./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-programs/partial_mod_count_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d56d00b0e11a2318dd34043554d32ecd228c75c86ba1d3fcabadd2cc271a05aa --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 16:48:50,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 16:48:50,918 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 16:48:50,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 16:48:50,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 16:48:50,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 16:48:50,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 16:48:50,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 16:48:50,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 16:48:50,953 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 16:48:50,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 16:48:50,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 16:48:50,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 16:48:50,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 16:48:50,954 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 16:48:50,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 16:48:50,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 16:48:50,955 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 16:48:50,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 16:48:50,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 16:48:50,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 16:48:50,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 16:48:50,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 16:48:50,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 16:48:50,958 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 16:48:50,958 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 16:48:50,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 16:48:50,959 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 16:48:50,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 16:48:50,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 16:48:50,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 16:48:50,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 16:48:50,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:48:50,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 16:48:50,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 16:48:50,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 16:48:50,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 16:48:50,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 16:48:50,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 16:48:50,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 16:48:50,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 16:48:50,965 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 16:48:50,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d56d00b0e11a2318dd34043554d32ecd228c75c86ba1d3fcabadd2cc271a05aa [2024-11-19 16:48:51,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 16:48:51,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 16:48:51,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 16:48:51,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 16:48:51,265 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 16:48:51,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_4.c [2024-11-19 16:48:52,789 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 16:48:52,981 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 16:48:52,981 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_4.c [2024-11-19 16:48:52,988 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd25aa249/627702c2b60548b1bf75b66637abca2a/FLAGd7932e6fa [2024-11-19 16:48:53,369 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd25aa249/627702c2b60548b1bf75b66637abca2a [2024-11-19 16:48:53,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 16:48:53,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 16:48:53,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 16:48:53,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 16:48:53,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 16:48:53,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd41bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53, skipping insertion in model container [2024-11-19 16:48:53,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 16:48:53,576 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-programs/partial_mod_count_4.c[323,336] [2024-11-19 16:48:53,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:48:53,606 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 16:48:53,617 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-programs/partial_mod_count_4.c[323,336] [2024-11-19 16:48:53,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:48:53,643 INFO L204 MainTranslator]: Completed translation [2024-11-19 16:48:53,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53 WrapperNode [2024-11-19 16:48:53,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 16:48:53,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 16:48:53,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 16:48:53,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 16:48:53,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,677 INFO L138 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2024-11-19 16:48:53,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 16:48:53,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 16:48:53,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 16:48:53,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 16:48:53,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,691 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,702 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 16:48:53,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 16:48:53,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 16:48:53,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 16:48:53,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 16:48:53,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (1/1) ... [2024-11-19 16:48:53,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:48:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:48:53,765 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 16:48:53,769 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 16:48:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 16:48:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 16:48:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 16:48:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 16:48:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 16:48:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 16:48:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 16:48:53,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 16:48:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 16:48:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 16:48:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 16:48:53,921 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 16:48:53,930 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 16:48:54,171 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-19 16:48:54,171 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 16:48:54,184 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 16:48:54,184 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 16:48:54,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:54 BoogieIcfgContainer [2024-11-19 16:48:54,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 16:48:54,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 16:48:54,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 16:48:54,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 16:48:54,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:48:53" (1/3) ... [2024-11-19 16:48:54,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9b9649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:54, skipping insertion in model container [2024-11-19 16:48:54,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:53" (2/3) ... [2024-11-19 16:48:54,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9b9649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:54, skipping insertion in model container [2024-11-19 16:48:54,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:54" (3/3) ... [2024-11-19 16:48:54,197 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_4.c [2024-11-19 16:48:54,213 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 16:48:54,214 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 16:48:54,266 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 16:48:54,272 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;@11bb0b83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 16:48:54,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 16:48:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 16:48:54,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:48:54,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:48:54,281 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:48:54,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:48:54,285 INFO L85 PathProgramCache]: Analyzing trace with hash -694175938, now seen corresponding path program 1 times [2024-11-19 16:48:54,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:48:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568530929] [2024-11-19 16:48:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:48:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:48:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:48:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:48:54,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:48:54,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568530929] [2024-11-19 16:48:54,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568530929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:48:54,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:48:54,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 16:48:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112793208] [2024-11-19 16:48:54,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:48:54,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 16:48:54,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:48:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 16:48:54,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 16:48:54,475 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:54,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:48:54,489 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2024-11-19 16:48:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 16:48:54,492 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 16:48:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:48:54,498 INFO L225 Difference]: With dead ends: 31 [2024-11-19 16:48:54,499 INFO L226 Difference]: Without dead ends: 14 [2024-11-19 16:48:54,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 16:48:54,506 INFO L432 NwaCegarLoop]: 21 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, 21 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 16:48:54,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:48:54,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-19 16:48:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-19 16:48:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2024-11-19 16:48:54,539 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2024-11-19 16:48:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:48:54,539 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-11-19 16:48:54,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2024-11-19 16:48:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 16:48:54,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:48:54,541 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:48:54,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 16:48:54,542 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:48:54,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:48:54,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1866781837, now seen corresponding path program 1 times [2024-11-19 16:48:54,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:48:54,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740788069] [2024-11-19 16:48:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:48:54,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:48:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:48:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:48:54,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:48:54,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740788069] [2024-11-19 16:48:54,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740788069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:48:54,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:48:54,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 16:48:54,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215239228] [2024-11-19 16:48:54,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:48:54,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 16:48:54,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:48:54,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 16:48:54,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 16:48:54,728 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:48:54,789 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2024-11-19 16:48:54,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 16:48:54,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 16:48:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:48:54,790 INFO L225 Difference]: With dead ends: 37 [2024-11-19 16:48:54,791 INFO L226 Difference]: Without dead ends: 25 [2024-11-19 16:48:54,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 16:48:54,793 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:48:54,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:48:54,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-19 16:48:54,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2024-11-19 16:48:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-19 16:48:54,801 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2024-11-19 16:48:54,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:48:54,802 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-19 16:48:54,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:54,803 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-19 16:48:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 16:48:54,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:48:54,804 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:48:54,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 16:48:54,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:48:54,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:48:54,806 INFO L85 PathProgramCache]: Analyzing trace with hash 97563565, now seen corresponding path program 1 times [2024-11-19 16:48:54,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:48:54,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678761066] [2024-11-19 16:48:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:48:54,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:48:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:48:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:48:54,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:48:54,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678761066] [2024-11-19 16:48:54,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678761066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:48:54,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413691622] [2024-11-19 16:48:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:48:54,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:48:54,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:48:54,980 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 16:48:54,981 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 16:48:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:48:55,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 16:48:55,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:48:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:48:55,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:48:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:48:55,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413691622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:48:55,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:48:55,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 16:48:55,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458153821] [2024-11-19 16:48:55,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:48:55,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 16:48:55,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:48:55,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 16:48:55,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-19 16:48:55,190 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:55,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:48:55,308 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2024-11-19 16:48:55,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 16:48:55,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 16:48:55,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:48:55,310 INFO L225 Difference]: With dead ends: 61 [2024-11-19 16:48:55,310 INFO L226 Difference]: Without dead ends: 49 [2024-11-19 16:48:55,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-19 16:48:55,312 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 104 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:48:55,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 32 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:48:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-19 16:48:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 24. [2024-11-19 16:48:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-19 16:48:55,318 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2024-11-19 16:48:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:48:55,319 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-19 16:48:55,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-19 16:48:55,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 16:48:55,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:48:55,320 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:48:55,328 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 16:48:55,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:48:55,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:48:55,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:48:55,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1361285581, now seen corresponding path program 1 times [2024-11-19 16:48:55,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:48:55,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788362726] [2024-11-19 16:48:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:48:55,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:48:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:48:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 16:48:55,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:48:55,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788362726] [2024-11-19 16:48:55,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788362726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:48:55,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:48:55,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 16:48:55,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061100069] [2024-11-19 16:48:55,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:48:55,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 16:48:55,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:48:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 16:48:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 16:48:55,913 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:55,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:48:55,982 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2024-11-19 16:48:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 16:48:55,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-19 16:48:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:48:55,984 INFO L225 Difference]: With dead ends: 38 [2024-11-19 16:48:55,984 INFO L226 Difference]: Without dead ends: 36 [2024-11-19 16:48:55,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-19 16:48:55,985 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:48:55,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 26 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:48:55,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-19 16:48:55,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-19 16:48:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-19 16:48:55,993 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2024-11-19 16:48:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:48:55,994 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-19 16:48:55,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-19 16:48:55,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-19 16:48:55,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:48:55,995 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:48:55,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 16:48:55,996 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:48:55,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:48:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash -190503962, now seen corresponding path program 1 times [2024-11-19 16:48:55,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:48:55,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500761857] [2024-11-19 16:48:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:48:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:48:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:48:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 16:48:56,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:48:56,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500761857] [2024-11-19 16:48:56,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500761857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:48:56,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663982895] [2024-11-19 16:48:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:48:56,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:48:56,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:48:56,336 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 16:48:56,337 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 16:48:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:48:56,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 16:48:56,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:48:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 16:48:56,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:48:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 16:48:56,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663982895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:48:56,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:48:56,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-19 16:48:56,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930195638] [2024-11-19 16:48:56,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:48:56,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 16:48:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:48:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 16:48:56,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-19 16:48:56,674 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:48:58,358 INFO L93 Difference]: Finished difference Result 298 states and 359 transitions. [2024-11-19 16:48:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-19 16:48:58,358 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-19 16:48:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:48:58,366 INFO L225 Difference]: With dead ends: 298 [2024-11-19 16:48:58,366 INFO L226 Difference]: Without dead ends: 272 [2024-11-19 16:48:58,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2758 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2137, Invalid=4835, Unknown=0, NotChecked=0, Total=6972 [2024-11-19 16:48:58,370 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 425 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 16:48:58,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 121 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 16:48:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-19 16:48:58,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 60. [2024-11-19 16:48:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-11-19 16:48:58,394 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 27 [2024-11-19 16:48:58,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:48:58,395 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-11-19 16:48:58,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-11-19 16:48:58,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 16:48:58,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:48:58,397 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 16:48:58,407 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 16:48:58,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:48:58,598 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:48:58,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:48:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash -569966633, now seen corresponding path program 2 times [2024-11-19 16:48:58,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:48:58,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045821353] [2024-11-19 16:48:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:48:58,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:48:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:48:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 79 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-19 16:48:58,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:48:58,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045821353] [2024-11-19 16:48:58,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045821353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:48:58,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451015630] [2024-11-19 16:48:58,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:48:58,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:48:58,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:48:58,986 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 16:48:58,987 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 16:48:59,066 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:48:59,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:48:59,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 16:48:59,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:48:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 16:48:59,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:48:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 16:48:59,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451015630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:48:59,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:48:59,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2024-11-19 16:48:59,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417056457] [2024-11-19 16:48:59,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:48:59,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 16:48:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:48:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 16:48:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=618, Unknown=0, NotChecked=0, Total=992 [2024-11-19 16:48:59,587 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 32 states, 32 states have (on average 3.03125) internal successors, (97), 31 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:49:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:49:00,237 INFO L93 Difference]: Finished difference Result 670 states and 789 transitions. [2024-11-19 16:49:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 16:49:00,238 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 31 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-19 16:49:00,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:49:00,241 INFO L225 Difference]: With dead ends: 670 [2024-11-19 16:49:00,241 INFO L226 Difference]: Without dead ends: 629 [2024-11-19 16:49:00,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=671, Invalid=1135, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 16:49:00,244 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 751 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 16:49:00,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 148 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 16:49:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-19 16:49:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 96. [2024-11-19 16:49:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 95 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:49:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 112 transitions. [2024-11-19 16:49:00,277 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 112 transitions. Word has length 51 [2024-11-19 16:49:00,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:49:00,278 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 112 transitions. [2024-11-19 16:49:00,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 31 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:49:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 112 transitions. [2024-11-19 16:49:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-19 16:49:00,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:49:00,282 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 11, 11, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 16:49:00,293 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 16:49:00,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:49:00,483 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:49:00,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:49:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2030267241, now seen corresponding path program 3 times [2024-11-19 16:49:00,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:49:00,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938630313] [2024-11-19 16:49:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:49:00,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:49:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:49:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 373 proven. 187 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-19 16:49:01,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:49:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938630313] [2024-11-19 16:49:01,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938630313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:49:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280271949] [2024-11-19 16:49:01,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:49:01,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:49:01,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:49:01,336 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 16:49:01,338 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 16:49:01,421 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 16:49:01,421 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:49:01,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 16:49:01,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:49:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-19 16:49:01,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:49:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-19 16:49:02,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280271949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:49:02,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:49:02,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 25 [2024-11-19 16:49:02,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074740811] [2024-11-19 16:49:02,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:49:02,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 16:49:02,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:49:02,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 16:49:02,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2024-11-19 16:49:02,914 INFO L87 Difference]: Start difference. First operand 96 states and 112 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 25 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:49:06,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:49:06,722 INFO L93 Difference]: Finished difference Result 660 states and 813 transitions. [2024-11-19 16:49:06,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2024-11-19 16:49:06,722 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 25 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-19 16:49:06,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:49:06,725 INFO L225 Difference]: With dead ends: 660 [2024-11-19 16:49:06,725 INFO L226 Difference]: Without dead ends: 601 [2024-11-19 16:49:06,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18140 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=10199, Invalid=26857, Unknown=0, NotChecked=0, Total=37056 [2024-11-19 16:49:06,738 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 501 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 16:49:06,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 226 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 16:49:06,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-19 16:49:06,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 126. [2024-11-19 16:49:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.168) internal successors, (146), 125 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:49:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 146 transitions. [2024-11-19 16:49:06,755 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 146 transitions. Word has length 87 [2024-11-19 16:49:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:49:06,756 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 146 transitions. [2024-11-19 16:49:06,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 25 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:49:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 146 transitions. [2024-11-19 16:49:06,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 16:49:06,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:49:06,758 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 12, 10, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-19 16:49:06,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 16:49:06,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:49:06,959 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:49:06,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:49:06,959 INFO L85 PathProgramCache]: Analyzing trace with hash -787599464, now seen corresponding path program 4 times [2024-11-19 16:49:06,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:49:06,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129913887] [2024-11-19 16:49:06,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:49:06,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:49:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:49:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 367 proven. 222 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-19 16:49:07,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:49:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129913887] [2024-11-19 16:49:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129913887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:49:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349404753] [2024-11-19 16:49:07,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 16:49:07,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:49:07,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:49:07,857 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 16:49:07,862 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 16:49:08,288 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 16:49:08,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:49:08,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 16:49:08,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:49:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-19 16:49:08,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:49:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-19 16:49:09,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349404753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:49:09,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:49:09,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25, 25] total 62 [2024-11-19 16:49:09,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922952615] [2024-11-19 16:49:09,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:49:09,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-19 16:49:09,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:49:09,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-19 16:49:09,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1421, Invalid=2485, Unknown=0, NotChecked=0, Total=3906 [2024-11-19 16:49:09,574 INFO L87 Difference]: Start difference. First operand 126 states and 146 transitions. Second operand has 63 states, 63 states have (on average 3.015873015873016) internal successors, (190), 62 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:49:11,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:49:11,009 INFO L93 Difference]: Finished difference Result 2647 states and 3102 transitions. [2024-11-19 16:49:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-19 16:49:11,009 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.015873015873016) internal successors, (190), 62 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-19 16:49:11,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:49:11,017 INFO L225 Difference]: With dead ends: 2647 [2024-11-19 16:49:11,017 INFO L226 Difference]: Without dead ends: 2558 [2024-11-19 16:49:11,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2218 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2594, Invalid=4716, Unknown=0, NotChecked=0, Total=7310 [2024-11-19 16:49:11,020 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1791 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 16:49:11,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 284 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 16:49:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2024-11-19 16:49:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 198. [2024-11-19 16:49:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.1725888324873097) internal successors, (231), 197 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:49:11,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 231 transitions. [2024-11-19 16:49:11,057 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 231 transitions. Word has length 117 [2024-11-19 16:49:11,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:49:11,057 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 231 transitions. [2024-11-19 16:49:11,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.015873015873016) internal successors, (190), 62 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:49:11,058 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 231 transitions. [2024-11-19 16:49:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-19 16:49:11,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:49:11,060 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-19 16:49:11,071 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 16:49:11,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:49:11,261 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:49:11,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:49:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2013848298, now seen corresponding path program 5 times [2024-11-19 16:49:11,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:49:11,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919705667] [2024-11-19 16:49:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:49:11,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:49:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:49:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3305 backedges. 1609 proven. 805 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2024-11-19 16:49:13,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:49:13,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919705667] [2024-11-19 16:49:13,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919705667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:49:13,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534174572] [2024-11-19 16:49:13,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 16:49:13,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:49:13,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:49:13,481 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 16:49:13,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process