,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 03:47:37,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:47:37,653 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:47:37,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:47:37,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:47:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1358136184, now seen corresponding path program 1 times [2024-11-16 03:47:37,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:47:37,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915483024] [2024-11-16 03:47:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:47:37,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:47:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:47:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:47:38,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:47:38,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915483024] [2024-11-16 03:47:38,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915483024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:47:38,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:47:38,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:47:38,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726744014] [2024-11-16 03:47:38,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:47:38,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:47:38,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:47:38,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:47:38,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:47:38,385 INFO L87 Difference]: Start difference. First operand has 209 states, 207 states have (on average 1.6763285024154588) internal successors, (347), 208 states have internal predecessors, (347), 0 states have call successors, (0), 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 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:39,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:47:39,631 INFO L93 Difference]: Finished difference Result 703 states and 1255 transitions. [2024-11-16 03:47:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:47:39,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 03:47:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:47:39,646 INFO L225 Difference]: With dead ends: 703 [2024-11-16 03:47:39,647 INFO L226 Difference]: Without dead ends: 425 [2024-11-16 03:47:39,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:47:39,653 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 463 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:47:39,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 50 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 03:47:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-16 03:47:39,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2024-11-16 03:47:39,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.3797169811320755) internal successors, (585), 424 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:39,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 585 transitions. [2024-11-16 03:47:39,718 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 585 transitions. Word has length 57 [2024-11-16 03:47:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:47:39,719 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 585 transitions. [2024-11-16 03:47:39,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 585 transitions. [2024-11-16 03:47:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-16 03:47:39,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:47:39,727 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:47:39,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:47:39,727 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:47:39,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:47:39,728 INFO L85 PathProgramCache]: Analyzing trace with hash 889817435, now seen corresponding path program 1 times [2024-11-16 03:47:39,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:47:39,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434459159] [2024-11-16 03:47:39,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:47:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:47:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:47:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:47:40,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:47:40,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434459159] [2024-11-16 03:47:40,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434459159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:47:40,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:47:40,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 03:47:40,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125349554] [2024-11-16 03:47:40,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:47:40,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 03:47:40,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:47:40,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 03:47:40,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:47:40,536 INFO L87 Difference]: Start difference. First operand 425 states and 585 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:47:41,573 INFO L93 Difference]: Finished difference Result 989 states and 1449 transitions. [2024-11-16 03:47:41,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 03:47:41,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2024-11-16 03:47:41,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:47:41,580 INFO L225 Difference]: With dead ends: 989 [2024-11-16 03:47:41,580 INFO L226 Difference]: Without dead ends: 706 [2024-11-16 03:47:41,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:47:41,583 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 172 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:47:41,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 97 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 03:47:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-16 03:47:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 705. [2024-11-16 03:47:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 704 states have (on average 1.3068181818181819) internal successors, (920), 704 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 920 transitions. [2024-11-16 03:47:41,622 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 920 transitions. Word has length 240 [2024-11-16 03:47:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:47:41,625 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 920 transitions. [2024-11-16 03:47:41,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:41,626 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 920 transitions. [2024-11-16 03:47:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-16 03:47:41,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:47:41,632 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:47:41,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:47:41,632 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:47:41,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:47:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1242434332, now seen corresponding path program 1 times [2024-11-16 03:47:41,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:47:41,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838804792] [2024-11-16 03:47:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:47:41,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:47:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:47:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:47:42,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:47:42,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838804792] [2024-11-16 03:47:42,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838804792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:47:42,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:47:42,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 03:47:42,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351234555] [2024-11-16 03:47:42,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:47:42,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 03:47:42,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:47:42,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 03:47:42,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:47:42,188 INFO L87 Difference]: Start difference. First operand 705 states and 920 transitions. Second operand has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:47:42,716 INFO L93 Difference]: Finished difference Result 1324 states and 1749 transitions. [2024-11-16 03:47:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 03:47:42,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2024-11-16 03:47:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:47:42,720 INFO L225 Difference]: With dead ends: 1324 [2024-11-16 03:47:42,720 INFO L226 Difference]: Without dead ends: 705 [2024-11-16 03:47:42,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:47:42,725 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 143 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:47:42,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 30 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:47:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-11-16 03:47:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2024-11-16 03:47:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 704 states have (on average 1.3011363636363635) internal successors, (916), 704 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 916 transitions. [2024-11-16 03:47:42,743 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 916 transitions. Word has length 249 [2024-11-16 03:47:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:47:42,744 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 916 transitions. [2024-11-16 03:47:42,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 916 transitions. [2024-11-16 03:47:42,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-16 03:47:42,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:47:42,748 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:47:42,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:47:42,748 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:47:42,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:47:42,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1196322890, now seen corresponding path program 1 times [2024-11-16 03:47:42,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:47:42,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372267696] [2024-11-16 03:47:42,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:47:42,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:47:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:47:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 212 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:47:43,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:47:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372267696] [2024-11-16 03:47:43,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372267696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:47:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717715212] [2024-11-16 03:47:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:47:43,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:47:43,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:47:43,601 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) [2024-11-16 03:47:43,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:47:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:47:43,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:47:43,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:47:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:47:43,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:47:43,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717715212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:47:43,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:47:43,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-16 03:47:43,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852144815] [2024-11-16 03:47:43,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:47:43,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:47:43,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:47:43,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:47:43,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-16 03:47:43,955 INFO L87 Difference]: Start difference. First operand 705 states and 916 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:44,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:47:44,458 INFO L93 Difference]: Finished difference Result 1688 states and 2304 transitions. [2024-11-16 03:47:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:47:44,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 285 [2024-11-16 03:47:44,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:47:44,464 INFO L225 Difference]: With dead ends: 1688 [2024-11-16 03:47:44,464 INFO L226 Difference]: Without dead ends: 1125 [2024-11-16 03:47:44,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-16 03:47:44,467 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 43 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:47:44,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 46 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:47:44,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2024-11-16 03:47:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 985. [2024-11-16 03:47:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 1.2794715447154472) internal successors, (1259), 984 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1259 transitions. [2024-11-16 03:47:44,496 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1259 transitions. Word has length 285 [2024-11-16 03:47:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:47:44,497 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 1259 transitions. [2024-11-16 03:47:44,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1259 transitions. [2024-11-16 03:47:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-16 03:47:44,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:47:44,503 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:47:44,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 03:47:44,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:47:44,707 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:47:44,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:47:44,708 INFO L85 PathProgramCache]: Analyzing trace with hash 730510196, now seen corresponding path program 1 times [2024-11-16 03:47:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:47:44,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780361409] [2024-11-16 03:47:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:47:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:47:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:47:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 03:47:45,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:47:45,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780361409] [2024-11-16 03:47:45,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780361409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:47:45,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:47:45,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 03:47:45,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272857176] [2024-11-16 03:47:45,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:47:45,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 03:47:45,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:47:45,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 03:47:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:47:45,256 INFO L87 Difference]: Start difference. First operand 985 states and 1259 transitions. Second operand has 7 states, 7 states have (on average 40.714285714285715) internal successors, (285), 6 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:45,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:47:45,908 INFO L93 Difference]: Finished difference Result 1892 states and 2436 transitions. [2024-11-16 03:47:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 03:47:45,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.714285714285715) internal successors, (285), 6 states have internal predecessors, (285), 0 states have call successors, (0), 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 355 [2024-11-16 03:47:45,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:47:45,912 INFO L225 Difference]: With dead ends: 1892 [2024-11-16 03:47:45,913 INFO L226 Difference]: Without dead ends: 985 [2024-11-16 03:47:45,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:47:45,915 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 122 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:47:45,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 57 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:47:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2024-11-16 03:47:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 985. [2024-11-16 03:47:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 1.2703252032520325) internal successors, (1250), 984 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1250 transitions. [2024-11-16 03:47:45,933 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1250 transitions. Word has length 355 [2024-11-16 03:47:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:47:45,934 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 1250 transitions. [2024-11-16 03:47:45,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.714285714285715) internal successors, (285), 6 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1250 transitions. [2024-11-16 03:47:45,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-16 03:47:45,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:47:45,940 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:47:45,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:47:45,941 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:47:45,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:47:45,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1942243471, now seen corresponding path program 1 times [2024-11-16 03:47:45,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:47:45,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696664200] [2024-11-16 03:47:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:47:45,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:47:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:47:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2024-11-16 03:47:46,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:47:46,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696664200] [2024-11-16 03:47:46,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696664200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:47:46,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:47:46,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:47:46,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820790289] [2024-11-16 03:47:46,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:47:46,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:47:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:47:46,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:47:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:47:46,213 INFO L87 Difference]: Start difference. First operand 985 states and 1250 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:47:46,728 INFO L93 Difference]: Finished difference Result 2525 states and 3241 transitions. [2024-11-16 03:47:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:47:46,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 359 [2024-11-16 03:47:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:47:46,729 INFO L225 Difference]: With dead ends: 2525 [2024-11-16 03:47:46,730 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 03:47:46,732 INFO L431 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 [2024-11-16 03:47:46,733 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 89 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:47:46,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 54 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:47:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 03:47:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 03:47:46,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 03:47:46,735 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 359 [2024-11-16 03:47:46,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:47:46,735 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 03:47:46,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:47:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 03:47:46,736 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 03:47:46,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 03:47:46,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:47:46,742 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-16 03:47:46,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 03:47:46,835 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 03:47:46,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:47:46 BoogieIcfgContainer [2024-11-16 03:47:46,849 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 03:47:46,850 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 03:47:46,850 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 03:47:46,850 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 03:47:46,851 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:47:37" (3/4) ... [2024-11-16 03:47:46,853 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 03:47:46,874 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-16 03:47:46,875 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 03:47:46,875 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 03:47:46,876 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 03:47:47,026 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 03:47:47,029 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 03:47:47,029 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 03:47:47,030 INFO L158 Benchmark]: Toolchain (without parser) took 11563.09ms. Allocated memory was 157.3MB in the beginning and 339.7MB in the end (delta: 182.5MB). Free memory was 99.6MB in the beginning and 236.1MB in the end (delta: -136.5MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2024-11-16 03:47:47,030 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 157.3MB. Free memory was 118.1MB in the beginning and 117.9MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 03:47:47,032 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.82ms. Allocated memory is still 157.3MB. Free memory was 99.6MB in the beginning and 69.7MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-16 03:47:47,032 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.71ms. Allocated memory is still 157.3MB. Free memory was 69.7MB in the beginning and 123.2MB in the end (delta: -53.4MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2024-11-16 03:47:47,033 INFO L158 Benchmark]: Boogie Preprocessor took 138.95ms. Allocated memory was 157.3MB in the beginning and 232.8MB in the end (delta: 75.5MB). Free memory was 123.1MB in the beginning and 191.5MB in the end (delta: -68.4MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2024-11-16 03:47:47,033 INFO L158 Benchmark]: IcfgBuilder took 1170.47ms. Allocated memory is still 232.8MB. Free memory was 191.5MB in the beginning and 100.3MB in the end (delta: 91.2MB). Peak memory consumption was 90.2MB. Max. memory is 16.1GB. [2024-11-16 03:47:47,033 INFO L158 Benchmark]: TraceAbstraction took 9316.41ms. Allocated memory was 232.8MB in the beginning and 339.7MB in the end (delta: 107.0MB). Free memory was 99.3MB in the beginning and 248.7MB in the end (delta: -149.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 03:47:47,033 INFO L158 Benchmark]: Witness Printer took 179.35ms. Allocated memory is still 339.7MB. Free memory was 248.7MB in the beginning and 237.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 03:47:47,035 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 157.3MB. Free memory was 118.1MB in the beginning and 117.9MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 630.82ms. Allocated memory is still 157.3MB. Free memory was 99.6MB in the beginning and 69.7MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 116.71ms. Allocated memory is still 157.3MB. Free memory was 69.7MB in the beginning and 123.2MB in the end (delta: -53.4MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 138.95ms. Allocated memory was 157.3MB in the beginning and 232.8MB in the end (delta: 75.5MB). Free memory was 123.1MB in the beginning and 191.5MB in the end (delta: -68.4MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * IcfgBuilder took 1170.47ms. Allocated memory is still 232.8MB. Free memory was 191.5MB in the beginning and 100.3MB in the end (delta: 91.2MB). Peak memory consumption was 90.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9316.41ms. Allocated memory was 232.8MB in the beginning and 339.7MB in the end (delta: 107.0MB). Free memory was 99.3MB in the beginning and 248.7MB in the end (delta: -149.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 179.35ms. Allocated memory is still 339.7MB. Free memory was 248.7MB in the beginning and 237.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 179]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 209 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.1s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1032 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1032 mSDsluCounter, 334 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 573 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4308 IncrementalHoareTripleChecker+Invalid, 4881 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 573 mSolverCounterUnsat, 222 mSDtfsCounter, 4308 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=985occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 141 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1830 NumberOfCodeBlocks, 1830 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1823 ConstructedInterpolants, 0 QuantifiedInterpolants, 10857 SizeOfPredicates, 0 NumberOfNonLiveVariables, 388 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 1606/1612 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 592]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-16 03:47:47,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE