./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.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 74e9855722264d342377b8ab219a69c32c582cc628f82167488f3dea5640534c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 02:18:33,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 02:18:33,917 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 02:18:33,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 02:18:33,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 02:18:33,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 02:18:33,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 02:18:33,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 02:18:33,946 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 02:18:33,947 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 02:18:33,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 02:18:33,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 02:18:33,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 02:18:33,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 02:18:33,949 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 02:18:33,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 02:18:33,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 02:18:33,950 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 02:18:33,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 02:18:33,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 02:18:33,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 02:18:33,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 02:18:33,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 02:18:33,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 02:18:33,954 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 02:18:33,954 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 02:18:33,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 02:18:33,955 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 02:18:33,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 02:18:33,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 02:18:33,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 02:18:33,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 02:18:33,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:18:33,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 02:18:33,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 02:18:33,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 02:18:33,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 02:18:33,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 02:18:33,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 02:18:33,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 02:18:33,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 02:18:33,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 02:18:33,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e9855722264d342377b8ab219a69c32c582cc628f82167488f3dea5640534c [2024-10-14 02:18:34,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 02:18:34,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 02:18:34,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 02:18:34,192 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 02:18:34,192 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 02:18:34,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2024-10-14 02:18:35,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 02:18:35,563 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 02:18:35,564 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2024-10-14 02:18:35,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a598db8e9/9ae8cd4b829a43319b8e35230e036c02/FLAG9feca146e [2024-10-14 02:18:35,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a598db8e9/9ae8cd4b829a43319b8e35230e036c02 [2024-10-14 02:18:35,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 02:18:35,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 02:18:35,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 02:18:35,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 02:18:35,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 02:18:35,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:18:35" (1/1) ... [2024-10-14 02:18:35,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28359888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:35, skipping insertion in model container [2024-10-14 02:18:35,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:18:35" (1/1) ... [2024-10-14 02:18:35,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 02:18:36,114 WARN L248 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/egcd2-ll_unwindbound5.c[490,503] [2024-10-14 02:18:36,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:18:36,150 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 02:18:36,159 WARN L248 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/egcd2-ll_unwindbound5.c[490,503] [2024-10-14 02:18:36,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:18:36,186 INFO L204 MainTranslator]: Completed translation [2024-10-14 02:18:36,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36 WrapperNode [2024-10-14 02:18:36,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 02:18:36,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 02:18:36,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 02:18:36,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 02:18:36,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,217 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2024-10-14 02:18:36,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 02:18:36,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 02:18:36,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 02:18:36,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 02:18:36,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,227 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,237 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]. [2024-10-14 02:18:36,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,242 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 02:18:36,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 02:18:36,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 02:18:36,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 02:18:36,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (1/1) ... [2024-10-14 02:18:36,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:18:36,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:36,280 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) [2024-10-14 02:18:36,283 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 [2024-10-14 02:18:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 02:18:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 02:18:36,317 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 02:18:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 02:18:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 02:18:36,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 02:18:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 02:18:36,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 02:18:36,371 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 02:18:36,372 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 02:18:36,489 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-14 02:18:36,489 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 02:18:36,514 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 02:18:36,514 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 02:18:36,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:18:36 BoogieIcfgContainer [2024-10-14 02:18:36,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 02:18:36,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 02:18:36,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 02:18:36,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 02:18:36,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:18:35" (1/3) ... [2024-10-14 02:18:36,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9d2ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:18:36, skipping insertion in model container [2024-10-14 02:18:36,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:36" (2/3) ... [2024-10-14 02:18:36,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9d2ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:18:36, skipping insertion in model container [2024-10-14 02:18:36,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:18:36" (3/3) ... [2024-10-14 02:18:36,527 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound5.c [2024-10-14 02:18:36,541 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 02:18:36,542 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 02:18:36,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 02:18:36,604 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;@7d13975b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 02:18:36,604 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 02:18:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-14 02:18:36,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 02:18:36,615 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:36,616 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:36,616 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:36,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash -689848145, now seen corresponding path program 1 times [2024-10-14 02:18:36,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:36,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224074051] [2024-10-14 02:18:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:36,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:36,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:36,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 02:18:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:36,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:36,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 02:18:36,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:36,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224074051] [2024-10-14 02:18:36,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224074051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:18:36,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:18:36,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 02:18:36,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262984880] [2024-10-14 02:18:36,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:36,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 02:18:36,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:36,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 02:18:36,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 02:18:36,778 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-14 02:18:36,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:36,795 INFO L93 Difference]: Finished difference Result 60 states and 99 transitions. [2024-10-14 02:18:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 02:18:36,797 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-10-14 02:18:36,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:36,801 INFO L225 Difference]: With dead ends: 60 [2024-10-14 02:18:36,801 INFO L226 Difference]: Without dead ends: 29 [2024-10-14 02:18:36,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 02:18:36,805 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:36,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:18:36,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-14 02:18:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-14 02:18:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-14 02:18:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2024-10-14 02:18:36,837 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 27 [2024-10-14 02:18:36,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:36,838 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2024-10-14 02:18:36,838 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-14 02:18:36,838 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2024-10-14 02:18:36,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 02:18:36,839 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:36,839 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:36,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 02:18:36,839 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:36,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1989097615, now seen corresponding path program 1 times [2024-10-14 02:18:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:36,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402226296] [2024-10-14 02:18:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:36,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 02:18:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 02:18:37,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:37,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402226296] [2024-10-14 02:18:37,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402226296] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:18:37,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:18:37,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 02:18:37,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683089758] [2024-10-14 02:18:37,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:37,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:18:37,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:37,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:18:37,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 02:18:37,046 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 02:18:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:37,073 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2024-10-14 02:18:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 02:18:37,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2024-10-14 02:18:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:37,077 INFO L225 Difference]: With dead ends: 39 [2024-10-14 02:18:37,077 INFO L226 Difference]: Without dead ends: 31 [2024-10-14 02:18:37,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 02:18:37,078 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:37,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 97 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:18:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-14 02:18:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-14 02:18:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-14 02:18:37,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2024-10-14 02:18:37,089 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 28 [2024-10-14 02:18:37,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:37,090 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2024-10-14 02:18:37,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 02:18:37,091 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2024-10-14 02:18:37,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-14 02:18:37,091 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:37,091 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:37,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 02:18:37,092 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:37,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:37,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1539070609, now seen corresponding path program 1 times [2024-10-14 02:18:37,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:37,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375305995] [2024-10-14 02:18:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 02:18:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-14 02:18:37,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:37,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375305995] [2024-10-14 02:18:37,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375305995] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:37,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235258842] [2024-10-14 02:18:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:37,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:37,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:37,264 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) [2024-10-14 02:18:37,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 02:18:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 02:18:37,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 02:18:37,456 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:18:37,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235258842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:18:37,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:18:37,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-10-14 02:18:37,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493202143] [2024-10-14 02:18:37,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:37,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 02:18:37,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 02:18:37,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-14 02:18:37,458 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-14 02:18:37,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:37,540 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-10-14 02:18:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 02:18:37,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-10-14 02:18:37,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:37,542 INFO L225 Difference]: With dead ends: 48 [2024-10-14 02:18:37,543 INFO L226 Difference]: Without dead ends: 46 [2024-10-14 02:18:37,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:18:37,545 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:37,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 138 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:18:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-14 02:18:37,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-10-14 02:18:37,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.32) internal successors, (33), 27 states have internal predecessors, (33), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-14 02:18:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions. [2024-10-14 02:18:37,556 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 29 [2024-10-14 02:18:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:37,557 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 62 transitions. [2024-10-14 02:18:37,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-14 02:18:37,557 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions. [2024-10-14 02:18:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-14 02:18:37,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:37,558 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:37,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 02:18:37,758 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 [2024-10-14 02:18:37,759 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:37,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:37,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1634889762, now seen corresponding path program 1 times [2024-10-14 02:18:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:37,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246060742] [2024-10-14 02:18:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:37,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568840897] [2024-10-14 02:18:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:37,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:37,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:37,780 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) [2024-10-14 02:18:37,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 02:18:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:37,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 02:18:37,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 02:18:37,900 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:18:37,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:37,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246060742] [2024-10-14 02:18:37,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:18:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568840897] [2024-10-14 02:18:37,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568840897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:18:37,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:18:37,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:18:37,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767287688] [2024-10-14 02:18:37,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:37,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:18:37,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:37,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:18:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:18:37,904 INFO L87 Difference]: Start difference. First operand 44 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 02:18:37,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:37,950 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2024-10-14 02:18:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:18:37,950 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2024-10-14 02:18:37,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:37,954 INFO L225 Difference]: With dead ends: 65 [2024-10-14 02:18:37,955 INFO L226 Difference]: Without dead ends: 63 [2024-10-14 02:18:37,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:18:37,956 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:37,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:18:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-14 02:18:37,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-10-14 02:18:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.3125) internal successors, (42), 36 states have internal predecessors, (42), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 02:18:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 75 transitions. [2024-10-14 02:18:37,973 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 75 transitions. Word has length 31 [2024-10-14 02:18:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:37,974 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 75 transitions. [2024-10-14 02:18:37,974 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 02:18:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 75 transitions. [2024-10-14 02:18:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 02:18:37,975 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:37,975 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:37,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 02:18:38,179 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 [2024-10-14 02:18:38,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:38,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:38,180 INFO L85 PathProgramCache]: Analyzing trace with hash -254153455, now seen corresponding path program 1 times [2024-10-14 02:18:38,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:38,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110125285] [2024-10-14 02:18:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:38,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 02:18:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-14 02:18:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-14 02:18:38,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110125285] [2024-10-14 02:18:38,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110125285] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987225688] [2024-10-14 02:18:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:38,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:38,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:38,275 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) [2024-10-14 02:18:38,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 02:18:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 02:18:38,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 02:18:38,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:18:38,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987225688] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:18:38,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:18:38,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-10-14 02:18:38,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789313969] [2024-10-14 02:18:38,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:38,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:18:38,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:38,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:18:38,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-14 02:18:38,392 INFO L87 Difference]: Start difference. First operand 54 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 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) [2024-10-14 02:18:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:38,447 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2024-10-14 02:18:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:18:38,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 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 34 [2024-10-14 02:18:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:38,448 INFO L225 Difference]: With dead ends: 62 [2024-10-14 02:18:38,449 INFO L226 Difference]: Without dead ends: 58 [2024-10-14 02:18:38,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-14 02:18:38,450 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:38,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 135 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:18:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-14 02:18:38,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-10-14 02:18:38,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 38 states have internal predecessors, (44), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 02:18:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2024-10-14 02:18:38,462 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 34 [2024-10-14 02:18:38,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:38,463 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2024-10-14 02:18:38,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 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) [2024-10-14 02:18:38,463 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2024-10-14 02:18:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 02:18:38,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:38,465 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:38,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 02:18:38,665 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 [2024-10-14 02:18:38,666 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:38,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash 753217482, now seen corresponding path program 1 times [2024-10-14 02:18:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334490426] [2024-10-14 02:18:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 02:18:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 02:18:38,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:38,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334490426] [2024-10-14 02:18:38,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334490426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:18:38,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:18:38,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 02:18:38,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621188247] [2024-10-14 02:18:38,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:38,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 02:18:38,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:38,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 02:18:38,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:18:38,753 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 02:18:38,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:38,786 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2024-10-14 02:18:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 02:18:38,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2024-10-14 02:18:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:38,787 INFO L225 Difference]: With dead ends: 83 [2024-10-14 02:18:38,787 INFO L226 Difference]: Without dead ends: 57 [2024-10-14 02:18:38,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:18:38,788 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 10 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:38,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 120 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:18:38,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-14 02:18:38,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-14 02:18:38,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 38 states have internal predecessors, (43), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 02:18:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-10-14 02:18:38,800 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 34 [2024-10-14 02:18:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:38,800 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-10-14 02:18:38,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 02:18:38,801 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-10-14 02:18:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-14 02:18:38,801 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:38,801 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:38,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 02:18:38,802 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:38,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:38,802 INFO L85 PathProgramCache]: Analyzing trace with hash 439925314, now seen corresponding path program 1 times [2024-10-14 02:18:38,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:38,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090142494] [2024-10-14 02:18:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:38,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:38,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756659865] [2024-10-14 02:18:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:38,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:38,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:38,817 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) [2024-10-14 02:18:38,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 02:18:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:38,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 02:18:38,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 02:18:39,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:18:39,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:39,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090142494] [2024-10-14 02:18:39,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:18:39,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756659865] [2024-10-14 02:18:39,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756659865] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:18:39,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:18:39,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:18:39,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40442590] [2024-10-14 02:18:39,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:39,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:18:39,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:39,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:18:39,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:18:39,005 INFO L87 Difference]: Start difference. First operand 57 states and 74 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-14 02:18:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:39,074 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-10-14 02:18:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:18:39,077 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2024-10-14 02:18:39,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:39,078 INFO L225 Difference]: With dead ends: 64 [2024-10-14 02:18:39,078 INFO L226 Difference]: Without dead ends: 62 [2024-10-14 02:18:39,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:18:39,079 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:39,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 123 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:18:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-14 02:18:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-10-14 02:18:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 41 states have internal predecessors, (46), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 02:18:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2024-10-14 02:18:39,093 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 46 [2024-10-14 02:18:39,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:39,093 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2024-10-14 02:18:39,093 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-14 02:18:39,093 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2024-10-14 02:18:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-14 02:18:39,094 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:39,095 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:39,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 02:18:39,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:39,299 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:39,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:39,299 INFO L85 PathProgramCache]: Analyzing trace with hash -982723610, now seen corresponding path program 1 times [2024-10-14 02:18:39,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:39,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335603678] [2024-10-14 02:18:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:39,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:39,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894270071] [2024-10-14 02:18:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:39,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:39,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:39,325 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) [2024-10-14 02:18:39,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 02:18:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 02:18:39,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 02:18:39,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-14 02:18:39,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335603678] [2024-10-14 02:18:39,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:18:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894270071] [2024-10-14 02:18:39,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894270071] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:39,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:18:39,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-14 02:18:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131171282] [2024-10-14 02:18:39,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:39,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:18:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:39,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:18:39,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 02:18:39,522 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-14 02:18:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:39,563 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2024-10-14 02:18:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:18:39,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2024-10-14 02:18:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:39,564 INFO L225 Difference]: With dead ends: 67 [2024-10-14 02:18:39,564 INFO L226 Difference]: Without dead ends: 65 [2024-10-14 02:18:39,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:18:39,564 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:39,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 117 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:18:39,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-14 02:18:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2024-10-14 02:18:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 37 states have internal predecessors, (43), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 02:18:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2024-10-14 02:18:39,576 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 54 [2024-10-14 02:18:39,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:39,576 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2024-10-14 02:18:39,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-14 02:18:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2024-10-14 02:18:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-14 02:18:39,577 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:39,578 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:39,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 02:18:39,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:39,783 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:39,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:39,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1428774585, now seen corresponding path program 1 times [2024-10-14 02:18:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:39,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165679634] [2024-10-14 02:18:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 02:18:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-14 02:18:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 02:18:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 02:18:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-14 02:18:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 02:18:39,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:39,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165679634] [2024-10-14 02:18:39,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165679634] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:39,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58106881] [2024-10-14 02:18:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:39,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:39,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:39,941 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) [2024-10-14 02:18:39,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 02:18:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:39,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 02:18:39,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 02:18:40,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 02:18:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58106881] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:18:40,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:18:40,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 11 [2024-10-14 02:18:40,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774979192] [2024-10-14 02:18:40,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:18:40,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 02:18:40,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 02:18:40,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:18:40,131 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-10-14 02:18:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:40,243 INFO L93 Difference]: Finished difference Result 168 states and 197 transitions. [2024-10-14 02:18:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 02:18:40,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 55 [2024-10-14 02:18:40,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:40,245 INFO L225 Difference]: With dead ends: 168 [2024-10-14 02:18:40,245 INFO L226 Difference]: Without dead ends: 160 [2024-10-14 02:18:40,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-14 02:18:40,246 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 56 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:40,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 180 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:18:40,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-14 02:18:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2024-10-14 02:18:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 102 states have internal predecessors, (117), 34 states have call successors, (34), 20 states have call predecessors, (34), 20 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-14 02:18:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 182 transitions. [2024-10-14 02:18:40,270 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 182 transitions. Word has length 55 [2024-10-14 02:18:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:40,270 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 182 transitions. [2024-10-14 02:18:40,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-10-14 02:18:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 182 transitions. [2024-10-14 02:18:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 02:18:40,271 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:40,271 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:40,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 02:18:40,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:40,472 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:40,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:40,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1348925863, now seen corresponding path program 1 times [2024-10-14 02:18:40,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:40,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171052289] [2024-10-14 02:18:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:40,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:40,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:40,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 02:18:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:40,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:40,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:40,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-14 02:18:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:40,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 02:18:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:40,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 02:18:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:40,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-14 02:18:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-14 02:18:40,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:40,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171052289] [2024-10-14 02:18:40,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171052289] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:40,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410310332] [2024-10-14 02:18:40,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:40,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:40,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:40,586 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) [2024-10-14 02:18:40,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 02:18:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:40,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 02:18:40,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:40,676 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-14 02:18:40,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-14 02:18:40,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410310332] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:18:40,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:18:40,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-10-14 02:18:40,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973409964] [2024-10-14 02:18:40,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:18:40,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 02:18:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:40,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 02:18:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-14 02:18:40,748 INFO L87 Difference]: Start difference. First operand 154 states and 182 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-14 02:18:40,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:40,894 INFO L93 Difference]: Finished difference Result 220 states and 287 transitions. [2024-10-14 02:18:40,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 02:18:40,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2024-10-14 02:18:40,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:40,897 INFO L225 Difference]: With dead ends: 220 [2024-10-14 02:18:40,898 INFO L226 Difference]: Without dead ends: 206 [2024-10-14 02:18:40,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:18:40,899 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 57 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:40,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 329 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:18:40,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-10-14 02:18:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 184. [2024-10-14 02:18:40,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.2166666666666666) internal successors, (146), 122 states have internal predecessors, (146), 44 states have call successors, (44), 19 states have call predecessors, (44), 19 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-14 02:18:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 232 transitions. [2024-10-14 02:18:40,930 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 232 transitions. Word has length 56 [2024-10-14 02:18:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:40,931 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 232 transitions. [2024-10-14 02:18:40,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-14 02:18:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 232 transitions. [2024-10-14 02:18:40,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-14 02:18:40,934 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:40,934 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:40,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 02:18:41,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:41,135 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:41,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:41,135 INFO L85 PathProgramCache]: Analyzing trace with hash -848672706, now seen corresponding path program 1 times [2024-10-14 02:18:41,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:41,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037391630] [2024-10-14 02:18:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:41,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 02:18:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-14 02:18:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 02:18:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 02:18:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-14 02:18:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 02:18:41,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037391630] [2024-10-14 02:18:41,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037391630] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:41,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589418346] [2024-10-14 02:18:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:41,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:41,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:18:41,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 02:18:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 02:18:41,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 02:18:41,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 02:18:41,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589418346] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:18:41,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:18:41,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 11 [2024-10-14 02:18:41,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604708194] [2024-10-14 02:18:41,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:18:41,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 02:18:41,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:41,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 02:18:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:18:41,371 INFO L87 Difference]: Start difference. First operand 184 states and 232 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-10-14 02:18:41,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:41,478 INFO L93 Difference]: Finished difference Result 264 states and 345 transitions. [2024-10-14 02:18:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 02:18:41,479 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 58 [2024-10-14 02:18:41,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:41,480 INFO L225 Difference]: With dead ends: 264 [2024-10-14 02:18:41,480 INFO L226 Difference]: Without dead ends: 192 [2024-10-14 02:18:41,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:18:41,483 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 43 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:41,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 140 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:18:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-14 02:18:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2024-10-14 02:18:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 128 states have internal predecessors, (149), 44 states have call successors, (44), 19 states have call predecessors, (44), 19 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-14 02:18:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 235 transitions. [2024-10-14 02:18:41,502 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 235 transitions. Word has length 58 [2024-10-14 02:18:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:41,503 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 235 transitions. [2024-10-14 02:18:41,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-10-14 02:18:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 235 transitions. [2024-10-14 02:18:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-14 02:18:41,503 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:41,503 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:41,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 02:18:41,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 02:18:41,704 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:41,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash -421956392, now seen corresponding path program 1 times [2024-10-14 02:18:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382160263] [2024-10-14 02:18:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:41,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:41,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497776643] [2024-10-14 02:18:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:41,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:41,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:41,717 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:18:41,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 02:18:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:41,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 02:18:41,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-14 02:18:41,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-14 02:18:42,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:42,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382160263] [2024-10-14 02:18:42,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:18:42,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497776643] [2024-10-14 02:18:42,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497776643] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:18:42,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:18:42,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 12 [2024-10-14 02:18:42,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118909153] [2024-10-14 02:18:42,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:18:42,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 02:18:42,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:42,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 02:18:42,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:18:42,057 INFO L87 Difference]: Start difference. First operand 190 states and 235 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-10-14 02:18:42,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:42,203 INFO L93 Difference]: Finished difference Result 222 states and 281 transitions. [2024-10-14 02:18:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 02:18:42,203 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-10-14 02:18:42,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:42,204 INFO L225 Difference]: With dead ends: 222 [2024-10-14 02:18:42,205 INFO L226 Difference]: Without dead ends: 218 [2024-10-14 02:18:42,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:18:42,205 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 41 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:42,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 307 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:18:42,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-10-14 02:18:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2024-10-14 02:18:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 142 states have (on average 1.204225352112676) internal successors, (171), 145 states have internal predecessors, (171), 52 states have call successors, (52), 21 states have call predecessors, (52), 21 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-14 02:18:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 272 transitions. [2024-10-14 02:18:42,222 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 272 transitions. Word has length 63 [2024-10-14 02:18:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:42,222 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 272 transitions. [2024-10-14 02:18:42,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-10-14 02:18:42,222 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 272 transitions. [2024-10-14 02:18:42,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-14 02:18:42,223 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:42,223 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:42,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 02:18:42,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:42,427 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:42,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:42,428 INFO L85 PathProgramCache]: Analyzing trace with hash -245166072, now seen corresponding path program 2 times [2024-10-14 02:18:42,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:42,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037935104] [2024-10-14 02:18:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:42,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:42,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625899466] [2024-10-14 02:18:42,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 02:18:42,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:42,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:42,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:18:42,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 02:18:42,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 02:18:42,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:18:42,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 02:18:42,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-14 02:18:42,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-14 02:18:43,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:43,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037935104] [2024-10-14 02:18:43,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:18:43,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625899466] [2024-10-14 02:18:43,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625899466] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:18:43,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:18:43,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2024-10-14 02:18:43,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381274229] [2024-10-14 02:18:43,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:18:43,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 02:18:43,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:43,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 02:18:43,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-10-14 02:18:43,056 INFO L87 Difference]: Start difference. First operand 216 states and 272 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-10-14 02:18:44,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:44,168 INFO L93 Difference]: Finished difference Result 370 states and 515 transitions. [2024-10-14 02:18:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 02:18:44,169 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 68 [2024-10-14 02:18:44,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:44,171 INFO L225 Difference]: With dead ends: 370 [2024-10-14 02:18:44,171 INFO L226 Difference]: Without dead ends: 368 [2024-10-14 02:18:44,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2024-10-14 02:18:44,174 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 120 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:44,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 327 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 02:18:44,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-10-14 02:18:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 323. [2024-10-14 02:18:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 209 states have (on average 1.277511961722488) internal successors, (267), 212 states have internal predecessors, (267), 88 states have call successors, (88), 25 states have call predecessors, (88), 25 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-10-14 02:18:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 440 transitions. [2024-10-14 02:18:44,223 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 440 transitions. Word has length 68 [2024-10-14 02:18:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:44,223 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 440 transitions. [2024-10-14 02:18:44,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-10-14 02:18:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 440 transitions. [2024-10-14 02:18:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-14 02:18:44,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:44,224 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:44,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-14 02:18:44,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 02:18:44,430 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:44,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:44,430 INFO L85 PathProgramCache]: Analyzing trace with hash -441972072, now seen corresponding path program 3 times [2024-10-14 02:18:44,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:44,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230413595] [2024-10-14 02:18:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:44,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:44,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747181803] [2024-10-14 02:18:44,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 02:18:44,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:44,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:44,445 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:18:44,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 02:18:44,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 02:18:44,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:18:44,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-14 02:18:44,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 42 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-14 02:18:45,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:19:04,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:19:04,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230413595] [2024-10-14 02:19:04,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:19:04,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747181803] [2024-10-14 02:19:04,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747181803] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:19:04,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:19:04,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-10-14 02:19:04,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367131654] [2024-10-14 02:19:04,678 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 02:19:04,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 02:19:04,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:19:04,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 02:19:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-10-14 02:19:04,679 INFO L87 Difference]: Start difference. First operand 323 states and 440 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-14 02:19:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:19:05,379 INFO L93 Difference]: Finished difference Result 338 states and 453 transitions. [2024-10-14 02:19:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 02:19:05,379 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 73 [2024-10-14 02:19:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:19:05,381 INFO L225 Difference]: With dead ends: 338 [2024-10-14 02:19:05,381 INFO L226 Difference]: Without dead ends: 334 [2024-10-14 02:19:05,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2024-10-14 02:19:05,382 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 47 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 02:19:05,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 274 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 02:19:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-10-14 02:19:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 333. [2024-10-14 02:19:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 217 states have (on average 1.262672811059908) internal successors, (274), 219 states have internal predecessors, (274), 88 states have call successors, (88), 28 states have call predecessors, (88), 27 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-10-14 02:19:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 447 transitions. [2024-10-14 02:19:05,420 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 447 transitions. Word has length 73 [2024-10-14 02:19:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:19:05,421 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 447 transitions. [2024-10-14 02:19:05,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-14 02:19:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 447 transitions. [2024-10-14 02:19:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-14 02:19:05,421 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:19:05,422 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:19:05,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 02:19:05,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 02:19:05,626 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:19:05,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:19:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2054740817, now seen corresponding path program 1 times [2024-10-14 02:19:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:19:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026044399] [2024-10-14 02:19:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:19:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:19:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:19:05,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350784478] [2024-10-14 02:19:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:19:05,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:19:05,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:19:05,647 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:19:05,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 02:19:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:05,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-14 02:19:05,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:19:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-10-14 02:19:06,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:19:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-10-14 02:19:06,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:19:06,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026044399] [2024-10-14 02:19:06,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:19:06,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350784478] [2024-10-14 02:19:06,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350784478] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:19:06,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:19:06,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-10-14 02:19:06,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794252017] [2024-10-14 02:19:06,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:19:06,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 02:19:06,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:19:06,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 02:19:06,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-10-14 02:19:06,740 INFO L87 Difference]: Start difference. First operand 333 states and 447 transitions. Second operand has 21 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-10-14 02:19:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:19:09,410 INFO L93 Difference]: Finished difference Result 549 states and 802 transitions. [2024-10-14 02:19:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 02:19:09,410 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 79 [2024-10-14 02:19:09,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:19:09,413 INFO L225 Difference]: With dead ends: 549 [2024-10-14 02:19:09,413 INFO L226 Difference]: Without dead ends: 543 [2024-10-14 02:19:09,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=296, Invalid=1264, Unknown=0, NotChecked=0, Total=1560 [2024-10-14 02:19:09,414 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 118 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-14 02:19:09,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 703 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-14 02:19:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-10-14 02:19:09,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 496. [2024-10-14 02:19:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 310 states have (on average 1.3451612903225807) internal successors, (417), 313 states have internal predecessors, (417), 156 states have call successors, (156), 29 states have call predecessors, (156), 29 states have return successors, (154), 153 states have call predecessors, (154), 154 states have call successors, (154) [2024-10-14 02:19:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 727 transitions. [2024-10-14 02:19:09,504 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 727 transitions. Word has length 79 [2024-10-14 02:19:09,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:19:09,505 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 727 transitions. [2024-10-14 02:19:09,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-10-14 02:19:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 727 transitions. [2024-10-14 02:19:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-14 02:19:09,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:19:09,506 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-10-14 02:19:09,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-14 02:19:09,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 02:19:09,706 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:19:09,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:19:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1270806006, now seen corresponding path program 1 times [2024-10-14 02:19:09,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:19:09,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582547269] [2024-10-14 02:19:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:19:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:19:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:19:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 02:19:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:19:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:19:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-14 02:19:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 02:19:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 02:19:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-14 02:19:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-14 02:19:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 02:19:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 02:19:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-14 02:19:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-14 02:19:09,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:19:09,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582547269] [2024-10-14 02:19:09,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582547269] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:19:09,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:19:09,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:19:09,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063847646] [2024-10-14 02:19:09,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:19:09,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:19:09,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:19:09,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:19:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:19:09,801 INFO L87 Difference]: Start difference. First operand 496 states and 727 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-14 02:19:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:19:09,939 INFO L93 Difference]: Finished difference Result 833 states and 1283 transitions. [2024-10-14 02:19:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 02:19:09,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2024-10-14 02:19:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:19:09,943 INFO L225 Difference]: With dead ends: 833 [2024-10-14 02:19:09,943 INFO L226 Difference]: Without dead ends: 575 [2024-10-14 02:19:09,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 02:19:09,953 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:19:09,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 175 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:19:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-10-14 02:19:10,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 480. [2024-10-14 02:19:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 298 states have (on average 1.3187919463087248) internal successors, (393), 301 states have internal predecessors, (393), 152 states have call successors, (152), 29 states have call predecessors, (152), 29 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2024-10-14 02:19:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 695 transitions. [2024-10-14 02:19:10,039 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 695 transitions. Word has length 88 [2024-10-14 02:19:10,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:19:10,039 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 695 transitions. [2024-10-14 02:19:10,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-14 02:19:10,039 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 695 transitions. [2024-10-14 02:19:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-14 02:19:10,041 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:19:10,041 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:19:10,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 02:19:10,041 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:19:10,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:19:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1858222944, now seen corresponding path program 1 times [2024-10-14 02:19:10,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:19:10,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571983054] [2024-10-14 02:19:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:19:10,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:19:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:19:10,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170013247] [2024-10-14 02:19:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:19:10,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:19:10,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:19:10,061 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:19:10,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 02:19:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:10,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-14 02:19:10,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:19:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 51 proven. 32 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-10-14 02:19:11,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:19:11,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:19:11,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571983054] [2024-10-14 02:19:11,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:19:11,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170013247] [2024-10-14 02:19:11,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170013247] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:19:11,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:19:11,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-10-14 02:19:11,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046146090] [2024-10-14 02:19:11,632 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 02:19:11,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 02:19:11,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:19:11,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 02:19:11,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-10-14 02:19:11,633 INFO L87 Difference]: Start difference. First operand 480 states and 695 transitions. Second operand has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-10-14 02:19:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:19:12,323 INFO L93 Difference]: Finished difference Result 493 states and 706 transitions. [2024-10-14 02:19:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 02:19:12,323 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 96 [2024-10-14 02:19:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:19:12,326 INFO L225 Difference]: With dead ends: 493 [2024-10-14 02:19:12,326 INFO L226 Difference]: Without dead ends: 491 [2024-10-14 02:19:12,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-10-14 02:19:12,326 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 37 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 02:19:12,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 402 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 02:19:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-10-14 02:19:12,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 488. [2024-10-14 02:19:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 304 states have (on average 1.3125) internal successors, (399), 307 states have internal predecessors, (399), 152 states have call successors, (152), 31 states have call predecessors, (152), 31 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2024-10-14 02:19:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 701 transitions. [2024-10-14 02:19:12,420 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 701 transitions. Word has length 96 [2024-10-14 02:19:12,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:19:12,420 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 701 transitions. [2024-10-14 02:19:12,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-10-14 02:19:12,421 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 701 transitions. [2024-10-14 02:19:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-14 02:19:12,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:19:12,422 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:19:12,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-14 02:19:12,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 02:19:12,627 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:19:12,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:19:12,627 INFO L85 PathProgramCache]: Analyzing trace with hash -615201371, now seen corresponding path program 1 times [2024-10-14 02:19:12,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:19:12,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465590688] [2024-10-14 02:19:12,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:19:12,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:19:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:19:12,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52278449] [2024-10-14 02:19:12,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:19:12,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:19:12,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:19:12,649 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:19:12,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 02:19:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 02:19:12,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 02:19:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 02:19:12,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 02:19:12,755 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 02:19:12,756 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 02:19:12,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 02:19:12,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:19:12,961 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:19:12,996 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 02:19:12,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 02:19:12 BoogieIcfgContainer [2024-10-14 02:19:12,998 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 02:19:12,998 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 02:19:12,998 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 02:19:12,999 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 02:19:12,999 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:18:36" (3/4) ... [2024-10-14 02:19:12,999 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-14 02:19:13,048 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 02:19:13,048 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 02:19:13,048 INFO L158 Benchmark]: Toolchain (without parser) took 37071.90ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 123.9MB in the beginning and 163.6MB in the end (delta: -39.7MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2024-10-14 02:19:13,048 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 109.1MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 02:19:13,048 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.93ms. Allocated memory is still 159.4MB. Free memory was 123.9MB in the beginning and 111.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 02:19:13,049 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.64ms. Allocated memory is still 159.4MB. Free memory was 111.3MB in the beginning and 110.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 02:19:13,049 INFO L158 Benchmark]: Boogie Preprocessor took 25.58ms. Allocated memory is still 159.4MB. Free memory was 110.2MB in the beginning and 108.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 02:19:13,049 INFO L158 Benchmark]: RCFGBuilder took 269.80ms. Allocated memory is still 159.4MB. Free memory was 108.1MB in the beginning and 131.1MB in the end (delta: -22.9MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2024-10-14 02:19:13,049 INFO L158 Benchmark]: TraceAbstraction took 36480.84ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 130.7MB in the beginning and 168.8MB in the end (delta: -38.1MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2024-10-14 02:19:13,049 INFO L158 Benchmark]: Witness Printer took 49.49ms. Allocated memory is still 232.8MB. Free memory was 168.8MB in the beginning and 163.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 02:19:13,050 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 109.1MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.93ms. Allocated memory is still 159.4MB. Free memory was 123.9MB in the beginning and 111.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.64ms. Allocated memory is still 159.4MB. Free memory was 111.3MB in the beginning and 110.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.58ms. Allocated memory is still 159.4MB. Free memory was 110.2MB in the beginning and 108.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 269.80ms. Allocated memory is still 159.4MB. Free memory was 108.1MB in the beginning and 131.1MB in the end (delta: -22.9MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * TraceAbstraction took 36480.84ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 130.7MB in the beginning and 168.8MB in the end (delta: -38.1MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. * Witness Printer took 49.49ms. Allocated memory is still 232.8MB. Free memory was 168.8MB in the beginning and 163.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=3, y=4] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=3, y=4] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y VAL [a=3, b=4, counter=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L37] CALL assume_abort_if_not(xy < 2147483647) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L37] RET assume_abort_if_not(xy < 2147483647) VAL [a=3, b=4, counter=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L38] CALL assume_abort_if_not(yy < 2147483647) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L38] RET assume_abort_if_not(yy < 2147483647) VAL [a=3, b=4, counter=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L40] EXPR counter++ VAL [a=3, b=4, counter=1, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L40] COND TRUE counter++<5 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [a=3, b=4, c=3, counter=1, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L46] EXPR counter++ VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L46] COND TRUE counter++<5 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L51] COND TRUE !(c >= b) VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k [L40] EXPR counter++ VAL [a=4, b=3, counter=3, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L40] COND TRUE counter++<5 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [a=4, b=3, c=4, counter=3, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L46] EXPR counter++ VAL [a=4, b=3, c=4, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L46] COND TRUE counter++<5 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [a=4, b=3, c=4, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [a=4, b=3, c=4, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=4, b=3, c=4, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=4, b=3, c=4, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [a=4, b=3, c=1, counter=4, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L46] EXPR counter++ VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L46] COND TRUE counter++<5 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L51] COND TRUE !(c >= b) VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k [L40] EXPR counter++ VAL [a=3, b=1, counter=6, p=1, q=-1, r=0, s=1, x=3, xy=12, y=4, yy=16] [L40] COND FALSE !(counter++<5) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) VAL [\old(cond)=0, counter=6] [L11] COND TRUE !(cond) VAL [\old(cond)=0, counter=6] [L13] reach_error() VAL [\old(cond)=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.4s, OverallIterations: 18, TraceHistogramMax: 13, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 649 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 581 mSDsluCounter, 3739 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3069 mSDsCounter, 292 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2428 IncrementalHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 292 mSolverCounterUnsat, 670 mSDtfsCounter, 2428 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1436 GetRequests, 1220 SyntacticMatches, 12 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=496occurred in iteration=15, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 17 MinimizatonAttempts, 244 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 25.4s InterpolantComputationTime, 1871 NumberOfCodeBlocks, 1851 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1555 ConstructedInterpolants, 0 QuantifiedInterpolants, 6687 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2081 ConjunctsInSsa, 271 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 1988/2186 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 RESULT: Ultimate proved your program to be incorrect! [2024-10-14 02:19:13,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE