./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:58:00,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:58:00,987 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:58:00,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:58:00,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:58:01,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:58:01,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:58:01,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:58:01,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:58:01,023 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:58:01,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:58:01,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:58:01,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:58:01,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:58:01,027 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:58:01,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:58:01,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:58:01,028 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:58:01,028 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:58:01,028 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:58:01,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:58:01,033 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:58:01,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:58:01,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:58:01,034 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:58:01,034 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:58:01,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:58:01,034 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:58:01,034 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:58:01,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:58:01,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:58:01,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:58:01,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:58:01,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:58:01,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:58:01,036 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:58:01,037 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:58:01,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:58:01,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:58:01,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:58:01,039 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:58:01,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:58:01,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 [2024-11-16 06:58:01,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:58:01,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:58:01,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:58:01,327 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:58:01,328 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:58:01,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2024-11-16 06:58:02,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:58:02,936 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:58:02,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2024-11-16 06:58:02,944 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef63f9f3/a3acd8271cb34a668eabdeef6ee6b3eb/FLAG61dc01d95 [2024-11-16 06:58:02,959 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef63f9f3/a3acd8271cb34a668eabdeef6ee6b3eb [2024-11-16 06:58:02,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:58:02,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:58:02,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:58:02,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:58:02,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:58:02,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:58:02" (1/1) ... [2024-11-16 06:58:02,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f69149c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:02, skipping insertion in model container [2024-11-16 06:58:02,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:58:02" (1/1) ... [2024-11-16 06:58:02,992 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:58:03,156 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/nla-digbench-scaling/cohendiv-ll_unwindbound10.c[576,589] [2024-11-16 06:58:03,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:58:03,182 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:58:03,194 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/nla-digbench-scaling/cohendiv-ll_unwindbound10.c[576,589] [2024-11-16 06:58:03,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:58:03,215 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:58:03,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03 WrapperNode [2024-11-16 06:58:03,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:58:03,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:58:03,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:58:03,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:58:03,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,249 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-11-16 06:58:03,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:58:03,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:58:03,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:58:03,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:58:03,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,261 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,272 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 06:58:03,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,275 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:58:03,279 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:58:03,280 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:58:03,280 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:58:03,280 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (1/1) ... [2024-11-16 06:58:03,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:58:03,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:03,316 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 06:58:03,320 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 06:58:03,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:58:03,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:58:03,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:58:03,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:58:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 06:58:03,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 06:58:03,437 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:58:03,439 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:58:03,603 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-16 06:58:03,603 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:58:03,619 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:58:03,619 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:58:03,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:58:03 BoogieIcfgContainer [2024-11-16 06:58:03,620 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:58:03,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:58:03,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:58:03,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:58:03,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:58:02" (1/3) ... [2024-11-16 06:58:03,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377d049a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:58:03, skipping insertion in model container [2024-11-16 06:58:03,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:03" (2/3) ... [2024-11-16 06:58:03,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377d049a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:58:03, skipping insertion in model container [2024-11-16 06:58:03,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:58:03" (3/3) ... [2024-11-16 06:58:03,630 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound10.c [2024-11-16 06:58:03,651 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:58:03,652 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:58:03,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:58:03,723 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;@3f79817, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:58:03,723 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:58:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 06:58:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-16 06:58:03,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:03,736 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:03,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:03,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:03,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2109579990, now seen corresponding path program 1 times [2024-11-16 06:58:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:03,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847568085] [2024-11-16 06:58:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:03,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:03,884 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 06:58:03,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847568085] [2024-11-16 06:58:03,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847568085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:03,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:58:03,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884340534] [2024-11-16 06:58:03,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:03,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:58:03,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:03,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:58:03,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:58:03,915 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:03,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:03,942 INFO L93 Difference]: Finished difference Result 57 states and 89 transitions. [2024-11-16 06:58:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:58:03,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 06:58:03,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:03,980 INFO L225 Difference]: With dead ends: 57 [2024-11-16 06:58:03,980 INFO L226 Difference]: Without dead ends: 26 [2024-11-16 06:58:03,984 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 06:58:03,989 INFO L432 NwaCegarLoop]: 39 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, 39 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 06:58:03,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:04,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-16 06:58:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-16 06:58:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 06:58:04,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-11-16 06:58:04,053 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 10 [2024-11-16 06:58:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:04,054 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-11-16 06:58:04,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:04,055 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-11-16 06:58:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 06:58:04,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:04,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:04,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:58:04,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:04,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash 142750984, now seen corresponding path program 1 times [2024-11-16 06:58:04,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:04,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907521679] [2024-11-16 06:58:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:04,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:04,196 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 06:58:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:04,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907521679] [2024-11-16 06:58:04,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907521679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:04,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:04,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:58:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725264901] [2024-11-16 06:58:04,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:04,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:58:04,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:58:04,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:58:04,208 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:04,246 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-11-16 06:58:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:58:04,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-16 06:58:04,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:04,248 INFO L225 Difference]: With dead ends: 36 [2024-11-16 06:58:04,249 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 06:58:04,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 06:58:04,251 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:04,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 06:58:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 06:58:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 06:58:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-11-16 06:58:04,265 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 11 [2024-11-16 06:58:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:04,266 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-11-16 06:58:04,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-11-16 06:58:04,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 06:58:04,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:04,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:04,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:58:04,268 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:04,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:04,269 INFO L85 PathProgramCache]: Analyzing trace with hash 182462387, now seen corresponding path program 1 times [2024-11-16 06:58:04,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:04,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474798852] [2024-11-16 06:58:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:04,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:58:04,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715965154] [2024-11-16 06:58:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:04,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:04,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:04,310 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 06:58:04,312 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 06:58:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:04,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:58:04,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:04,476 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 06:58:04,476 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:58:04,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474798852] [2024-11-16 06:58:04,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:58:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715965154] [2024-11-16 06:58:04,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715965154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:04,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:04,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:58:04,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511503029] [2024-11-16 06:58:04,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:04,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:58:04,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:04,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:58:04,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:58:04,481 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:04,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:04,552 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2024-11-16 06:58:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:58:04,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-16 06:58:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:04,555 INFO L225 Difference]: With dead ends: 39 [2024-11-16 06:58:04,556 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 06:58:04,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:58:04,557 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:04,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 115 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 06:58:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-16 06:58:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 06:58:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-16 06:58:04,577 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 11 [2024-11-16 06:58:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:04,577 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-16 06:58:04,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-16 06:58:04,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 06:58:04,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:04,580 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:04,595 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 06:58:04,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:04,781 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:04,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:04,781 INFO L85 PathProgramCache]: Analyzing trace with hash -566380821, now seen corresponding path program 1 times [2024-11-16 06:58:04,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:04,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729586327] [2024-11-16 06:58:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:04,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:58:04,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31141030] [2024-11-16 06:58:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:04,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:04,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:04,819 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 06:58:04,820 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 06:58:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:04,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:58:04,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:58:04,948 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:58:04,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:04,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729586327] [2024-11-16 06:58:04,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:58:04,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31141030] [2024-11-16 06:58:04,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31141030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:04,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:04,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:58:04,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704068837] [2024-11-16 06:58:04,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:04,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:58:04,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:58:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:58:04,956 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:58:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:05,037 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2024-11-16 06:58:05,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:58:05,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-16 06:58:05,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:05,039 INFO L225 Difference]: With dead ends: 52 [2024-11-16 06:58:05,039 INFO L226 Difference]: Without dead ends: 48 [2024-11-16 06:58:05,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:58:05,042 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:05,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 104 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:58:05,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-16 06:58:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2024-11-16 06:58:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-16 06:58:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2024-11-16 06:58:05,056 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 16 [2024-11-16 06:58:05,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:05,056 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2024-11-16 06:58:05,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:58:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2024-11-16 06:58:05,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 06:58:05,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:05,058 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:05,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 06:58:05,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 06:58:05,263 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:05,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:05,263 INFO L85 PathProgramCache]: Analyzing trace with hash 78884467, now seen corresponding path program 1 times [2024-11-16 06:58:05,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:05,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236484983] [2024-11-16 06:58:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:05,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:58:05,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366082564] [2024-11-16 06:58:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:05,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:05,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:05,293 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 06:58:05,294 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 06:58:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:05,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:58:05,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:58:05,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:58:05,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236484983] [2024-11-16 06:58:05,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:58:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366082564] [2024-11-16 06:58:05,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366082564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:05,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:05,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:58:05,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318960461] [2024-11-16 06:58:05,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:05,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:58:05,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:58:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:58:05,391 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 06:58:05,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:05,469 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2024-11-16 06:58:05,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:58:05,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-16 06:58:05,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:05,471 INFO L225 Difference]: With dead ends: 77 [2024-11-16 06:58:05,471 INFO L226 Difference]: Without dead ends: 74 [2024-11-16 06:58:05,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:58:05,473 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:05,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 121 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:58:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-16 06:58:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2024-11-16 06:58:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 44 states have internal predecessors, (54), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-16 06:58:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2024-11-16 06:58:05,497 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 24 [2024-11-16 06:58:05,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:05,497 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2024-11-16 06:58:05,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 06:58:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2024-11-16 06:58:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 06:58:05,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:05,499 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:05,515 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 06:58:05,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:05,703 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:05,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1561046138, now seen corresponding path program 1 times [2024-11-16 06:58:05,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:05,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622774620] [2024-11-16 06:58:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:05,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:05,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:58:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:05,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:58:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:58:05,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:05,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622774620] [2024-11-16 06:58:05,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622774620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:05,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:05,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:58:05,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487106950] [2024-11-16 06:58:05,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:05,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:58:05,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:58:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:58:05,887 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 06:58:05,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:05,923 INFO L93 Difference]: Finished difference Result 107 states and 147 transitions. [2024-11-16 06:58:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:58:05,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-16 06:58:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:05,927 INFO L225 Difference]: With dead ends: 107 [2024-11-16 06:58:05,928 INFO L226 Difference]: Without dead ends: 71 [2024-11-16 06:58:05,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:58:05,929 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:05,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 95 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-16 06:58:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-16 06:58:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 47 states have internal predecessors, (56), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-16 06:58:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 95 transitions. [2024-11-16 06:58:05,950 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 95 transitions. Word has length 27 [2024-11-16 06:58:05,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:05,951 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 95 transitions. [2024-11-16 06:58:05,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 06:58:05,951 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 95 transitions. [2024-11-16 06:58:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 06:58:05,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:05,953 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:05,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 06:58:05,953 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:05,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1097912627, now seen corresponding path program 1 times [2024-11-16 06:58:05,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:05,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512375347] [2024-11-16 06:58:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:05,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:58:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:58:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:58:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 06:58:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:58:06,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:06,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512375347] [2024-11-16 06:58:06,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512375347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:06,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:06,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 06:58:06,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775650298] [2024-11-16 06:58:06,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:06,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 06:58:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:06,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 06:58:06,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:58:06,191 INFO L87 Difference]: Start difference. First operand 71 states and 95 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 06:58:06,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:06,315 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2024-11-16 06:58:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:58:06,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-11-16 06:58:06,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:06,316 INFO L225 Difference]: With dead ends: 78 [2024-11-16 06:58:06,316 INFO L226 Difference]: Without dead ends: 75 [2024-11-16 06:58:06,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:58:06,317 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:06,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 110 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:58:06,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-16 06:58:06,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-16 06:58:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 50 states have internal predecessors, (59), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-16 06:58:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2024-11-16 06:58:06,338 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 34 [2024-11-16 06:58:06,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:06,338 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2024-11-16 06:58:06,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 06:58:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2024-11-16 06:58:06,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 06:58:06,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:06,340 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:06,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 06:58:06,341 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:06,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:06,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2002087737, now seen corresponding path program 1 times [2024-11-16 06:58:06,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:06,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294389849] [2024-11-16 06:58:06,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:06,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:58:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:58:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:58:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 06:58:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 06:58:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:58:06,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294389849] [2024-11-16 06:58:06,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294389849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:58:06,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600191205] [2024-11-16 06:58:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:06,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:06,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:06,530 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 06:58:06,531 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 06:58:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:58:06,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:58:06,690 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:58:06,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600191205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:06,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:58:06,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-16 06:58:06,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122241374] [2024-11-16 06:58:06,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:06,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:58:06,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:06,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:58:06,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:58:06,695 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 06:58:06,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:06,780 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2024-11-16 06:58:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:58:06,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-11-16 06:58:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:06,782 INFO L225 Difference]: With dead ends: 89 [2024-11-16 06:58:06,782 INFO L226 Difference]: Without dead ends: 86 [2024-11-16 06:58:06,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:58:06,783 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:06,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 160 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:58:06,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-16 06:58:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2024-11-16 06:58:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 55 states have internal predecessors, (62), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 06:58:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 105 transitions. [2024-11-16 06:58:06,798 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 105 transitions. Word has length 40 [2024-11-16 06:58:06,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:06,799 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 105 transitions. [2024-11-16 06:58:06,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 06:58:06,800 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 105 transitions. [2024-11-16 06:58:06,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 06:58:06,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:06,801 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:06,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 06:58:07,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:07,006 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:07,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:07,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1582105810, now seen corresponding path program 1 times [2024-11-16 06:58:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:07,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699238806] [2024-11-16 06:58:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:07,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:58:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:58:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:58:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 06:58:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 06:58:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:58:07,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699238806] [2024-11-16 06:58:07,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699238806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:58:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790377455] [2024-11-16 06:58:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:07,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:07,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:07,093 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 06:58:07,095 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 06:58:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:58:07,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:58:07,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:58:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:58:07,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790377455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:58:07,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:58:07,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2024-11-16 06:58:07,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897560419] [2024-11-16 06:58:07,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:58:07,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:58:07,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:58:07,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:58:07,329 INFO L87 Difference]: Start difference. First operand 81 states and 105 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-16 06:58:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:07,532 INFO L93 Difference]: Finished difference Result 252 states and 309 transitions. [2024-11-16 06:58:07,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 06:58:07,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 43 [2024-11-16 06:58:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:07,535 INFO L225 Difference]: With dead ends: 252 [2024-11-16 06:58:07,535 INFO L226 Difference]: Without dead ends: 244 [2024-11-16 06:58:07,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:58:07,538 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 91 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:07,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 168 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:58:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-16 06:58:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 225. [2024-11-16 06:58:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 145 states have (on average 1.2) internal successors, (174), 154 states have internal predecessors, (174), 55 states have call successors, (55), 24 states have call predecessors, (55), 24 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-16 06:58:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 280 transitions. [2024-11-16 06:58:07,580 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 280 transitions. Word has length 43 [2024-11-16 06:58:07,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:07,581 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 280 transitions. [2024-11-16 06:58:07,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-16 06:58:07,581 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 280 transitions. [2024-11-16 06:58:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 06:58:07,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:07,582 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:07,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 06:58:07,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:07,783 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:07,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:07,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1552885627, now seen corresponding path program 1 times [2024-11-16 06:58:07,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:07,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649109276] [2024-11-16 06:58:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:07,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:58:07,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736510645] [2024-11-16 06:58:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:07,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:07,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:07,805 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 06:58:07,806 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 06:58:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 06:58:07,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 06:58:08,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:58:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 06:58:08,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649109276] [2024-11-16 06:58:08,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:58:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736510645] [2024-11-16 06:58:08,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736510645] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 06:58:08,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:58:08,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-16 06:58:08,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713289287] [2024-11-16 06:58:08,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:08,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 06:58:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 06:58:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:58:08,402 INFO L87 Difference]: Start difference. First operand 225 states and 280 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 06:58:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:08,549 INFO L93 Difference]: Finished difference Result 244 states and 298 transitions. [2024-11-16 06:58:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:58:08,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2024-11-16 06:58:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:08,551 INFO L225 Difference]: With dead ends: 244 [2024-11-16 06:58:08,551 INFO L226 Difference]: Without dead ends: 237 [2024-11-16 06:58:08,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-16 06:58:08,554 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 26 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:08,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 101 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:58:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-16 06:58:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 172. [2024-11-16 06:58:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 113 states have (on average 1.1327433628318584) internal successors, (128), 118 states have internal predecessors, (128), 36 states have call successors, (36), 22 states have call predecessors, (36), 22 states have return successors, (36), 31 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-16 06:58:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 200 transitions. [2024-11-16 06:58:08,593 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 200 transitions. Word has length 48 [2024-11-16 06:58:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:08,593 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 200 transitions. [2024-11-16 06:58:08,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 06:58:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 200 transitions. [2024-11-16 06:58:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 06:58:08,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:08,595 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:08,614 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 06:58:08,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:08,796 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:08,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash 266626381, now seen corresponding path program 1 times [2024-11-16 06:58:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358748535] [2024-11-16 06:58:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:58:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:58:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:58:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 06:58:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 06:58:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 06:58:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-16 06:58:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-16 06:58:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-16 06:58:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,946 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-16 06:58:08,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:08,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358748535] [2024-11-16 06:58:08,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358748535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:58:08,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292802536] [2024-11-16 06:58:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:08,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:08,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:08,949 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 06:58:08,958 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 06:58:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:09,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 06:58:09,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-16 06:58:09,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:58:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-16 06:58:09,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292802536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:58:09,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:58:09,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-11-16 06:58:09,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731698980] [2024-11-16 06:58:09,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:58:09,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 06:58:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 06:58:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:58:09,190 INFO L87 Difference]: Start difference. First operand 172 states and 200 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-16 06:58:09,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:09,300 INFO L93 Difference]: Finished difference Result 184 states and 209 transitions. [2024-11-16 06:58:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:58:09,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 64 [2024-11-16 06:58:09,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:09,301 INFO L225 Difference]: With dead ends: 184 [2024-11-16 06:58:09,301 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 06:58:09,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:58:09,303 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:09,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 75 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:58:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 06:58:09,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 06:58:09,304 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 06:58:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 06:58:09,304 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2024-11-16 06:58:09,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:09,304 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 06:58:09,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-16 06:58:09,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 06:58:09,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 06:58:09,307 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 06:58:09,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 06:58:09,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:09,515 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:09,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 06:58:10,381 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 06:58:10,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 06:58:10 BoogieIcfgContainer [2024-11-16 06:58:10,400 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 06:58:10,401 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 06:58:10,401 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 06:58:10,401 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 06:58:10,402 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:58:03" (3/4) ... [2024-11-16 06:58:10,404 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 06:58:10,408 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-16 06:58:10,413 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-16 06:58:10,413 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 06:58:10,414 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 06:58:10,414 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 06:58:10,520 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 06:58:10,521 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 06:58:10,521 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 06:58:10,522 INFO L158 Benchmark]: Toolchain (without parser) took 7558.93ms. Allocated memory was 176.2MB in the beginning and 249.6MB in the end (delta: 73.4MB). Free memory was 116.9MB in the beginning and 205.3MB in the end (delta: -88.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:58:10,522 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 176.2MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:58:10,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.23ms. Allocated memory is still 176.2MB. Free memory was 116.9MB in the beginning and 103.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 06:58:10,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.67ms. Allocated memory is still 176.2MB. Free memory was 103.8MB in the beginning and 102.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:58:10,522 INFO L158 Benchmark]: Boogie Preprocessor took 28.02ms. Allocated memory is still 176.2MB. Free memory was 102.7MB in the beginning and 101.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:58:10,523 INFO L158 Benchmark]: IcfgBuilder took 340.80ms. Allocated memory is still 176.2MB. Free memory was 100.6MB in the beginning and 89.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-16 06:58:10,523 INFO L158 Benchmark]: TraceAbstraction took 6777.08ms. Allocated memory was 176.2MB in the beginning and 249.6MB in the end (delta: 73.4MB). Free memory was 88.7MB in the beginning and 210.5MB in the end (delta: -121.9MB). Peak memory consumption was 94.7MB. Max. memory is 16.1GB. [2024-11-16 06:58:10,523 INFO L158 Benchmark]: Witness Printer took 119.83ms. Allocated memory is still 249.6MB. Free memory was 210.5MB in the beginning and 205.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-16 06:58:10,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 176.2MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.23ms. Allocated memory is still 176.2MB. Free memory was 116.9MB in the beginning and 103.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.67ms. Allocated memory is still 176.2MB. Free memory was 103.8MB in the beginning and 102.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.02ms. Allocated memory is still 176.2MB. Free memory was 102.7MB in the beginning and 101.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 340.80ms. Allocated memory is still 176.2MB. Free memory was 100.6MB in the beginning and 89.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6777.08ms. Allocated memory was 176.2MB in the beginning and 249.6MB in the end (delta: 73.4MB). Free memory was 88.7MB in the beginning and 210.5MB in the end (delta: -121.9MB). Peak memory consumption was 94.7MB. Max. memory is 16.1GB. * Witness Printer took 119.83ms. Allocated memory is still 249.6MB. Free memory was 210.5MB in the beginning and 205.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 17]: 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 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 216 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 196 mSDsluCounter, 1180 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 842 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 454 IncrementalHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 338 mSDtfsCounter, 454 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 494 GetRequests, 416 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=9, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 100 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 574 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 613 ConstructedInterpolants, 0 QuantifiedInterpolants, 1597 SizeOfPredicates, 13 NumberOfNonLiveVariables, 719 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 905/967 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: 46]: Location Invariant Derived location invariant: null - InvariantResult [Line: 37]: Location Invariant Derived location invariant: null - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: ((cond != 0) && (counter == \old(counter))) RESULT: Ultimate proved your program to be correct! [2024-11-16 06:58:10,546 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