./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/egcd3-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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/egcd3-ll_valuebound1.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 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 21:17:32,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 21:17:33,025 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 21:17:33,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 21:17:33,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 21:17:33,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 21:17:33,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 21:17:33,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 21:17:33,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 21:17:33,050 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 21:17:33,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 21:17:33,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 21:17:33,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 21:17:33,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 21:17:33,051 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 21:17:33,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 21:17:33,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 21:17:33,052 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 21:17:33,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 21:17:33,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 21:17:33,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 21:17:33,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 21:17:33,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 21:17:33,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 21:17:33,054 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 21:17:33,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 21:17:33,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 21:17:33,055 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 21:17:33,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 21:17:33,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 21:17:33,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 21:17:33,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 21:17:33,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 21:17:33,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 21:17:33,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 21:17:33,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 21:17:33,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 21:17:33,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 21:17:33,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 21:17:33,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 21:17:33,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 21:17:33,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 21:17:33,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f [2024-11-19 21:17:33,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 21:17:33,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 21:17:33,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 21:17:33,268 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 21:17:33,269 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 21:17:33,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2024-11-19 21:17:34,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 21:17:34,635 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 21:17:34,635 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2024-11-19 21:17:34,644 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d4430d2/ff17f2620b62465a84ccd661fe441cf6/FLAG2d28d9608 [2024-11-19 21:17:34,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d4430d2/ff17f2620b62465a84ccd661fe441cf6 [2024-11-19 21:17:34,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 21:17:34,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 21:17:34,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 21:17:34,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 21:17:34,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 21:17:34,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eaff269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34, skipping insertion in model container [2024-11-19 21:17:34,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,685 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 21:17:34,820 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2024-11-19 21:17:34,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 21:17:34,842 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 21:17:34,851 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2024-11-19 21:17:34,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 21:17:34,880 INFO L204 MainTranslator]: Completed translation [2024-11-19 21:17:34,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34 WrapperNode [2024-11-19 21:17:34,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 21:17:34,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 21:17:34,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 21:17:34,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 21:17:34,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,899 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,933 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2024-11-19 21:17:34,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 21:17:34,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 21:17:34,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 21:17:34,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 21:17:34,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,954 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 21:17:34,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 21:17:34,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 21:17:34,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 21:17:34,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 21:17:34,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (1/1) ... [2024-11-19 21:17:34,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 21:17:34,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:17:34,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 21:17:34,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 21:17:35,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 21:17:35,022 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 21:17:35,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 21:17:35,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 21:17:35,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 21:17:35,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 21:17:35,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 21:17:35,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 21:17:35,064 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 21:17:35,065 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 21:17:35,159 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-19 21:17:35,159 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 21:17:35,169 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 21:17:35,169 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 21:17:35,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:17:35 BoogieIcfgContainer [2024-11-19 21:17:35,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 21:17:35,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 21:17:35,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 21:17:35,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 21:17:35,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:17:34" (1/3) ... [2024-11-19 21:17:35,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6277a04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:17:35, skipping insertion in model container [2024-11-19 21:17:35,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:17:34" (2/3) ... [2024-11-19 21:17:35,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6277a04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:17:35, skipping insertion in model container [2024-11-19 21:17:35,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:17:35" (3/3) ... [2024-11-19 21:17:35,177 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.c [2024-11-19 21:17:35,189 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 21:17:35,189 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 21:17:35,236 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 21:17:35,240 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;@4a79c04c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 21:17:35,240 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 21:17:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 21:17:35,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 21:17:35,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:35,248 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] [2024-11-19 21:17:35,248 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:35,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2024-11-19 21:17:35,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:35,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266408333] [2024-11-19 21:17:35,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:35,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:17:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:17:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:17:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 21:17:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 21:17:35,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266408333] [2024-11-19 21:17:35,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266408333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:17:35,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:17:35,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 21:17:35,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045761072] [2024-11-19 21:17:35,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:17:35,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 21:17:35,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 21:17:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 21:17:35,429 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-19 21:17:35,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:35,443 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2024-11-19 21:17:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 21:17:35,444 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 29 [2024-11-19 21:17:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:35,451 INFO L225 Difference]: With dead ends: 67 [2024-11-19 21:17:35,451 INFO L226 Difference]: Without dead ends: 31 [2024-11-19 21:17:35,453 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 [2024-11-19 21:17:35,457 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:35,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:17:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-19 21:17:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-19 21:17:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-19 21:17:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-11-19 21:17:35,482 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2024-11-19 21:17:35,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:35,482 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-11-19 21:17:35,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-19 21:17:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-11-19 21:17:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 21:17:35,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:35,484 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] [2024-11-19 21:17:35,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 21:17:35,484 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:35,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2024-11-19 21:17:35,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:35,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481774630] [2024-11-19 21:17:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:35,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:17:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:17:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:17:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 21:17:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 21:17:35,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:35,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481774630] [2024-11-19 21:17:35,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481774630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:17:35,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:17:35,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 21:17:35,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081956968] [2024-11-19 21:17:35,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:17:35,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 21:17:35,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 21:17:35,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:17:35,742 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 21:17:35,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:35,835 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2024-11-19 21:17:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 21:17:35,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-11-19 21:17:35,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:35,836 INFO L225 Difference]: With dead ends: 50 [2024-11-19 21:17:35,836 INFO L226 Difference]: Without dead ends: 43 [2024-11-19 21:17:35,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:17:35,838 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 28 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:35,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 102 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:17:35,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-19 21:17:35,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2024-11-19 21:17:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-19 21:17:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-19 21:17:35,849 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2024-11-19 21:17:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:35,850 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-19 21:17:35,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 21:17:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-19 21:17:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 21:17:35,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:35,851 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, 1, 1] [2024-11-19 21:17:35,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 21:17:35,851 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:35,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2024-11-19 21:17:35,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:35,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191779485] [2024-11-19 21:17:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:35,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:17:35,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456952872] [2024-11-19 21:17:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:35,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:35,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:17:35,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:17:35,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 21:17:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:35,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 21:17:35,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:17:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 21:17:36,058 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 21:17:36,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:36,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191779485] [2024-11-19 21:17:36,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:17:36,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456952872] [2024-11-19 21:17:36,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456952872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:17:36,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:17:36,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 21:17:36,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420436840] [2024-11-19 21:17:36,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:17:36,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:17:36,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:36,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:17:36,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:17:36,061 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2024-11-19 21:17:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:36,103 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-11-19 21:17:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:17:36,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 33 [2024-11-19 21:17:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:36,105 INFO L225 Difference]: With dead ends: 49 [2024-11-19 21:17:36,106 INFO L226 Difference]: Without dead ends: 47 [2024-11-19 21:17:36,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:17:36,107 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:36,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 134 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:17:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-19 21:17:36,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-19 21:17:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 21:17:36,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2024-11-19 21:17:36,116 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2024-11-19 21:17:36,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:36,116 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2024-11-19 21:17:36,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2024-11-19 21:17:36,116 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2024-11-19 21:17:36,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 21:17:36,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:36,117 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, 1] [2024-11-19 21:17:36,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 21:17:36,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:36,318 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:36,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2024-11-19 21:17:36,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:36,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82906819] [2024-11-19 21:17:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:36,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:36,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:17:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:36,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:17:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:36,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:17:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:36,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 21:17:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 21:17:36,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:36,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82906819] [2024-11-19 21:17:36,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82906819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:17:36,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178539235] [2024-11-19 21:17:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:36,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:36,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:17:36,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:17:36,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 21:17:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:36,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 21:17:36,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:17:36,581 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 21:17:36,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:17:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 21:17:36,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178539235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:17:36,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:17:36,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-19 21:17:36,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125295985] [2024-11-19 21:17:36,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:17:36,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 21:17:36,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:36,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 21:17:36,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-19 21:17:36,667 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 21:17:36,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:36,843 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2024-11-19 21:17:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 21:17:36,846 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-11-19 21:17:36,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:36,847 INFO L225 Difference]: With dead ends: 99 [2024-11-19 21:17:36,847 INFO L226 Difference]: Without dead ends: 92 [2024-11-19 21:17:36,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-19 21:17:36,848 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 67 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:36,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 234 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:17:36,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-19 21:17:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2024-11-19 21:17:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 21:17:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2024-11-19 21:17:36,861 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2024-11-19 21:17:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:36,862 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2024-11-19 21:17:36,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 21:17:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2024-11-19 21:17:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 21:17:36,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:36,863 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, 1, 1, 1, 1] [2024-11-19 21:17:36,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 21:17:37,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 21:17:37,064 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:37,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2024-11-19 21:17:37,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:37,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893321705] [2024-11-19 21:17:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:17:37,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703734304] [2024-11-19 21:17:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:37,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:37,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:17:37,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:17:37,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 21:17:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:37,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 21:17:37,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:17:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 21:17:37,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 21:17:37,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:37,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893321705] [2024-11-19 21:17:37,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:17:37,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703734304] [2024-11-19 21:17:37,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703734304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:17:37,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:17:37,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 21:17:37,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089648264] [2024-11-19 21:17:37,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:17:37,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:17:37,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:37,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:17:37,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:17:37,193 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-19 21:17:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:37,229 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-11-19 21:17:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:17:37,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 38 [2024-11-19 21:17:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:37,230 INFO L225 Difference]: With dead ends: 75 [2024-11-19 21:17:37,230 INFO L226 Difference]: Without dead ends: 73 [2024-11-19 21:17:37,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:17:37,231 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:37,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 131 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:17:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-19 21:17:37,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-11-19 21:17:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 21:17:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-11-19 21:17:37,244 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2024-11-19 21:17:37,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:37,244 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-11-19 21:17:37,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-19 21:17:37,244 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-11-19 21:17:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 21:17:37,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:37,245 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 21:17:37,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 21:17:37,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:37,446 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:37,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2024-11-19 21:17:37,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:37,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847341797] [2024-11-19 21:17:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:37,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:37,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:17:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:37,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:17:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:37,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:17:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:37,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 21:17:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 21:17:37,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847341797] [2024-11-19 21:17:37,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847341797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:17:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591922699] [2024-11-19 21:17:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:37,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:37,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:17:37,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:17:37,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 21:17:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:37,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 21:17:37,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:17:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 21:17:37,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:17:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 21:17:37,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591922699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:17:37,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:17:37,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-19 21:17:37,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682917656] [2024-11-19 21:17:37,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:17:37,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 21:17:37,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:37,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 21:17:37,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-19 21:17:37,747 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-19 21:17:37,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:37,894 INFO L93 Difference]: Finished difference Result 98 states and 132 transitions. [2024-11-19 21:17:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 21:17:37,894 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 38 [2024-11-19 21:17:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:37,895 INFO L225 Difference]: With dead ends: 98 [2024-11-19 21:17:37,895 INFO L226 Difference]: Without dead ends: 60 [2024-11-19 21:17:37,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-19 21:17:37,896 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 56 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:37,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 163 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:17:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-19 21:17:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2024-11-19 21:17:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 21:17:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2024-11-19 21:17:37,914 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 38 [2024-11-19 21:17:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:37,914 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2024-11-19 21:17:37,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-19 21:17:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2024-11-19 21:17:37,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 21:17:37,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:37,915 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-11-19 21:17:37,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 21:17:38,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:38,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:38,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2024-11-19 21:17:38,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:38,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390990741] [2024-11-19 21:17:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:38,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:17:38,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122478437] [2024-11-19 21:17:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:38,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:38,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:17:38,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:17:38,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 21:17:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:38,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 21:17:38,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:17:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 21:17:38,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 21:17:38,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:38,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390990741] [2024-11-19 21:17:38,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:17:38,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122478437] [2024-11-19 21:17:38,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122478437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:17:38,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:17:38,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 21:17:38,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933077803] [2024-11-19 21:17:38,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:17:38,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:17:38,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:38,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:17:38,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:17:38,202 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 21:17:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:38,245 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-11-19 21:17:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:17:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2024-11-19 21:17:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:38,246 INFO L225 Difference]: With dead ends: 75 [2024-11-19 21:17:38,246 INFO L226 Difference]: Without dead ends: 73 [2024-11-19 21:17:38,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:17:38,247 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:38,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 130 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:17:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-19 21:17:38,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2024-11-19 21:17:38,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 44 states have internal predecessors, (52), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-19 21:17:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2024-11-19 21:17:38,260 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 43 [2024-11-19 21:17:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:38,260 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2024-11-19 21:17:38,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 21:17:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2024-11-19 21:17:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 21:17:38,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:38,261 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, 1, 1] [2024-11-19 21:17:38,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 21:17:38,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:38,466 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:38,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2024-11-19 21:17:38,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:38,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187414174] [2024-11-19 21:17:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:38,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:17:38,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363681364] [2024-11-19 21:17:38,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:38,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:38,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:17:38,485 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:17:38,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 21:17:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:38,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 21:17:38,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:17:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-19 21:17:38,564 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 21:17:38,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:38,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187414174] [2024-11-19 21:17:38,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:17:38,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363681364] [2024-11-19 21:17:38,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363681364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:17:38,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:17:38,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 21:17:38,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467557844] [2024-11-19 21:17:38,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:17:38,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:17:38,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:38,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:17:38,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:17:38,566 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-19 21:17:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:38,606 INFO L93 Difference]: Finished difference Result 102 states and 144 transitions. [2024-11-19 21:17:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:17:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 48 [2024-11-19 21:17:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:38,608 INFO L225 Difference]: With dead ends: 102 [2024-11-19 21:17:38,608 INFO L226 Difference]: Without dead ends: 100 [2024-11-19 21:17:38,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:17:38,609 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 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 [2024-11-19 21:17:38,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 132 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:17:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-19 21:17:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2024-11-19 21:17:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 50 states have (on average 1.18) internal successors, (59), 55 states have internal predecessors, (59), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 21:17:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions. [2024-11-19 21:17:38,626 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 48 [2024-11-19 21:17:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:38,626 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 132 transitions. [2024-11-19 21:17:38,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-19 21:17:38,626 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions. [2024-11-19 21:17:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-19 21:17:38,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:38,627 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, 1, 1, 1, 1] [2024-11-19 21:17:38,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 21:17:38,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:38,832 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:38,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:38,832 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2024-11-19 21:17:38,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:38,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571430756] [2024-11-19 21:17:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:38,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:17:38,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822523885] [2024-11-19 21:17:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:38,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:38,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:17:38,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:17:38,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 21:17:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:38,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-19 21:17:38,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:17:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-19 21:17:39,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:17:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-19 21:17:39,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571430756] [2024-11-19 21:17:39,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:17:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822523885] [2024-11-19 21:17:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822523885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:17:39,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 21:17:39,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-11-19 21:17:39,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079400261] [2024-11-19 21:17:39,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 21:17:39,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 21:17:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:39,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 21:17:39,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2024-11-19 21:17:39,972 INFO L87 Difference]: Start difference. First operand 94 states and 132 transitions. Second operand has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 9 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-19 21:17:42,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:42,153 INFO L93 Difference]: Finished difference Result 327 states and 506 transitions. [2024-11-19 21:17:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-19 21:17:42,154 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 9 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 60 [2024-11-19 21:17:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:42,158 INFO L225 Difference]: With dead ends: 327 [2024-11-19 21:17:42,158 INFO L226 Difference]: Without dead ends: 323 [2024-11-19 21:17:42,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2024-11-19 21:17:42,159 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 299 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:42,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 482 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 21:17:42,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-19 21:17:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 185. [2024-11-19 21:17:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 111 states have internal predecessors, (131), 69 states have call successors, (69), 9 states have call predecessors, (69), 9 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-19 21:17:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 268 transitions. [2024-11-19 21:17:42,205 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 268 transitions. Word has length 60 [2024-11-19 21:17:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:42,206 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 268 transitions. [2024-11-19 21:17:42,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 9 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-19 21:17:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 268 transitions. [2024-11-19 21:17:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 21:17:42,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:42,207 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1] [2024-11-19 21:17:42,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 21:17:42,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:42,412 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:42,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:42,412 INFO L85 PathProgramCache]: Analyzing trace with hash -492391883, now seen corresponding path program 1 times [2024-11-19 21:17:42,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:42,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977932618] [2024-11-19 21:17:42,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:42,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:17:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:17:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:17:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 21:17:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-19 21:17:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-19 21:17:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-19 21:17:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 21:17:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 21:17:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-19 21:17:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 21:17:42,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:42,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977932618] [2024-11-19 21:17:42,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977932618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:17:42,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:17:42,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 21:17:42,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558024545] [2024-11-19 21:17:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:17:42,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:17:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:42,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:17:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:17:42,488 INFO L87 Difference]: Start difference. First operand 185 states and 268 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-19 21:17:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:42,551 INFO L93 Difference]: Finished difference Result 306 states and 440 transitions. [2024-11-19 21:17:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:17:42,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 68 [2024-11-19 21:17:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:42,553 INFO L225 Difference]: With dead ends: 306 [2024-11-19 21:17:42,553 INFO L226 Difference]: Without dead ends: 182 [2024-11-19 21:17:42,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:17:42,554 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:42,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 120 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:17:42,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-19 21:17:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2024-11-19 21:17:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 110 states have internal predecessors, (133), 61 states have call successors, (61), 8 states have call predecessors, (61), 8 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-19 21:17:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 254 transitions. [2024-11-19 21:17:42,587 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 254 transitions. Word has length 68 [2024-11-19 21:17:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:42,588 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 254 transitions. [2024-11-19 21:17:42,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-19 21:17:42,588 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 254 transitions. [2024-11-19 21:17:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 21:17:42,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:42,589 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:17:42,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 21:17:42,589 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:42,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:42,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1382204855, now seen corresponding path program 1 times [2024-11-19 21:17:42,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:42,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895459796] [2024-11-19 21:17:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:42,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:17:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:17:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:17:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 21:17:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-19 21:17:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-19 21:17:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-19 21:17:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 21:17:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-19 21:17:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 21:17:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:42,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895459796] [2024-11-19 21:17:42,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895459796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:17:42,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814782140] [2024-11-19 21:17:42,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:42,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:42,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:17:42,777 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:17:42,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 21:17:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:42,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 21:17:42,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:17:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-19 21:17:42,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:17:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 21:17:42,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814782140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:17:42,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:17:42,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2024-11-19 21:17:42,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735947293] [2024-11-19 21:17:42,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:17:42,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 21:17:42,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 21:17:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-19 21:17:43,000 INFO L87 Difference]: Start difference. First operand 179 states and 254 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-19 21:17:43,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:43,177 INFO L93 Difference]: Finished difference Result 255 states and 358 transitions. [2024-11-19 21:17:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 21:17:43,177 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 68 [2024-11-19 21:17:43,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:43,178 INFO L225 Difference]: With dead ends: 255 [2024-11-19 21:17:43,178 INFO L226 Difference]: Without dead ends: 140 [2024-11-19 21:17:43,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-19 21:17:43,179 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:43,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 241 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:17:43,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-19 21:17:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-19 21:17:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 88 states have internal predecessors, (104), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-19 21:17:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2024-11-19 21:17:43,206 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 68 [2024-11-19 21:17:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:43,206 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2024-11-19 21:17:43,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-19 21:17:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2024-11-19 21:17:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-19 21:17:43,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:17:43,207 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 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, 1] [2024-11-19 21:17:43,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 21:17:43,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 21:17:43,412 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:17:43,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:17:43,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1607561902, now seen corresponding path program 1 times [2024-11-19 21:17:43,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:17:43,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777406063] [2024-11-19 21:17:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:43,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:17:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:17:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:17:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:17:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 21:17:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-19 21:17:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-19 21:17:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-19 21:17:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 21:17:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 21:17:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-19 21:17:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-19 21:17:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-19 21:17:43,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:17:43,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777406063] [2024-11-19 21:17:43,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777406063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:17:43,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231897410] [2024-11-19 21:17:43,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:17:43,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:43,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:17:43,563 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:17:43,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 21:17:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:17:43,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 21:17:43,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:17:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-19 21:17:43,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:17:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-19 21:17:43,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231897410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:17:43,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:17:43,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-19 21:17:43,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965545681] [2024-11-19 21:17:43,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:17:43,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 21:17:43,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:17:43,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 21:17:43,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-19 21:17:43,807 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-19 21:17:43,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:17:43,898 INFO L93 Difference]: Finished difference Result 156 states and 205 transitions. [2024-11-19 21:17:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 21:17:43,900 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) Word has length 70 [2024-11-19 21:17:43,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:17:43,901 INFO L225 Difference]: With dead ends: 156 [2024-11-19 21:17:43,901 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 21:17:43,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-11-19 21:17:43,902 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:17:43,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 176 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:17:43,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 21:17:43,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 21:17:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:17:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 21:17:43,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2024-11-19 21:17:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:17:43,903 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 21:17:43,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-19 21:17:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 21:17:43,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 21:17:43,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-19 21:17:43,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 21:17:44,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:17:44,109 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:17:44,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-19 21:17:44,493 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 21:17:44,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:17:44 BoogieIcfgContainer [2024-11-19 21:17:44,519 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 21:17:44,519 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 21:17:44,520 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 21:17:44,520 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 21:17:44,520 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:17:35" (3/4) ... [2024-11-19 21:17:44,522 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 21:17:44,525 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-19 21:17:44,525 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-19 21:17:44,528 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-19 21:17:44,528 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-19 21:17:44,528 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 21:17:44,528 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 21:17:44,599 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 21:17:44,600 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 21:17:44,600 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 21:17:44,600 INFO L158 Benchmark]: Toolchain (without parser) took 9940.27ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 104.1MB in the beginning and 210.6MB in the end (delta: -106.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 21:17:44,601 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 113.2MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 21:17:44,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.93ms. Allocated memory is still 172.0MB. Free memory was 103.9MB in the beginning and 143.2MB in the end (delta: -39.3MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2024-11-19 21:17:44,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.86ms. Allocated memory is still 172.0MB. Free memory was 143.2MB in the beginning and 141.6MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 21:17:44,601 INFO L158 Benchmark]: Boogie Preprocessor took 27.87ms. Allocated memory is still 172.0MB. Free memory was 141.6MB in the beginning and 140.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 21:17:44,601 INFO L158 Benchmark]: RCFGBuilder took 207.20ms. Allocated memory is still 172.0MB. Free memory was 140.1MB in the beginning and 127.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 21:17:44,602 INFO L158 Benchmark]: TraceAbstraction took 9348.37ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 127.0MB in the beginning and 215.8MB in the end (delta: -88.8MB). Peak memory consumption was 133.3MB. Max. memory is 16.1GB. [2024-11-19 21:17:44,602 INFO L158 Benchmark]: Witness Printer took 80.72ms. Allocated memory is still 249.6MB. Free memory was 215.8MB in the beginning and 210.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-19 21:17:44,603 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 113.2MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.93ms. Allocated memory is still 172.0MB. Free memory was 103.9MB in the beginning and 143.2MB in the end (delta: -39.3MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.86ms. Allocated memory is still 172.0MB. Free memory was 143.2MB in the beginning and 141.6MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.87ms. Allocated memory is still 172.0MB. Free memory was 141.6MB in the beginning and 140.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 207.20ms. Allocated memory is still 172.0MB. Free memory was 140.1MB in the beginning and 127.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9348.37ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 127.0MB in the beginning and 215.8MB in the end (delta: -88.8MB). Peak memory consumption was 133.3MB. Max. memory is 16.1GB. * Witness Printer took 80.72ms. Allocated memory is still 249.6MB. Free memory was 215.8MB in the beginning and 210.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.9s, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 573 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 539 mSDsluCounter, 2089 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1676 mSDsCounter, 326 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1316 IncrementalHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 326 mSolverCounterUnsat, 413 mSDtfsCounter, 1316 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 885 GetRequests, 728 SyntacticMatches, 12 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=9, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 196 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 993 NumberOfCodeBlocks, 993 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1021 ConstructedInterpolants, 0 QuantifiedInterpolants, 3306 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1143 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 1097/1192 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((c == 0) && (k == 1)) && (b == 1)) && (p == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1)) || ((((((((((b == 1) && (p == 1)) && (c == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (s == 1))) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((((d == 1) && (p == 1)) && (c <= 1)) && (v == 1)) && (b == v)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (b <= c)) && (a == x)) && (s == 1)) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((p == 0) && (a <= 1)) && (b == 0)) && (q == 1)) && (y == 1)) && (1 <= x)) && (r == 1)) && (((long long) x + 1) <= ((__int128) 2 * a))) && (((__int128) s + 1) == 0)) || ((((((((b == 1) && (p == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-19 21:17:44,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE