./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum4.i --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/array-crafted/mapsum4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d00a4e4676c9051eb624340f361fec0d607bdb13ab2955b117561fab63156730 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 16:52:05,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 16:52:05,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 16:52:05,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 16:52:05,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 16:52:05,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 16:52:05,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 16:52:05,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 16:52:05,140 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 16:52:05,140 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 16:52:05,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 16:52:05,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 16:52:05,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 16:52:05,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 16:52:05,141 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 16:52:05,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 16:52:05,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 16:52:05,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 16:52:05,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 16:52:05,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 16:52:05,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 16:52:05,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 16:52:05,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 16:52:05,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 16:52:05,146 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 16:52:05,146 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 16:52:05,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 16:52:05,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 16:52:05,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 16:52:05,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 16:52:05,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 16:52:05,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 16:52:05,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:52:05,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 16:52:05,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 16:52:05,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 16:52:05,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 16:52:05,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 16:52:05,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 16:52:05,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 16:52:05,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 16:52:05,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 16:52:05,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d00a4e4676c9051eb624340f361fec0d607bdb13ab2955b117561fab63156730 [2024-11-19 16:52:05,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 16:52:05,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 16:52:05,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 16:52:05,419 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 16:52:05,419 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 16:52:05,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum4.i [2024-11-19 16:52:06,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 16:52:06,913 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 16:52:06,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum4.i [2024-11-19 16:52:06,919 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e85c481a/93bdcd1f970d40aabb566b847dfeac9f/FLAG9e43c9281 [2024-11-19 16:52:06,931 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e85c481a/93bdcd1f970d40aabb566b847dfeac9f [2024-11-19 16:52:06,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 16:52:06,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 16:52:06,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 16:52:06,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 16:52:06,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 16:52:06,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:52:06" (1/1) ... [2024-11-19 16:52:06,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee744a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:06, skipping insertion in model container [2024-11-19 16:52:06,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:52:06" (1/1) ... [2024-11-19 16:52:06,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 16:52:07,118 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/array-crafted/mapsum4.i[1318,1331] [2024-11-19 16:52:07,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:52:07,127 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 16:52:07,144 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/array-crafted/mapsum4.i[1318,1331] [2024-11-19 16:52:07,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:52:07,157 INFO L204 MainTranslator]: Completed translation [2024-11-19 16:52:07,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07 WrapperNode [2024-11-19 16:52:07,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 16:52:07,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 16:52:07,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 16:52:07,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 16:52:07,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,185 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-11-19 16:52:07,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 16:52:07,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 16:52:07,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 16:52:07,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 16:52:07,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,196 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,208 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-19 16:52:07,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,209 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 16:52:07,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 16:52:07,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 16:52:07,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 16:52:07,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (1/1) ... [2024-11-19 16:52:07,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:52:07,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:07,262 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 16:52:07,264 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 16:52:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 16:52:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2024-11-19 16:52:07,303 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2024-11-19 16:52:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 16:52:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 16:52:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 16:52:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 16:52:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 16:52:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 16:52:07,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 16:52:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 16:52:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 16:52:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 16:52:07,353 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 16:52:07,354 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 16:52:07,509 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-19 16:52:07,509 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 16:52:07,521 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 16:52:07,523 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 16:52:07,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:52:07 BoogieIcfgContainer [2024-11-19 16:52:07,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 16:52:07,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 16:52:07,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 16:52:07,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 16:52:07,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:52:06" (1/3) ... [2024-11-19 16:52:07,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cd7d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:52:07, skipping insertion in model container [2024-11-19 16:52:07,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:07" (2/3) ... [2024-11-19 16:52:07,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cd7d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:52:07, skipping insertion in model container [2024-11-19 16:52:07,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:52:07" (3/3) ... [2024-11-19 16:52:07,533 INFO L112 eAbstractionObserver]: Analyzing ICFG mapsum4.i [2024-11-19 16:52:07,547 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 16:52:07,547 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 16:52:07,604 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 16:52:07,611 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;@3af0295f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 16:52:07,611 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 16:52:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:07,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 16:52:07,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:07,622 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:07,623 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:07,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash -864475220, now seen corresponding path program 1 times [2024-11-19 16:52:07,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:07,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991660214] [2024-11-19 16:52:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:07,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:07,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 16:52:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:07,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 16:52:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:07,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 16:52:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 16:52:07,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:07,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991660214] [2024-11-19 16:52:07,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991660214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:07,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130190517] [2024-11-19 16:52:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:07,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:07,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:07,953 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 16:52:07,954 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 16:52:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 16:52:08,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 16:52:08,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 16:52:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130190517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:52:08,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 16:52:08,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-19 16:52:08,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918321282] [2024-11-19 16:52:08,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:52:08,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 16:52:08,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:08,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 16:52:08,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 16:52:08,074 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 16:52:08,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:08,087 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2024-11-19 16:52:08,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 16:52:08,090 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-11-19 16:52:08,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:08,104 INFO L225 Difference]: With dead ends: 50 [2024-11-19 16:52:08,104 INFO L226 Difference]: Without dead ends: 23 [2024-11-19 16:52:08,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 16:52:08,118 INFO L432 NwaCegarLoop]: 31 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, 31 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 16:52:08,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:52:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-19 16:52:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-19 16:52:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-19 16:52:08,185 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2024-11-19 16:52:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:08,187 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-19 16:52:08,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 16:52:08,187 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-19 16:52:08,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 16:52:08,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:08,188 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:08,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 16:52:08,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 16:52:08,389 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:08,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:08,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1327298342, now seen corresponding path program 1 times [2024-11-19 16:52:08,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:08,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142347412] [2024-11-19 16:52:08,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:08,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 16:52:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 16:52:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 16:52:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 16:52:08,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:08,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142347412] [2024-11-19 16:52:08,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142347412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:08,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520613574] [2024-11-19 16:52:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:08,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:08,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:08,536 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 16:52:08,538 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 16:52:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 16:52:08,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 16:52:08,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 16:52:08,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520613574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:52:08,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 16:52:08,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-19 16:52:08,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538315844] [2024-11-19 16:52:08,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:52:08,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:52:08,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:08,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:52:08,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 16:52:08,609 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 16:52:08,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:08,619 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-11-19 16:52:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:52:08,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-19 16:52:08,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:08,620 INFO L225 Difference]: With dead ends: 44 [2024-11-19 16:52:08,621 INFO L226 Difference]: Without dead ends: 25 [2024-11-19 16:52:08,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 16:52:08,622 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:08,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:52:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-19 16:52:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-19 16:52:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-19 16:52:08,626 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2024-11-19 16:52:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:08,626 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-19 16:52:08,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 16:52:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-19 16:52:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 16:52:08,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:08,627 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:08,636 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 16:52:08,828 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,SelfDestructingSolverStorable1 [2024-11-19 16:52:08,829 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:08,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash 916084580, now seen corresponding path program 1 times [2024-11-19 16:52:08,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:08,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135408522] [2024-11-19 16:52:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:08,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-19 16:52:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 16:52:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-19 16:52:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 16:52:08,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:08,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135408522] [2024-11-19 16:52:08,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135408522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:08,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814031122] [2024-11-19 16:52:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:08,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:08,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:08,926 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 16:52:08,927 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 16:52:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:08,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 16:52:08,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:52:08,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 16:52:08,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814031122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:52:08,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 16:52:08,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-19 16:52:08,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274546243] [2024-11-19 16:52:08,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:52:08,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:52:08,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:52:08,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 16:52:08,992 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 16:52:09,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:09,004 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-11-19 16:52:09,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:52:09,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-19 16:52:09,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:09,006 INFO L225 Difference]: With dead ends: 43 [2024-11-19 16:52:09,006 INFO L226 Difference]: Without dead ends: 26 [2024-11-19 16:52:09,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 16:52:09,007 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:09,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:52:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-19 16:52:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-19 16:52:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-19 16:52:09,011 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 31 [2024-11-19 16:52:09,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:09,011 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-19 16:52:09,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 16:52:09,012 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-19 16:52:09,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 16:52:09,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:09,013 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:09,021 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 16:52:09,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:09,213 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:09,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:09,214 INFO L85 PathProgramCache]: Analyzing trace with hash -456025118, now seen corresponding path program 1 times [2024-11-19 16:52:09,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:09,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950283577] [2024-11-19 16:52:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:09,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:09,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-19 16:52:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:09,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 16:52:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:09,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-19 16:52:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 16:52:09,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:09,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950283577] [2024-11-19 16:52:09,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950283577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:09,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016989889] [2024-11-19 16:52:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:09,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:09,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:09,341 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 16:52:09,342 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 16:52:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:09,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 16:52:09,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 16:52:09,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 16:52:09,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016989889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:52:09,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 16:52:09,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-19 16:52:09,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177763896] [2024-11-19 16:52:09,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:52:09,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:52:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:52:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 16:52:09,410 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 16:52:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:09,426 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-19 16:52:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:52:09,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-11-19 16:52:09,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:09,428 INFO L225 Difference]: With dead ends: 40 [2024-11-19 16:52:09,428 INFO L226 Difference]: Without dead ends: 27 [2024-11-19 16:52:09,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 16:52:09,429 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:09,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:52:09,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-19 16:52:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-19 16:52:09,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-19 16:52:09,439 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 37 [2024-11-19 16:52:09,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:09,439 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-19 16:52:09,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 16:52:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-19 16:52:09,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 16:52:09,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:09,442 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:09,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 16:52:09,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:09,644 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:09,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1225475744, now seen corresponding path program 1 times [2024-11-19 16:52:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245675420] [2024-11-19 16:52:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:09,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:09,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-19 16:52:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:09,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 16:52:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:09,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-19 16:52:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 16:52:09,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:09,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245675420] [2024-11-19 16:52:09,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245675420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:09,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816392797] [2024-11-19 16:52:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:09,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:09,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:09,735 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 16:52:09,737 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 16:52:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:09,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 16:52:09,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-19 16:52:09,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:52:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-19 16:52:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816392797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:52:09,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:52:09,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-19 16:52:09,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546674145] [2024-11-19 16:52:09,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:52:09,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 16:52:09,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:09,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 16:52:09,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 16:52:09,850 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-19 16:52:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:09,901 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2024-11-19 16:52:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 16:52:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-11-19 16:52:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:09,902 INFO L225 Difference]: With dead ends: 56 [2024-11-19 16:52:09,902 INFO L226 Difference]: Without dead ends: 35 [2024-11-19 16:52:09,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 16:52:09,903 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:09,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:52:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-19 16:52:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-19 16:52:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-19 16:52:09,909 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 39 [2024-11-19 16:52:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:09,909 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-19 16:52:09,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-19 16:52:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-19 16:52:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 16:52:09,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:09,910 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:09,917 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 16:52:10,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:10,113 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:10,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1635191272, now seen corresponding path program 2 times [2024-11-19 16:52:10,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415406001] [2024-11-19 16:52:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:10,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 16:52:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:10,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 16:52:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:10,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 16:52:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-19 16:52:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:10,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415406001] [2024-11-19 16:52:10,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415406001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:10,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805322526] [2024-11-19 16:52:10,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:52:10,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:10,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:10,239 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 16:52:10,245 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 16:52:10,310 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:52:10,310 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:52:10,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 16:52:10,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-19 16:52:10,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:52:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-19 16:52:10,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805322526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:52:10,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:52:10,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-19 16:52:10,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108248404] [2024-11-19 16:52:10,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:52:10,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 16:52:10,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:10,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 16:52:10,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-19 16:52:10,471 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 16:52:10,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:10,535 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2024-11-19 16:52:10,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 16:52:10,536 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2024-11-19 16:52:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:10,537 INFO L225 Difference]: With dead ends: 72 [2024-11-19 16:52:10,537 INFO L226 Difference]: Without dead ends: 49 [2024-11-19 16:52:10,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-19 16:52:10,538 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:10,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:52:10,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-19 16:52:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-19 16:52:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-19 16:52:10,546 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 51 [2024-11-19 16:52:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:10,546 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-19 16:52:10,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 16:52:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-19 16:52:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 16:52:10,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:10,547 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:10,562 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 16:52:10,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:10,748 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:10,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:10,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1202441462, now seen corresponding path program 3 times [2024-11-19 16:52:10,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:10,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754937351] [2024-11-19 16:52:10,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:10,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:10,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 16:52:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:10,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-19 16:52:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:10,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-19 16:52:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:10,968 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 16:52:10,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:10,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754937351] [2024-11-19 16:52:10,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754937351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:10,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026217137] [2024-11-19 16:52:10,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:52:10,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:10,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:10,973 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 16:52:10,974 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 16:52:11,030 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 16:52:11,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:52:11,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 16:52:11,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-19 16:52:11,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:52:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-19 16:52:11,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026217137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:52:11,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:52:11,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-11-19 16:52:11,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012026230] [2024-11-19 16:52:11,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:52:11,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 16:52:11,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:11,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 16:52:11,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-19 16:52:11,109 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:11,160 INFO L93 Difference]: Finished difference Result 84 states and 99 transitions. [2024-11-19 16:52:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 16:52:11,160 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2024-11-19 16:52:11,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:11,161 INFO L225 Difference]: With dead ends: 84 [2024-11-19 16:52:11,161 INFO L226 Difference]: Without dead ends: 59 [2024-11-19 16:52:11,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-19 16:52:11,162 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:11,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 105 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:52:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-19 16:52:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-11-19 16:52:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2024-11-19 16:52:11,173 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 65 [2024-11-19 16:52:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:11,173 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2024-11-19 16:52:11,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:11,174 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2024-11-19 16:52:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-19 16:52:11,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:11,174 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 11, 11, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:11,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 16:52:11,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:11,377 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:11,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash 830300992, now seen corresponding path program 4 times [2024-11-19 16:52:11,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:11,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867261272] [2024-11-19 16:52:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:11,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:11,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-19 16:52:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:11,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-19 16:52:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:11,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-19 16:52:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-19 16:52:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:11,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867261272] [2024-11-19 16:52:11,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867261272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:11,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78430104] [2024-11-19 16:52:11,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 16:52:11,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:11,738 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 16:52:11,739 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 16:52:11,824 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 16:52:11,824 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:52:11,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 16:52:11,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 178 proven. 4 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-19 16:52:11,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:52:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-19 16:52:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78430104] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:52:11,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:52:11,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2024-11-19 16:52:11,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308187896] [2024-11-19 16:52:11,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:52:11,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 16:52:11,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:11,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 16:52:11,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-19 16:52:11,918 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:11,972 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2024-11-19 16:52:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 16:52:11,973 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 91 [2024-11-19 16:52:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:11,973 INFO L225 Difference]: With dead ends: 102 [2024-11-19 16:52:11,974 INFO L226 Difference]: Without dead ends: 69 [2024-11-19 16:52:11,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-19 16:52:11,974 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:11,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 82 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:52:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-19 16:52:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-11-19 16:52:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:11,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2024-11-19 16:52:11,979 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 91 [2024-11-19 16:52:11,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:11,980 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2024-11-19 16:52:11,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:11,980 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2024-11-19 16:52:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-19 16:52:11,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:11,981 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 12, 12, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:11,993 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 16:52:12,185 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,SelfDestructingSolverStorable7 [2024-11-19 16:52:12,186 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:12,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:12,187 INFO L85 PathProgramCache]: Analyzing trace with hash -74795018, now seen corresponding path program 5 times [2024-11-19 16:52:12,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:12,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964257800] [2024-11-19 16:52:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:12,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:12,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-19 16:52:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:12,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-19 16:52:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:12,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-19 16:52:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-19 16:52:12,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:12,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964257800] [2024-11-19 16:52:12,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964257800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:12,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866809755] [2024-11-19 16:52:12,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 16:52:12,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:12,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:12,503 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 16:52:12,504 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 16:52:13,282 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-19 16:52:13,282 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:52:13,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 16:52:13,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-11-19 16:52:13,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:52:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-19 16:52:13,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866809755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:52:13,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:52:13,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 29 [2024-11-19 16:52:13,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085287955] [2024-11-19 16:52:13,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:52:13,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 16:52:13,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:13,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 16:52:13,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2024-11-19 16:52:13,498 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 29 states have internal predecessors, (82), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:13,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:13,577 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2024-11-19 16:52:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 16:52:13,577 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 29 states have internal predecessors, (82), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 101 [2024-11-19 16:52:13,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:13,578 INFO L225 Difference]: With dead ends: 128 [2024-11-19 16:52:13,578 INFO L226 Difference]: Without dead ends: 87 [2024-11-19 16:52:13,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2024-11-19 16:52:13,579 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:13,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 146 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:52:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-19 16:52:13,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-11-19 16:52:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2024-11-19 16:52:13,589 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 101 [2024-11-19 16:52:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:13,589 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2024-11-19 16:52:13,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 29 states have internal predecessors, (82), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:13,590 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2024-11-19 16:52:13,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-19 16:52:13,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:13,591 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 13, 13, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:13,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 16:52:13,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:13,792 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:13,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:13,793 INFO L85 PathProgramCache]: Analyzing trace with hash -55334876, now seen corresponding path program 6 times [2024-11-19 16:52:13,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:13,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902803318] [2024-11-19 16:52:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:13,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:14,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 16:52:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:14,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 16:52:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:14,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-19 16:52:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2024-11-19 16:52:14,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:14,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902803318] [2024-11-19 16:52:14,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902803318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:14,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655066500] [2024-11-19 16:52:14,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 16:52:14,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:14,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:14,248 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:52:14,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 16:52:14,465 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-19 16:52:14,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:52:14,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 16:52:14,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2024-11-19 16:52:14,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:52:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2024-11-19 16:52:14,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655066500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:52:14,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:52:14,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 30 [2024-11-19 16:52:14,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542420978] [2024-11-19 16:52:14,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:52:14,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 16:52:14,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:14,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 16:52:14,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2024-11-19 16:52:14,674 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:14,741 INFO L93 Difference]: Finished difference Result 162 states and 178 transitions. [2024-11-19 16:52:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 16:52:14,741 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 151 [2024-11-19 16:52:14,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:14,742 INFO L225 Difference]: With dead ends: 162 [2024-11-19 16:52:14,742 INFO L226 Difference]: Without dead ends: 105 [2024-11-19 16:52:14,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2024-11-19 16:52:14,743 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:14,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 82 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:52:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-19 16:52:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2024-11-19 16:52:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2024-11-19 16:52:14,769 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 151 [2024-11-19 16:52:14,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:14,769 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2024-11-19 16:52:14,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:14,769 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2024-11-19 16:52:14,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-19 16:52:14,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:14,773 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:14,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 16:52:14,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 16:52:14,975 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:14,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:14,975 INFO L85 PathProgramCache]: Analyzing trace with hash -585185070, now seen corresponding path program 7 times [2024-11-19 16:52:14,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:14,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871787736] [2024-11-19 16:52:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:14,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:15,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-19 16:52:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:15,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 16:52:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:15,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-11-19 16:52:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-19 16:52:15,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:15,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871787736] [2024-11-19 16:52:15,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871787736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:15,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781298873] [2024-11-19 16:52:15,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 16:52:15,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:15,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:15,468 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:52:15,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 16:52:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:15,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 16:52:15,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-19 16:52:15,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:52:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-19 16:52:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781298873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:52:16,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:52:16,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-19 16:52:16,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848842650] [2024-11-19 16:52:16,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:52:16,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 16:52:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:16,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 16:52:16,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 16:52:16,159 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 33 states, 33 states have (on average 2.606060606060606) internal successors, (86), 33 states have internal predecessors, (86), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-19 16:52:16,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:16,261 INFO L93 Difference]: Finished difference Result 209 states and 232 transitions. [2024-11-19 16:52:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-19 16:52:16,267 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.606060606060606) internal successors, (86), 33 states have internal predecessors, (86), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 169 [2024-11-19 16:52:16,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:16,268 INFO L225 Difference]: With dead ends: 209 [2024-11-19 16:52:16,268 INFO L226 Difference]: Without dead ends: 136 [2024-11-19 16:52:16,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 16:52:16,269 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:16,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:52:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-19 16:52:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-19 16:52:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 131 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2024-11-19 16:52:16,281 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 169 [2024-11-19 16:52:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:16,281 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2024-11-19 16:52:16,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.606060606060606) internal successors, (86), 33 states have internal predecessors, (86), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-19 16:52:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2024-11-19 16:52:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-19 16:52:16,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:16,284 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 30, 30, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:16,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 16:52:16,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 16:52:16,489 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:16,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2138896562, now seen corresponding path program 8 times [2024-11-19 16:52:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:16,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564353172] [2024-11-19 16:52:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:16,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:17,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-19 16:52:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:17,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-19 16:52:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:17,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-19 16:52:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2959 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-19 16:52:17,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:17,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564353172] [2024-11-19 16:52:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564353172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:17,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538312915] [2024-11-19 16:52:17,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:52:17,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:17,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:17,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:52:17,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 16:52:17,521 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:52:17,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:52:17,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 16:52:17,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2959 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-19 16:52:17,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:52:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2959 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-19 16:52:18,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538312915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:52:18,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:52:18,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2024-11-19 16:52:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843857095] [2024-11-19 16:52:18,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:52:18,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-19 16:52:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-19 16:52:18,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-19 16:52:18,760 INFO L87 Difference]: Start difference. First operand 136 states and 140 transitions. Second operand has 65 states, 65 states have (on average 2.3076923076923075) internal successors, (150), 65 states have internal predecessors, (150), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-19 16:52:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:18,924 INFO L93 Difference]: Finished difference Result 273 states and 312 transitions. [2024-11-19 16:52:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-19 16:52:18,924 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.3076923076923075) internal successors, (150), 65 states have internal predecessors, (150), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 201 [2024-11-19 16:52:18,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:18,926 INFO L225 Difference]: With dead ends: 273 [2024-11-19 16:52:18,926 INFO L226 Difference]: Without dead ends: 200 [2024-11-19 16:52:18,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-19 16:52:18,927 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:18,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 157 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:52:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-19 16:52:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-11-19 16:52:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.0153846153846153) internal successors, (198), 195 states have internal predecessors, (198), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 204 transitions. [2024-11-19 16:52:18,935 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 204 transitions. Word has length 201 [2024-11-19 16:52:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:18,936 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 204 transitions. [2024-11-19 16:52:18,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.3076923076923075) internal successors, (150), 65 states have internal predecessors, (150), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-19 16:52:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 204 transitions. [2024-11-19 16:52:18,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-19 16:52:18,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:18,938 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:18,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 16:52:19,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 16:52:19,142 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:19,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:19,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1022175118, now seen corresponding path program 9 times [2024-11-19 16:52:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:19,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043993624] [2024-11-19 16:52:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:19,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:21,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-19 16:52:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:21,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-19 16:52:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:21,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-11-19 16:52:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5903 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-19 16:52:21,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043993624] [2024-11-19 16:52:21,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043993624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261980116] [2024-11-19 16:52:21,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:52:21,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:21,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:21,880 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:52:21,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 16:52:22,563 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-19 16:52:22,563 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:52:22,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 16:52:22,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5903 backedges. 848 proven. 196 refuted. 0 times theorem prover too weak. 4859 trivial. 0 not checked. [2024-11-19 16:52:23,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:52:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5903 backedges. 848 proven. 196 refuted. 0 times theorem prover too weak. 4859 trivial. 0 not checked. [2024-11-19 16:52:23,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261980116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:52:23,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:52:23,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 17, 17] total 95 [2024-11-19 16:52:23,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819498495] [2024-11-19 16:52:23,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:52:23,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-19 16:52:23,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:23,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-19 16:52:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2575, Invalid=6355, Unknown=0, NotChecked=0, Total=8930 [2024-11-19 16:52:23,628 INFO L87 Difference]: Start difference. First operand 200 states and 204 transitions. Second operand has 95 states, 95 states have (on average 2.2736842105263158) internal successors, (216), 95 states have internal predecessors, (216), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:23,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:23,839 INFO L93 Difference]: Finished difference Result 308 states and 335 transitions. [2024-11-19 16:52:23,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-19 16:52:23,840 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.2736842105263158) internal successors, (216), 95 states have internal predecessors, (216), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 265 [2024-11-19 16:52:23,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:23,841 INFO L225 Difference]: With dead ends: 308 [2024-11-19 16:52:23,842 INFO L226 Difference]: Without dead ends: 235 [2024-11-19 16:52:23,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1860 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2575, Invalid=6355, Unknown=0, NotChecked=0, Total=8930 [2024-11-19 16:52:23,844 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:23,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 312 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 16:52:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-19 16:52:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2024-11-19 16:52:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.0131004366812226) internal successors, (232), 229 states have internal predecessors, (232), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:23,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 238 transitions. [2024-11-19 16:52:23,853 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 238 transitions. Word has length 265 [2024-11-19 16:52:23,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:23,853 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 238 transitions. [2024-11-19 16:52:23,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.2736842105263158) internal successors, (216), 95 states have internal predecessors, (216), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:23,853 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 238 transitions. [2024-11-19 16:52:23,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2024-11-19 16:52:23,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:23,856 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 63, 63, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:23,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 16:52:24,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 16:52:24,057 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:24,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:24,058 INFO L85 PathProgramCache]: Analyzing trace with hash -478490736, now seen corresponding path program 10 times [2024-11-19 16:52:24,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:24,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243641306] [2024-11-19 16:52:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:24,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:26,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-19 16:52:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:26,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-11-19 16:52:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:26,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-11-19 16:52:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12460 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 8491 trivial. 0 not checked. [2024-11-19 16:52:26,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:26,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243641306] [2024-11-19 16:52:26,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243641306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:26,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431127349] [2024-11-19 16:52:26,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 16:52:26,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:26,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:26,785 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:52:26,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 16:52:27,069 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 16:52:27,069 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:52:27,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 16:52:27,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:52:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12460 backedges. 5591 proven. 900 refuted. 0 times theorem prover too weak. 5969 trivial. 0 not checked. [2024-11-19 16:52:27,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:52:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12460 backedges. 1864 proven. 2764 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2024-11-19 16:52:29,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431127349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:52:29,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:52:29,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 33, 33] total 128 [2024-11-19 16:52:29,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452191039] [2024-11-19 16:52:29,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:52:29,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-19 16:52:29,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:52:29,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-19 16:52:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2024-11-19 16:52:29,361 INFO L87 Difference]: Start difference. First operand 234 states and 238 transitions. Second operand has 128 states, 128 states have (on average 2.1953125) internal successors, (281), 128 states have internal predecessors, (281), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:52:29,748 INFO L93 Difference]: Finished difference Result 406 states and 449 transitions. [2024-11-19 16:52:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-19 16:52:29,748 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.1953125) internal successors, (281), 128 states have internal predecessors, (281), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 363 [2024-11-19 16:52:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:52:29,749 INFO L225 Difference]: With dead ends: 406 [2024-11-19 16:52:29,750 INFO L226 Difference]: Without dead ends: 301 [2024-11-19 16:52:29,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3906 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2024-11-19 16:52:29,753 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 16:52:29,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 249 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 16:52:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-19 16:52:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2024-11-19 16:52:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 295 states have (on average 1.0101694915254238) internal successors, (298), 295 states have internal predecessors, (298), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:52:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 304 transitions. [2024-11-19 16:52:29,761 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 304 transitions. Word has length 363 [2024-11-19 16:52:29,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:52:29,762 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 304 transitions. [2024-11-19 16:52:29,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.1953125) internal successors, (281), 128 states have internal predecessors, (281), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 16:52:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 304 transitions. [2024-11-19 16:52:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2024-11-19 16:52:29,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:52:29,768 INFO L215 NwaCegarLoop]: trace histogram [186, 186, 64, 64, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:52:29,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 16:52:29,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:29,972 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:52:29,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:52:29,972 INFO L85 PathProgramCache]: Analyzing trace with hash -736787698, now seen corresponding path program 11 times [2024-11-19 16:52:29,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:52:29,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188677867] [2024-11-19 16:52:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:52:29,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:52:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:32,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-11-19 16:52:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:32,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-11-19 16:52:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:32,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2024-11-19 16:52:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:52:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 39275 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 35179 trivial. 0 not checked. [2024-11-19 16:52:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:52:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188677867] [2024-11-19 16:52:32,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188677867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:52:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734431041] [2024-11-19 16:52:32,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 16:52:32,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:52:32,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:52:32,869 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:52:32,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process