./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gr2006.i --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/loop-lit/gr2006.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:46:40,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:46:40,216 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:46:40,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:46:40,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:46:40,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:46:40,245 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:46:40,246 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:46:40,246 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:46:40,247 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:46:40,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:46:40,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:46:40,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:46:40,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:46:40,250 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:46:40,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:46:40,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:46:40,251 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:46:40,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:46:40,252 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:46:40,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:46:40,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:46:40,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:46:40,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:46:40,255 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:46:40,255 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:46:40,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:46:40,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:46:40,255 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:46:40,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:46:40,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:46:40,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:46:40,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:46:40,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:46:40,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:46:40,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:46:40,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:46:40,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:46:40,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:46:40,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:46:40,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:46:40,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:46:40,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 [2024-11-16 06:46:40,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:46:40,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:46:40,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:46:40,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:46:40,504 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:46:40,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gr2006.i [2024-11-16 06:46:41,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:46:41,975 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:46:41,976 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i [2024-11-16 06:46:41,984 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb70ab16/415deb9e63804d11aa59943d01ead5c9/FLAG889bf149d [2024-11-16 06:46:42,389 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb70ab16/415deb9e63804d11aa59943d01ead5c9 [2024-11-16 06:46:42,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:46:42,395 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:46:42,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:46:42,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:46:42,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:46:42,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2c2ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42, skipping insertion in model container [2024-11-16 06:46:42,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,421 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:46:42,562 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-lit/gr2006.i[895,908] [2024-11-16 06:46:42,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:46:42,586 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:46:42,597 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-lit/gr2006.i[895,908] [2024-11-16 06:46:42,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:46:42,610 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:46:42,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42 WrapperNode [2024-11-16 06:46:42,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:46:42,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:46:42,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:46:42,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:46:42,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,630 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2024-11-16 06:46:42,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:46:42,630 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:46:42,630 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:46:42,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:46:42,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,637 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,645 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 06:46:42,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,647 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:46:42,649 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:46:42,650 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:46:42,650 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:46:42,650 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (1/1) ... [2024-11-16 06:46:42,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:46:42,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:46:42,674 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 06:46:42,679 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 06:46:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:46:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:46:42,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:46:42,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:46:42,757 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:46:42,759 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:46:42,831 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-16 06:46:42,832 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:46:42,841 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:46:42,841 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:46:42,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:46:42 BoogieIcfgContainer [2024-11-16 06:46:42,842 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:46:42,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:46:42,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:46:42,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:46:42,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:46:42" (1/3) ... [2024-11-16 06:46:42,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789f5341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:46:42, skipping insertion in model container [2024-11-16 06:46:42,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:46:42" (2/3) ... [2024-11-16 06:46:42,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789f5341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:46:42, skipping insertion in model container [2024-11-16 06:46:42,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:46:42" (3/3) ... [2024-11-16 06:46:42,849 INFO L112 eAbstractionObserver]: Analyzing ICFG gr2006.i [2024-11-16 06:46:42,876 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:46:42,876 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:46:42,927 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:46:42,933 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;@49d73e1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:46:42,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:46:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:46:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-16 06:46:42,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:42,951 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:42,952 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:42,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:42,957 INFO L85 PathProgramCache]: Analyzing trace with hash 413043249, now seen corresponding path program 1 times [2024-11-16 06:46:42,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:42,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833215905] [2024-11-16 06:46:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:42,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:43,092 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 06:46:43,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:43,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833215905] [2024-11-16 06:46:43,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833215905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:46:43,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:46:43,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:46:43,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261046302] [2024-11-16 06:46:43,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:46:43,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:46:43,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:46:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:46:43,128 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 06:46:43,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:43,138 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-16 06:46:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:46:43,140 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 [2024-11-16 06:46:43,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:43,145 INFO L225 Difference]: With dead ends: 25 [2024-11-16 06:46:43,145 INFO L226 Difference]: Without dead ends: 11 [2024-11-16 06:46:43,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:46:43,150 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:43,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:46:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-16 06:46:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-16 06:46:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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) [2024-11-16 06:46:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2024-11-16 06:46:43,171 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2024-11-16 06:46:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:43,171 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-16 06:46:43,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 06:46:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2024-11-16 06:46:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-16 06:46:43,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:43,172 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:43,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:46:43,173 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:43,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1186157624, now seen corresponding path program 1 times [2024-11-16 06:46:43,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:43,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861629767] [2024-11-16 06:46:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:43,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:43,229 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 06:46:43,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:43,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861629767] [2024-11-16 06:46:43,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861629767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:46:43,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:46:43,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:46:43,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110214273] [2024-11-16 06:46:43,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:46:43,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:46:43,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:43,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:46:43,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:46:43,233 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2024-11-16 06:46:43,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:43,251 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-16 06:46:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:46:43,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-16 06:46:43,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:43,252 INFO L225 Difference]: With dead ends: 25 [2024-11-16 06:46:43,252 INFO L226 Difference]: Without dead ends: 16 [2024-11-16 06:46:43,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 06:46:43,253 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:43,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:46:43,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-16 06:46:43,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2024-11-16 06:46:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2024-11-16 06:46:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-16 06:46:43,257 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2024-11-16 06:46:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:43,258 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-16 06:46:43,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2024-11-16 06:46:43,258 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-16 06:46:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-16 06:46:43,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:43,258 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:43,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:46:43,259 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:43,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:43,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1157528473, now seen corresponding path program 1 times [2024-11-16 06:46:43,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:43,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639344827] [2024-11-16 06:46:43,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:43,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:43,303 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 06:46:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:43,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639344827] [2024-11-16 06:46:43,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639344827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:46:43,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:46:43,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:46:43,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704999667] [2024-11-16 06:46:43,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:46:43,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:46:43,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:43,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:46:43,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:46:43,306 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2024-11-16 06:46:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:43,322 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-16 06:46:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:46:43,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-16 06:46:43,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:43,323 INFO L225 Difference]: With dead ends: 23 [2024-11-16 06:46:43,323 INFO L226 Difference]: Without dead ends: 18 [2024-11-16 06:46:43,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:46:43,324 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:43,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 25 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:46:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-16 06:46:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-16 06:46:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:46:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-16 06:46:43,328 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2024-11-16 06:46:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:43,328 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-16 06:46:43,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2024-11-16 06:46:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-16 06:46:43,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 06:46:43,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:43,329 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:43,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 06:46:43,329 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:43,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:43,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1406901942, now seen corresponding path program 1 times [2024-11-16 06:46:43,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:43,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840353404] [2024-11-16 06:46:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:43,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:46:43,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:43,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840353404] [2024-11-16 06:46:43,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840353404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:46:43,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878676049] [2024-11-16 06:46:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:43,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:43,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:46:43,383 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 06:46:43,385 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 06:46:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:43,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 06:46:43,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:46:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:46:43,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:46:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:46:43,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878676049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:46:43,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:46:43,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 06:46:43,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273227864] [2024-11-16 06:46:43,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:46:43,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:46:43,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:46:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:46:43,489 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:46:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:43,517 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2024-11-16 06:46:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:46:43,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-16 06:46:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:43,518 INFO L225 Difference]: With dead ends: 41 [2024-11-16 06:46:43,518 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 06:46:43,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:46:43,519 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:43,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 44 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:46:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 06:46:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-16 06:46:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:46:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-16 06:46:43,526 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 14 [2024-11-16 06:46:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:43,526 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-16 06:46:43,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:46:43,527 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-16 06:46:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 06:46:43,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:43,528 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:43,542 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 06:46:43,731 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 06:46:43,732 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:43,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1557011408, now seen corresponding path program 2 times [2024-11-16 06:46:43,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:43,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517328051] [2024-11-16 06:46:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:43,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:46:43,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:43,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517328051] [2024-11-16 06:46:43,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517328051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:46:43,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837083268] [2024-11-16 06:46:43,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:46:43,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:43,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:46:43,834 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) [2024-11-16 06:46:43,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:46:43,872 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:46:43,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:46:43,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:46:43,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:46:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 06:46:43,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:46:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 06:46:44,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837083268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:46:44,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:46:44,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-16 06:46:44,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640876190] [2024-11-16 06:46:44,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:46:44,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 06:46:44,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:44,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 06:46:44,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:46:44,004 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 06:46:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:44,177 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2024-11-16 06:46:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:46:44,178 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2024-11-16 06:46:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:44,178 INFO L225 Difference]: With dead ends: 61 [2024-11-16 06:46:44,179 INFO L226 Difference]: Without dead ends: 52 [2024-11-16 06:46:44,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2024-11-16 06:46:44,180 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:44,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:46:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-16 06:46:44,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2024-11-16 06:46:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 0 states have call successors, (0), 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 06:46:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2024-11-16 06:46:44,192 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 26 [2024-11-16 06:46:44,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:44,192 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2024-11-16 06:46:44,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 06:46:44,193 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2024-11-16 06:46:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 06:46:44,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:44,195 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:44,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 06:46:44,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:44,396 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:44,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash 640626210, now seen corresponding path program 3 times [2024-11-16 06:46:44,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:44,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950832272] [2024-11-16 06:46:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:44,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 97 proven. 55 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:46:44,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:44,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950832272] [2024-11-16 06:46:44,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950832272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:46:44,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33722495] [2024-11-16 06:46:44,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:46:44,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:44,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:46:44,534 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) [2024-11-16 06:46:44,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:46:44,582 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-16 06:46:44,582 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:46:44,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 06:46:44,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:46:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 91 proven. 73 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:46:44,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:46:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 91 proven. 73 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:46:44,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33722495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:46:44,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:46:44,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-16 06:46:44,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330751491] [2024-11-16 06:46:44,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:46:44,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 06:46:44,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 06:46:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:46:44,795 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:46:44,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:44,883 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2024-11-16 06:46:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 06:46:44,884 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 06:46:44,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:44,884 INFO L225 Difference]: With dead ends: 99 [2024-11-16 06:46:44,884 INFO L226 Difference]: Without dead ends: 73 [2024-11-16 06:46:44,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 76 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:46:44,885 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:44,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 71 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:46:44,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-16 06:46:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2024-11-16 06:46:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:46:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2024-11-16 06:46:44,890 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 46 [2024-11-16 06:46:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:44,890 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2024-11-16 06:46:44,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:46:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2024-11-16 06:46:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 06:46:44,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:44,891 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:44,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 06:46:45,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:45,092 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:45,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash 962156861, now seen corresponding path program 4 times [2024-11-16 06:46:45,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:45,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738888999] [2024-11-16 06:46:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 141 proven. 78 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 06:46:45,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:45,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738888999] [2024-11-16 06:46:45,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738888999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:46:45,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310218591] [2024-11-16 06:46:45,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:46:45,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:45,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:46:45,210 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) [2024-11-16 06:46:45,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:46:45,255 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:46:45,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:46:45,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 06:46:45,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:46:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 141 proven. 78 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 06:46:45,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:46:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 141 proven. 78 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 06:46:45,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310218591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:46:45,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:46:45,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-16 06:46:45,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709532283] [2024-11-16 06:46:45,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:46:45,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 06:46:45,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 06:46:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:46:45,399 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 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 06:46:45,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:45,441 INFO L93 Difference]: Finished difference Result 121 states and 141 transitions. [2024-11-16 06:46:45,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 06:46:45,441 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-16 06:46:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:45,442 INFO L225 Difference]: With dead ends: 121 [2024-11-16 06:46:45,442 INFO L226 Difference]: Without dead ends: 91 [2024-11-16 06:46:45,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:46:45,444 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:45,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 68 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:46:45,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-16 06:46:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-11-16 06:46:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0813953488372092) internal successors, (93), 86 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:46:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2024-11-16 06:46:45,452 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 54 [2024-11-16 06:46:45,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:45,452 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2024-11-16 06:46:45,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 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 06:46:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2024-11-16 06:46:45,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 06:46:45,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:45,454 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 14, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:45,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 06:46:45,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:45,659 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:45,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:45,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1689034451, now seen corresponding path program 5 times [2024-11-16 06:46:45,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:45,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270288448] [2024-11-16 06:46:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 309 proven. 406 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 06:46:45,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:45,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270288448] [2024-11-16 06:46:45,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270288448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:46:45,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41987293] [2024-11-16 06:46:45,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:46:45,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:45,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:46:45,944 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) [2024-11-16 06:46:45,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:46:45,996 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-16 06:46:45,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:46:45,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 06:46:45,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:46:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 309 proven. 406 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 06:46:46,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:46:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 309 proven. 406 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 06:46:46,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41987293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:46:46,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:46:46,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-16 06:46:46,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930816903] [2024-11-16 06:46:46,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:46:46,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 06:46:46,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 06:46:46,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 06:46:46,388 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 33 states have internal predecessors, (135), 0 states have call successors, (0), 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 06:46:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:46,462 INFO L93 Difference]: Finished difference Result 185 states and 213 transitions. [2024-11-16 06:46:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-16 06:46:46,462 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 33 states have internal predecessors, (135), 0 states have call successors, (0), 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 86 [2024-11-16 06:46:46,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:46,463 INFO L225 Difference]: With dead ends: 185 [2024-11-16 06:46:46,464 INFO L226 Difference]: Without dead ends: 155 [2024-11-16 06:46:46,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 06:46:46,465 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:46,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 97 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:46:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-16 06:46:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-11-16 06:46:46,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0466666666666666) internal successors, (157), 150 states have internal predecessors, (157), 0 states have call successors, (0), 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 06:46:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 157 transitions. [2024-11-16 06:46:46,473 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 157 transitions. Word has length 86 [2024-11-16 06:46:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:46,474 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 157 transitions. [2024-11-16 06:46:46,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 33 states have internal predecessors, (135), 0 states have call successors, (0), 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 06:46:46,474 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 157 transitions. [2024-11-16 06:46:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-16 06:46:46,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:46,477 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 35, 30, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:46,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 06:46:46,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:46,678 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:46,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:46,679 INFO L85 PathProgramCache]: Analyzing trace with hash 661926157, now seen corresponding path program 6 times [2024-11-16 06:46:46,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:46,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158901807] [2024-11-16 06:46:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:46,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 645 proven. 1830 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 06:46:47,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:47,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158901807] [2024-11-16 06:46:47,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158901807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:46:47,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215896013] [2024-11-16 06:46:47,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:46:47,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:47,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:46:47,392 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) [2024-11-16 06:46:47,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:46:47,456 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-11-16 06:46:47,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:46:47,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:46:47,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:46:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1285 proven. 111 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2024-11-16 06:46:47,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:46:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1285 proven. 111 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2024-11-16 06:46:47,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215896013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:46:47,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:46:47,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 40 [2024-11-16 06:46:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452428835] [2024-11-16 06:46:47,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:46:47,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-16 06:46:47,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-16 06:46:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=997, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 06:46:47,832 INFO L87 Difference]: Start difference. First operand 151 states and 157 transitions. Second operand has 40 states, 40 states have (on average 4.325) internal successors, (173), 40 states have internal predecessors, (173), 0 states have call successors, (0), 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 06:46:48,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:48,339 INFO L93 Difference]: Finished difference Result 211 states and 231 transitions. [2024-11-16 06:46:48,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-16 06:46:48,339 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.325) internal successors, (173), 40 states have internal predecessors, (173), 0 states have call successors, (0), 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 150 [2024-11-16 06:46:48,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:48,340 INFO L225 Difference]: With dead ends: 211 [2024-11-16 06:46:48,343 INFO L226 Difference]: Without dead ends: 181 [2024-11-16 06:46:48,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 281 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1863, Invalid=3989, Unknown=0, NotChecked=0, Total=5852 [2024-11-16 06:46:48,345 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:48,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 143 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:46:48,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-16 06:46:48,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 159. [2024-11-16 06:46:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0506329113924051) internal successors, (166), 158 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:46:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2024-11-16 06:46:48,360 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 150 [2024-11-16 06:46:48,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:48,363 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 166 transitions. [2024-11-16 06:46:48,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.325) internal successors, (173), 40 states have internal predecessors, (173), 0 states have call successors, (0), 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 06:46:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 166 transitions. [2024-11-16 06:46:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-16 06:46:48,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:48,365 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 37, 31, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:48,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 06:46:48,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:48,566 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:48,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:48,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1931794264, now seen corresponding path program 7 times [2024-11-16 06:46:48,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:48,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783140630] [2024-11-16 06:46:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:48,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 793 proven. 1953 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-16 06:46:49,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:49,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783140630] [2024-11-16 06:46:49,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783140630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:46:49,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885878137] [2024-11-16 06:46:49,214 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:46:49,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:49,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:46:49,216 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) [2024-11-16 06:46:49,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:46:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:49,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 06:46:49,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:46:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 793 proven. 1953 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-16 06:46:49,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:46:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 793 proven. 1953 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-16 06:46:50,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885878137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:46:50,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:46:50,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 53 [2024-11-16 06:46:50,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544992815] [2024-11-16 06:46:50,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:46:50,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-16 06:46:50,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:50,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-16 06:46:50,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-11-16 06:46:50,254 INFO L87 Difference]: Start difference. First operand 159 states and 166 transitions. Second operand has 53 states, 53 states have (on average 4.09433962264151) internal successors, (217), 53 states have internal predecessors, (217), 0 states have call successors, (0), 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 06:46:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:50,393 INFO L93 Difference]: Finished difference Result 274 states and 307 transitions. [2024-11-16 06:46:50,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-16 06:46:50,393 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.09433962264151) internal successors, (217), 53 states have internal predecessors, (217), 0 states have call successors, (0), 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 158 [2024-11-16 06:46:50,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:50,395 INFO L225 Difference]: With dead ends: 274 [2024-11-16 06:46:50,395 INFO L226 Difference]: Without dead ends: 240 [2024-11-16 06:46:50,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 283 SyntacticMatches, 14 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-11-16 06:46:50,398 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:50,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 137 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:46:50,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-16 06:46:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2024-11-16 06:46:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.0341880341880343) internal successors, (242), 234 states have internal predecessors, (242), 0 states have call successors, (0), 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 06:46:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 242 transitions. [2024-11-16 06:46:50,417 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 242 transitions. Word has length 158 [2024-11-16 06:46:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:50,417 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 242 transitions. [2024-11-16 06:46:50,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.09433962264151) internal successors, (217), 53 states have internal predecessors, (217), 0 states have call successors, (0), 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 06:46:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 242 transitions. [2024-11-16 06:46:50,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-16 06:46:50,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:50,423 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 56, 50, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:50,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 06:46:50,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:50,625 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:50,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:50,626 INFO L85 PathProgramCache]: Analyzing trace with hash 947173890, now seen corresponding path program 8 times [2024-11-16 06:46:50,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:50,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714730913] [2024-11-16 06:46:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:50,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2591 proven. 157 refuted. 0 times theorem prover too weak. 3636 trivial. 0 not checked. [2024-11-16 06:46:50,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:50,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714730913] [2024-11-16 06:46:50,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714730913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:46:50,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992128845] [2024-11-16 06:46:50,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:46:50,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:50,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:46:50,891 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) [2024-11-16 06:46:50,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:46:50,970 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:46:50,971 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:46:50,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-16 06:46:50,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:46:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 6202 proven. 157 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-16 06:46:52,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:46:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 6202 proven. 157 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-16 06:46:53,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992128845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:46:53,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:46:53,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 53, 53] total 96 [2024-11-16 06:46:53,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197189554] [2024-11-16 06:46:53,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:46:53,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-16 06:46:53,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-16 06:46:53,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-16 06:46:53,199 INFO L87 Difference]: Start difference. First operand 235 states and 242 transitions. Second operand has 96 states, 96 states have (on average 4.197916666666667) internal successors, (403), 96 states have internal predecessors, (403), 0 states have call successors, (0), 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 06:46:53,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:46:53,687 INFO L93 Difference]: Finished difference Result 1516 states and 1874 transitions. [2024-11-16 06:46:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-16 06:46:53,688 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 4.197916666666667) internal successors, (403), 96 states have internal predecessors, (403), 0 states have call successors, (0), 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 234 [2024-11-16 06:46:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:46:53,693 INFO L225 Difference]: With dead ends: 1516 [2024-11-16 06:46:53,693 INFO L226 Difference]: Without dead ends: 1511 [2024-11-16 06:46:53,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 375 SyntacticMatches, 14 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4951 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-16 06:46:53,695 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:46:53,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:46:53,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2024-11-16 06:46:53,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 411. [2024-11-16 06:46:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.1268292682926828) internal successors, (462), 410 states have internal predecessors, (462), 0 states have call successors, (0), 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 06:46:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 462 transitions. [2024-11-16 06:46:53,719 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 462 transitions. Word has length 234 [2024-11-16 06:46:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:46:53,719 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 462 transitions. [2024-11-16 06:46:53,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 4.197916666666667) internal successors, (403), 96 states have internal predecessors, (403), 0 states have call successors, (0), 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 06:46:53,720 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 462 transitions. [2024-11-16 06:46:53,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-16 06:46:53,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:46:53,723 INFO L215 NwaCegarLoop]: trace histogram [101, 101, 100, 51, 50, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:46:53,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 06:46:53,924 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,SelfDestructingSolverStorable10 [2024-11-16 06:46:53,924 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:46:53,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:46:53,925 INFO L85 PathProgramCache]: Analyzing trace with hash 958248958, now seen corresponding path program 9 times [2024-11-16 06:46:53,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:46:53,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862642050] [2024-11-16 06:46:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:46:53,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:46:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:46:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 20200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:46:58,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:46:58,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862642050] [2024-11-16 06:46:58,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862642050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:46:58,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087600917] [2024-11-16 06:46:58,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:46:58,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:46:58,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:46:58,463 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) [2024-11-16 06:46:58,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:46:58,602 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2024-11-16 06:46:58,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:46:58,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-16 06:46:58,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:46:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10198 proven. 5151 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2024-11-16 06:46:58,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:46:59,154 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10198 proven. 5151 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2024-11-16 06:46:59,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087600917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:46:59,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:46:59,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 56, 56] total 106 [2024-11-16 06:46:59,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785177867] [2024-11-16 06:46:59,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:46:59,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-16 06:46:59,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:46:59,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-16 06:46:59,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1486, Invalid=9644, Unknown=0, NotChecked=0, Total=11130 [2024-11-16 06:46:59,159 INFO L87 Difference]: Start difference. First operand 411 states and 462 transitions. Second operand has 106 states, 106 states have (on average 3.943396226415094) internal successors, (418), 106 states have internal predecessors, (418), 0 states have call successors, (0), 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 06:47:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:47:01,958 INFO L93 Difference]: Finished difference Result 5821 states and 7248 transitions. [2024-11-16 06:47:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-16 06:47:01,959 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 3.943396226415094) internal successors, (418), 106 states have internal predecessors, (418), 0 states have call successors, (0), 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 410 [2024-11-16 06:47:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:47:01,972 INFO L225 Difference]: With dead ends: 5821 [2024-11-16 06:47:01,973 INFO L226 Difference]: Without dead ends: 5609 [2024-11-16 06:47:01,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 816 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2705 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1486, Invalid=9644, Unknown=0, NotChecked=0, Total=11130 [2024-11-16 06:47:01,978 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 49 mSDsluCounter, 8373 mSDsCounter, 0 mSdLazyCounter, 8521 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 8530 SdHoareTripleChecker+Invalid, 8571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 8521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 06:47:01,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 8530 Invalid, 8571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 8521 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 06:47:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5609 states. [2024-11-16 06:47:02,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5609 to 5560. [2024-11-16 06:47:02,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5559 states have (on average 1.0181687353840618) internal successors, (5660), 5559 states have internal predecessors, (5660), 0 states have call successors, (0), 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 06:47:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 5660 transitions. [2024-11-16 06:47:02,302 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 5660 transitions. Word has length 410 [2024-11-16 06:47:02,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:47:02,303 INFO L471 AbstractCegarLoop]: Abstraction has 5560 states and 5660 transitions. [2024-11-16 06:47:02,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 3.943396226415094) internal successors, (418), 106 states have internal predecessors, (418), 0 states have call successors, (0), 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 06:47:02,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 5660 transitions. [2024-11-16 06:47:02,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-16 06:47:02,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:47:02,308 INFO L215 NwaCegarLoop]: trace histogram [102, 102, 101, 52, 50, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:47:02,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 06:47:02,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:47:02,509 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:47:02,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:47:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1938563227, now seen corresponding path program 10 times [2024-11-16 06:47:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:47:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749735715] [2024-11-16 06:47:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:47:02,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:47:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:47:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10504 proven. 9904 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-16 06:47:05,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:47:05,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749735715] [2024-11-16 06:47:05,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749735715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:47:05,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744923369] [2024-11-16 06:47:05,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:47:05,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:47:05,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:47:05,265 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) [2024-11-16 06:47:05,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 06:47:05,386 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:47:05,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:47:05,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-16 06:47:05,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:47:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10504 proven. 9901 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-16 06:47:05,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:47:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10504 proven. 9901 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-16 06:47:07,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744923369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:47:07,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:47:07,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 55 [2024-11-16 06:47:07,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249317232] [2024-11-16 06:47:07,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:47:07,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-16 06:47:07,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:47:07,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-16 06:47:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 06:47:07,796 INFO L87 Difference]: Start difference. First operand 5560 states and 5660 transitions. Second operand has 55 states, 55 states have (on average 4.890909090909091) internal successors, (269), 55 states have internal predecessors, (269), 0 states have call successors, (0), 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 06:47:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:47:08,164 INFO L93 Difference]: Finished difference Result 11124 states and 11325 transitions. [2024-11-16 06:47:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-16 06:47:08,165 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.890909090909091) internal successors, (269), 55 states have internal predecessors, (269), 0 states have call successors, (0), 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 414 [2024-11-16 06:47:08,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:47:08,181 INFO L225 Difference]: With dead ends: 11124 [2024-11-16 06:47:08,181 INFO L226 Difference]: Without dead ends: 5564 [2024-11-16 06:47:08,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 775 SyntacticMatches, 102 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 06:47:08,188 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:47:08,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:47:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2024-11-16 06:47:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5564. [2024-11-16 06:47:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 5563 states have (on average 1.0181556714003235) internal successors, (5664), 5563 states have internal predecessors, (5664), 0 states have call successors, (0), 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 06:47:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 5664 transitions. [2024-11-16 06:47:08,553 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 5664 transitions. Word has length 414 [2024-11-16 06:47:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:47:08,553 INFO L471 AbstractCegarLoop]: Abstraction has 5564 states and 5664 transitions. [2024-11-16 06:47:08,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.890909090909091) internal successors, (269), 55 states have internal predecessors, (269), 0 states have call successors, (0), 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 06:47:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 5664 transitions. [2024-11-16 06:47:08,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-16 06:47:08,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:47:08,555 INFO L215 NwaCegarLoop]: trace histogram [103, 103, 102, 52, 51, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:47:08,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 06:47:08,759 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,SelfDestructingSolverStorable12 [2024-11-16 06:47:08,760 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:47:08,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:47:08,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1508728807, now seen corresponding path program 11 times [2024-11-16 06:47:08,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:47:08,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715488191] [2024-11-16 06:47:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:47:08,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:47:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:47:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 15457 proven. 199 refuted. 0 times theorem prover too weak. 5356 trivial. 0 not checked. [2024-11-16 06:47:10,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:47:10,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715488191] [2024-11-16 06:47:10,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715488191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:47:10,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694954508] [2024-11-16 06:47:10,387 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:47:10,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:47:10,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:47:10,388 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) [2024-11-16 06:47:10,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 06:47:10,563 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2024-11-16 06:47:10,563 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:47:10,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-16 06:47:10,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:47:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 15656 proven. 0 refuted. 0 times theorem prover too weak. 5356 trivial. 0 not checked. [2024-11-16 06:47:10,738 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:47:10,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694954508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:47:10,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:47:10,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [53] total 54 [2024-11-16 06:47:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094696875] [2024-11-16 06:47:10,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:47:10,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-16 06:47:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:47:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-16 06:47:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1481, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:47:10,741 INFO L87 Difference]: Start difference. First operand 5564 states and 5664 transitions. Second operand has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 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 06:47:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:47:10,971 INFO L93 Difference]: Finished difference Result 5564 states and 5664 transitions. [2024-11-16 06:47:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-16 06:47:10,971 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 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 418 [2024-11-16 06:47:10,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:47:10,973 INFO L225 Difference]: With dead ends: 5564 [2024-11-16 06:47:10,973 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 06:47:10,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1381, Invalid=1481, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:47:10,978 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:47:10,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:47:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 06:47:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 06:47:10,979 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 06:47:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 06:47:10,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 418 [2024-11-16 06:47:10,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:47:10,980 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 06:47:10,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 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 06:47:10,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 06:47:10,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 06:47:10,982 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 06:47:11,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 06:47:11,186 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,SelfDestructingSolverStorable13 [2024-11-16 06:47:11,189 INFO L407 BasicCegarLoop]: Path program histogram: [11, 1, 1, 1] [2024-11-16 06:47:11,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 06:47:13,826 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 06:47:13,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 06:47:13 BoogieIcfgContainer [2024-11-16 06:47:13,858 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 06:47:13,859 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 06:47:13,859 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 06:47:13,859 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 06:47:13,859 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:46:42" (3/4) ... [2024-11-16 06:47:13,863 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 06:47:13,874 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-16 06:47:13,874 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 06:47:13,874 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 06:47:13,874 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 06:47:14,006 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 06:47:14,009 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 06:47:14,010 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 06:47:14,010 INFO L158 Benchmark]: Toolchain (without parser) took 31615.47ms. Allocated memory was 134.2MB in the beginning and 1.1GB in the end (delta: 918.6MB). Free memory was 65.5MB in the beginning and 554.2MB in the end (delta: -488.8MB). Peak memory consumption was 431.6MB. Max. memory is 16.1GB. [2024-11-16 06:47:14,010 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory was 103.1MB in the beginning and 103.1MB in the end (delta: 32.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:47:14,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.51ms. Allocated memory was 134.2MB in the beginning and 262.1MB in the end (delta: 127.9MB). Free memory was 65.2MB in the beginning and 231.8MB in the end (delta: -166.6MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2024-11-16 06:47:14,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.37ms. Allocated memory is still 262.1MB. Free memory was 231.8MB in the beginning and 229.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:47:14,011 INFO L158 Benchmark]: Boogie Preprocessor took 18.68ms. Allocated memory is still 262.1MB. Free memory was 229.7MB in the beginning and 228.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:47:14,011 INFO L158 Benchmark]: IcfgBuilder took 192.25ms. Allocated memory is still 262.1MB. Free memory was 228.6MB in the beginning and 217.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-16 06:47:14,012 INFO L158 Benchmark]: TraceAbstraction took 31014.15ms. Allocated memory was 262.1MB in the beginning and 1.1GB in the end (delta: 790.6MB). Free memory was 217.1MB in the beginning and 558.4MB in the end (delta: -341.4MB). Peak memory consumption was 619.1MB. Max. memory is 16.1GB. [2024-11-16 06:47:14,013 INFO L158 Benchmark]: Witness Printer took 150.80ms. Allocated memory is still 1.1GB. Free memory was 558.4MB in the beginning and 554.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 06:47:14,015 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory was 103.1MB in the beginning and 103.1MB in the end (delta: 32.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.51ms. Allocated memory was 134.2MB in the beginning and 262.1MB in the end (delta: 127.9MB). Free memory was 65.2MB in the beginning and 231.8MB in the end (delta: -166.6MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.37ms. Allocated memory is still 262.1MB. Free memory was 231.8MB in the beginning and 229.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.68ms. Allocated memory is still 262.1MB. Free memory was 229.7MB in the beginning and 228.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 192.25ms. Allocated memory is still 262.1MB. Free memory was 228.6MB in the beginning and 217.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 31014.15ms. Allocated memory was 262.1MB in the beginning and 1.1GB in the end (delta: 790.6MB). Free memory was 217.1MB in the beginning and 558.4MB in the end (delta: -341.4MB). Peak memory consumption was 619.1MB. Max. memory is 16.1GB. * Witness Printer took 150.80ms. Allocated memory is still 1.1GB. Free memory was 558.4MB in the beginning and 554.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 19]: 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, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.3s, OverallIterations: 14, TraceHistogramMax: 103, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 10307 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9796 mSDsCounter, 168 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10327 IncrementalHoareTripleChecker+Invalid, 10495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 168 mSolverCounterUnsat, 511 mSDtfsCounter, 10327 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4039 GetRequests, 3354 SyntacticMatches, 157 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13217 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5564occurred in iteration=13, InterpolantAutomatonStates: 464, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 1211 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 4047 NumberOfCodeBlocks, 3899 NumberOfCodeBlocksAsserted, 257 NumberOfCheckSat, 5604 ConstructedInterpolants, 0 QuantifiedInterpolants, 13972 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3889 ConjunctsInSsa, 416 ConjunctsInUnsatCore, 35 InterpolantComputations, 4 PerfectInterpolantSequences, 132839/203328 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: 28]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-16 06:47:14,051 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