./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/zero_sum2.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 9040b900faf23bbe274a78992b583d0e69cb8306e352833058a15642ef75b25a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:11:52,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:11:53,017 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:11:53,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:11:53,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:11:53,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:11:53,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:11:53,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:11:53,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:11:53,052 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:11:53,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:11:53,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:11:53,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:11:53,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:11:53,055 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:11:53,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:11:53,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:11:53,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:11:53,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:11:53,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:11:53,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:11:53,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:11:53,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:11:53,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:11:53,060 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:11:53,060 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:11:53,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:11:53,060 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:11:53,061 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:11:53,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:11:53,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:11:53,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:11:53,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:11:53,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:11:53,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:11:53,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:11:53,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:11:53,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:11:53,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:11:53,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:11:53,063 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:11:53,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:11:53,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9040b900faf23bbe274a78992b583d0e69cb8306e352833058a15642ef75b25a [2024-11-09 18:11:53,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:11:53,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:11:53,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:11:53,310 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:11:53,311 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:11:53,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum2.c [2024-11-09 18:11:54,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:11:54,727 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:11:54,728 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum2.c [2024-11-09 18:11:54,736 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3818f544f/90086f69fecc4f218b19d5007dd382d8/FLAG4eb8d49b8 [2024-11-09 18:11:54,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3818f544f/90086f69fecc4f218b19d5007dd382d8 [2024-11-09 18:11:54,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:11:54,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:11:54,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:11:54,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:11:54,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:11:54,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:11:54" (1/1) ... [2024-11-09 18:11:54,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cb1966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:54, skipping insertion in model container [2024-11-09 18:11:54,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:11:54" (1/1) ... [2024-11-09 18:11:54,786 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:11:54,947 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum2.c[400,413] [2024-11-09 18:11:54,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:11:54,973 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:11:54,984 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum2.c[400,413] [2024-11-09 18:11:54,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:11:55,007 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:11:55,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55 WrapperNode [2024-11-09 18:11:55,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:11:55,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:11:55,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:11:55,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:11:55,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,038 INFO L138 Inliner]: procedures = 15, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-11-09 18:11:55,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:11:55,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:11:55,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:11:55,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:11:55,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,063 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 18:11:55,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,067 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:11:55,072 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:11:55,073 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:11:55,073 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:11:55,074 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (1/1) ... [2024-11-09 18:11:55,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:11:55,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:11:55,106 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) [2024-11-09 18:11:55,110 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 [2024-11-09 18:11:55,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:11:55,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:11:55,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:11:55,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:11:55,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:11:55,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:11:55,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:11:55,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:11:55,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:11:55,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:11:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:11:55,273 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:11:55,279 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:11:55,412 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-09 18:11:55,415 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:11:55,432 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:11:55,432 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:11:55,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:11:55 BoogieIcfgContainer [2024-11-09 18:11:55,433 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:11:55,436 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:11:55,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:11:55,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:11:55,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:11:54" (1/3) ... [2024-11-09 18:11:55,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbfbf41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:11:55, skipping insertion in model container [2024-11-09 18:11:55,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:11:55" (2/3) ... [2024-11-09 18:11:55,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbfbf41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:11:55, skipping insertion in model container [2024-11-09 18:11:55,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:11:55" (3/3) ... [2024-11-09 18:11:55,443 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum2.c [2024-11-09 18:11:55,460 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:11:55,461 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:11:55,521 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:11:55,526 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;@1a04658f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:11:55,529 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:11:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 states have internal predecessors, (39), 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) [2024-11-09 18:11:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 18:11:55,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:11:55,538 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:11:55,539 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:11:55,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:11:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash 131574968, now seen corresponding path program 1 times [2024-11-09 18:11:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:11:55,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337373874] [2024-11-09 18:11:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:11:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:11:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:11:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:11:55,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:11:55,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337373874] [2024-11-09 18:11:55,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337373874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:11:55,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:11:55,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:11:55,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062986704] [2024-11-09 18:11:55,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:11:55,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:11:55,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:11:55,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:11:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:11:55,706 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 states have internal predecessors, (39), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-11-09 18:11:55,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:11:55,716 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2024-11-09 18:11:55,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:11:55,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2024-11-09 18:11:55,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:11:55,723 INFO L225 Difference]: With dead ends: 50 [2024-11-09 18:11:55,724 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 18:11:55,726 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 [2024-11-09 18:11:55,728 INFO L432 NwaCegarLoop]: 32 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, 32 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 [2024-11-09 18:11:55,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:11:55,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 18:11:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 18:11:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2024-11-09 18:11:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-09 18:11:55,756 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2024-11-09 18:11:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:11:55,757 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-09 18:11:55,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-11-09 18:11:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-09 18:11:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 18:11:55,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:11:55,758 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:11:55,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:11:55,759 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:11:55,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:11:55,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1145332249, now seen corresponding path program 1 times [2024-11-09 18:11:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:11:55,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823324625] [2024-11-09 18:11:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:11:55,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:11:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:11:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:11:55,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:11:55,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823324625] [2024-11-09 18:11:55,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823324625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:11:55,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:11:55,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:11:55,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536260566] [2024-11-09 18:11:55,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:11:55,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:11:55,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:11:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:11:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:11:55,925 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-09 18:11:55,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:11:55,946 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-11-09 18:11:55,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:11:55,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 [2024-11-09 18:11:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:11:55,947 INFO L225 Difference]: With dead ends: 41 [2024-11-09 18:11:55,947 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 18:11:55,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:11:55,948 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:11:55,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:11:55,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 18:11:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-09 18:11:55,952 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) [2024-11-09 18:11:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-09 18:11:55,953 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 21 [2024-11-09 18:11:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:11:55,953 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-09 18:11:55,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-09 18:11:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-09 18:11:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 18:11:55,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:11:55,954 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:11:55,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:11:55,955 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:11:55,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:11:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash 675862136, now seen corresponding path program 1 times [2024-11-09 18:11:55,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:11:55,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296854739] [2024-11-09 18:11:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:11:55,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:11:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:11:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:11:56,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:11:56,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296854739] [2024-11-09 18:11:56,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296854739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:11:56,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:11:56,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:11:56,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294474371] [2024-11-09 18:11:56,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:11:56,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:11:56,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:11:56,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:11:56,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:11:56,043 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-09 18:11:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:11:56,082 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-11-09 18:11:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:11:56,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 23 [2024-11-09 18:11:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:11:56,083 INFO L225 Difference]: With dead ends: 46 [2024-11-09 18:11:56,083 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 18:11:56,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:11:56,084 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:11:56,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:11:56,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 18:11:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 18:11:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 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) [2024-11-09 18:11:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-09 18:11:56,093 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2024-11-09 18:11:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:11:56,094 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-09 18:11:56,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-09 18:11:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-09 18:11:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 18:11:56,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:11:56,095 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:11:56,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:11:56,096 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:11:56,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:11:56,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1506281336, now seen corresponding path program 1 times [2024-11-09 18:11:56,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:11:56,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508626041] [2024-11-09 18:11:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:11:56,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:11:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:11:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:11:56,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:11:56,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508626041] [2024-11-09 18:11:56,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508626041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:11:56,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639352810] [2024-11-09 18:11:56,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:11:56,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:11:56,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:11:56,187 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) [2024-11-09 18:11:56,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:11:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:11:56,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:11:56,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:11:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:11:56,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:11:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:11:56,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639352810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:11:56,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:11:56,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 18:11:56,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045210568] [2024-11-09 18:11:56,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:11:56,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:11:56,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:11:56,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:11:56,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:11:56,358 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2024-11-09 18:11:56,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:11:56,395 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-09 18:11:56,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:11:56,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 31 [2024-11-09 18:11:56,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:11:56,396 INFO L225 Difference]: With dead ends: 59 [2024-11-09 18:11:56,396 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 18:11:56,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:11:56,397 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:11:56,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:11:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 18:11:56,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-09 18:11:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 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) [2024-11-09 18:11:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-09 18:11:56,406 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 31 [2024-11-09 18:11:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:11:56,407 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-09 18:11:56,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2024-11-09 18:11:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-09 18:11:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 18:11:56,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:11:56,408 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:11:56,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:11:56,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:11:56,609 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:11:56,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:11:56,610 INFO L85 PathProgramCache]: Analyzing trace with hash -357969641, now seen corresponding path program 2 times [2024-11-09 18:11:56,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:11:56,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152470948] [2024-11-09 18:11:56,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:11:56,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:11:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:11:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:11:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:11:56,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152470948] [2024-11-09 18:11:56,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152470948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:11:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612406071] [2024-11-09 18:11:56,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:11:56,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:11:56,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:11:56,713 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) [2024-11-09 18:11:56,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:11:56,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:11:56,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:11:56,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:11:56,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:11:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:11:56,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:11:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:11:56,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612406071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:11:56,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:11:56,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 18:11:56,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904620297] [2024-11-09 18:11:56,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:11:56,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 18:11:56,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:11:56,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 18:11:56,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:11:56,889 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2024-11-09 18:11:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:11:56,958 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-11-09 18:11:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:11:56,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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 33 [2024-11-09 18:11:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:11:56,960 INFO L225 Difference]: With dead ends: 62 [2024-11-09 18:11:56,960 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 18:11:56,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:11:56,961 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:11:56,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 56 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:11:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 18:11:56,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-09 18:11:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 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) [2024-11-09 18:11:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-09 18:11:56,971 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 33 [2024-11-09 18:11:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:11:56,972 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-09 18:11:56,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2024-11-09 18:11:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-09 18:11:56,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 18:11:56,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:11:56,973 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:11:56,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:11:57,173 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 [2024-11-09 18:11:57,173 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:11:57,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:11:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash -462167529, now seen corresponding path program 3 times [2024-11-09 18:11:57,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:11:57,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647447722] [2024-11-09 18:11:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:11:57,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:11:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:11:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:11:58,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:11:58,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647447722] [2024-11-09 18:11:58,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647447722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:11:58,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628622986] [2024-11-09 18:11:58,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:11:58,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:11:58,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:11:58,264 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) [2024-11-09 18:11:58,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:11:58,317 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:11:58,317 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:11:58,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 18:11:58,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:11:58,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:11:58,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:11:58,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 18:11:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:11:58,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:11:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:11:59,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628622986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:11:59,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:11:59,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 29 [2024-11-09 18:11:59,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587843277] [2024-11-09 18:11:59,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:11:59,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 18:11:59,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:11:59,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 18:11:59,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:11:59,074 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 29 states, 29 states have (on average 3.6551724137931036) internal successors, (106), 29 states have internal predecessors, (106), 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) [2024-11-09 18:11:59,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:11:59,441 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2024-11-09 18:11:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:11:59,441 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.6551724137931036) internal successors, (106), 29 states have internal predecessors, (106), 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 41 [2024-11-09 18:11:59,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:11:59,442 INFO L225 Difference]: With dead ends: 70 [2024-11-09 18:11:59,442 INFO L226 Difference]: Without dead ends: 65 [2024-11-09 18:11:59,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 18:11:59,443 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:11:59,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 307 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:11:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-09 18:11:59,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2024-11-09 18:11:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 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) [2024-11-09 18:11:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2024-11-09 18:11:59,449 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 41 [2024-11-09 18:11:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:11:59,450 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2024-11-09 18:11:59,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.6551724137931036) internal successors, (106), 29 states have internal predecessors, (106), 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) [2024-11-09 18:11:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2024-11-09 18:11:59,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:11:59,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:11:59,451 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:11:59,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:11:59,654 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 [2024-11-09 18:11:59,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:11:59,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:11:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash 160574838, now seen corresponding path program 4 times [2024-11-09 18:11:59,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:11:59,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875403502] [2024-11-09 18:11:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:11:59,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:11:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:11:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:11:59,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:11:59,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875403502] [2024-11-09 18:11:59,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875403502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:11:59,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672668865] [2024-11-09 18:11:59,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:11:59,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:11:59,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:11:59,739 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) [2024-11-09 18:11:59,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:11:59,786 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:11:59,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:11:59,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:11:59,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:11:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:11:59,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:11:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:11:59,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672668865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:11:59,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:11:59,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-09 18:11:59,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178447601] [2024-11-09 18:11:59,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:11:59,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 18:11:59,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:11:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 18:11:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:11:59,932 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 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) [2024-11-09 18:12:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:00,036 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2024-11-09 18:12:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 18:12:00,037 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 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 43 [2024-11-09 18:12:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:00,037 INFO L225 Difference]: With dead ends: 127 [2024-11-09 18:12:00,038 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 18:12:00,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:12:00,039 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:00,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 145 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 18:12:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2024-11-09 18:12:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 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) [2024-11-09 18:12:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2024-11-09 18:12:00,044 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 43 [2024-11-09 18:12:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:00,044 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2024-11-09 18:12:00,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 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) [2024-11-09 18:12:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2024-11-09 18:12:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 18:12:00,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:00,045 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:00,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:12:00,249 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 [2024-11-09 18:12:00,250 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:00,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1444331607, now seen corresponding path program 5 times [2024-11-09 18:12:00,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:00,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817979733] [2024-11-09 18:12:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:00,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 18:12:00,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:00,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817979733] [2024-11-09 18:12:00,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817979733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:00,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123435613] [2024-11-09 18:12:00,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:12:00,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:00,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:00,326 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) [2024-11-09 18:12:00,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:12:00,377 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 18:12:00,377 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:00,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:12:00,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 18:12:00,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 18:12:00,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123435613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:00,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:00,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-09 18:12:00,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924982159] [2024-11-09 18:12:00,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:00,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 18:12:00,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:00,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 18:12:00,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:12:00,503 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 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) [2024-11-09 18:12:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:00,600 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-09 18:12:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:12:00,601 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 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 45 [2024-11-09 18:12:00,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:00,601 INFO L225 Difference]: With dead ends: 71 [2024-11-09 18:12:00,601 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 18:12:00,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:12:00,602 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 53 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:00,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 128 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 18:12:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-09 18:12:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 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) [2024-11-09 18:12:00,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-11-09 18:12:00,606 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 45 [2024-11-09 18:12:00,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:00,607 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-11-09 18:12:00,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 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) [2024-11-09 18:12:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-11-09 18:12:00,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:12:00,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:00,608 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:00,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:00,811 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 [2024-11-09 18:12:00,812 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:00,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:00,813 INFO L85 PathProgramCache]: Analyzing trace with hash 907387382, now seen corresponding path program 6 times [2024-11-09 18:12:00,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:00,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736790903] [2024-11-09 18:12:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:00,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:02,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:02,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736790903] [2024-11-09 18:12:02,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736790903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:02,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520706885] [2024-11-09 18:12:02,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:12:02,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:02,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:02,132 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) [2024-11-09 18:12:02,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:12:02,187 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 18:12:02,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:02,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-09 18:12:02,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:02,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:12:02,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:12:02,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:02,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 39 [2024-11-09 18:12:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:12:02,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:12:03,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520706885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:03,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:03,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 14] total 46 [2024-11-09 18:12:03,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152142071] [2024-11-09 18:12:03,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:03,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-09 18:12:03,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:03,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-09 18:12:03,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1884, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 18:12:03,248 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 46 states, 46 states have (on average 2.9347826086956523) internal successors, (135), 46 states have internal predecessors, (135), 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) [2024-11-09 18:12:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:04,356 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2024-11-09 18:12:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 18:12:04,357 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9347826086956523) internal successors, (135), 46 states have internal predecessors, (135), 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 [2024-11-09 18:12:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:04,357 INFO L225 Difference]: With dead ends: 86 [2024-11-09 18:12:04,357 INFO L226 Difference]: Without dead ends: 81 [2024-11-09 18:12:04,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=404, Invalid=4018, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 18:12:04,359 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:04,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 561 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:12:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-09 18:12:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2024-11-09 18:12:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 74 states have internal predecessors, (82), 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) [2024-11-09 18:12:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2024-11-09 18:12:04,367 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 51 [2024-11-09 18:12:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:04,367 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2024-11-09 18:12:04,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9347826086956523) internal successors, (135), 46 states have internal predecessors, (135), 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) [2024-11-09 18:12:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2024-11-09 18:12:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 18:12:04,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:04,368 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:04,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:12:04,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:04,573 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:04,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2042851733, now seen corresponding path program 7 times [2024-11-09 18:12:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:04,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742368477] [2024-11-09 18:12:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:12:04,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:04,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742368477] [2024-11-09 18:12:04,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742368477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:04,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175063982] [2024-11-09 18:12:04,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:12:04,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:04,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:04,701 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:04,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:12:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:04,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:12:04,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:12:04,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:12:04,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175063982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:04,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:04,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:12:04,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34466130] [2024-11-09 18:12:04,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:04,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:12:04,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:04,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:12:04,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:12:04,916 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2024-11-09 18:12:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:05,004 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2024-11-09 18:12:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:12:05,005 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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 53 [2024-11-09 18:12:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:05,006 INFO L225 Difference]: With dead ends: 147 [2024-11-09 18:12:05,006 INFO L226 Difference]: Without dead ends: 77 [2024-11-09 18:12:05,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:12:05,008 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:05,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 156 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:05,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-09 18:12:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-09 18:12:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.105263157894737) internal successors, (84), 76 states have internal predecessors, (84), 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) [2024-11-09 18:12:05,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2024-11-09 18:12:05,021 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 53 [2024-11-09 18:12:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:05,021 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2024-11-09 18:12:05,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2024-11-09 18:12:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2024-11-09 18:12:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 18:12:05,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:05,022 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:05,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:05,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:05,223 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:05,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1039750668, now seen corresponding path program 8 times [2024-11-09 18:12:05,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:05,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546755333] [2024-11-09 18:12:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:05,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 18:12:05,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:05,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546755333] [2024-11-09 18:12:05,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546755333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:05,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342762877] [2024-11-09 18:12:05,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:12:05,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:05,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:05,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:05,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:12:05,381 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:12:05,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:05,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:12:05,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 18:12:05,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 18:12:05,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342762877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:05,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:05,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:12:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197166171] [2024-11-09 18:12:05,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:05,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:12:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:05,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:12:05,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:12:05,498 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2024-11-09 18:12:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:05,569 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2024-11-09 18:12:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 18:12:05,569 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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 55 [2024-11-09 18:12:05,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:05,570 INFO L225 Difference]: With dead ends: 108 [2024-11-09 18:12:05,570 INFO L226 Difference]: Without dead ends: 62 [2024-11-09 18:12:05,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 96 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:12:05,570 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 56 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:05,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 123 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:05,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-09 18:12:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-09 18:12:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 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) [2024-11-09 18:12:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2024-11-09 18:12:05,576 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 55 [2024-11-09 18:12:05,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:05,576 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2024-11-09 18:12:05,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2024-11-09 18:12:05,576 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2024-11-09 18:12:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 18:12:05,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:05,576 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:05,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:12:05,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 18:12:05,781 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:05,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1158608661, now seen corresponding path program 9 times [2024-11-09 18:12:05,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:05,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515415681] [2024-11-09 18:12:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:05,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:07,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515415681] [2024-11-09 18:12:07,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515415681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715318048] [2024-11-09 18:12:07,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:12:07,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:07,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:07,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:07,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:12:07,363 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 18:12:07,364 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:07,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-09 18:12:07,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:07,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:12:20,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:12:20,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:12:20,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:20,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-09 18:12:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 8 proven. 80 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:20,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:22,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 18:12:22,196 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 18:12:22,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2024-11-09 18:12:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:12:22,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715318048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:22,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:22,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 27] total 73 [2024-11-09 18:12:22,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860477920] [2024-11-09 18:12:22,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:22,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-09 18:12:22,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:22,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-09 18:12:22,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=4803, Unknown=2, NotChecked=0, Total=5256 [2024-11-09 18:12:22,257 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 73 states, 73 states have (on average 2.26027397260274) internal successors, (165), 73 states have internal predecessors, (165), 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) [2024-11-09 18:12:25,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 18:12:36,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 18:12:41,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 18:12:42,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:42,968 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2024-11-09 18:12:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 18:12:42,972 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.26027397260274) internal successors, (165), 73 states have internal predecessors, (165), 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 61 [2024-11-09 18:12:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:42,973 INFO L225 Difference]: With dead ends: 143 [2024-11-09 18:12:42,973 INFO L226 Difference]: Without dead ends: 137 [2024-11-09 18:12:42,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2353 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=919, Invalid=8978, Unknown=3, NotChecked=0, Total=9900 [2024-11-09 18:12:42,978 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 136 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 173 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:42,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1159 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1507 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2024-11-09 18:12:42,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-09 18:12:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 78. [2024-11-09 18:12:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 77 states have internal predecessors, (84), 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) [2024-11-09 18:12:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2024-11-09 18:12:42,997 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 61 [2024-11-09 18:12:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:42,998 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2024-11-09 18:12:42,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.26027397260274) internal successors, (165), 73 states have internal predecessors, (165), 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) [2024-11-09 18:12:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2024-11-09 18:12:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 18:12:42,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:42,999 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:43,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:43,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:43,199 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:43,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1346635020, now seen corresponding path program 10 times [2024-11-09 18:12:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:43,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137915881] [2024-11-09 18:12:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:43,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:12:43,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:43,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137915881] [2024-11-09 18:12:43,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137915881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:43,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184356190] [2024-11-09 18:12:43,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:12:43,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:43,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:43,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:43,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:12:43,400 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:12:43,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:43,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:12:43,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:12:43,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:12:43,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184356190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:43,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:43,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-09 18:12:43,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877526105] [2024-11-09 18:12:43,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:43,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 18:12:43,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:43,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 18:12:43,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:12:43,720 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 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) [2024-11-09 18:12:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:43,935 INFO L93 Difference]: Finished difference Result 188 states and 205 transitions. [2024-11-09 18:12:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 18:12:43,935 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 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 63 [2024-11-09 18:12:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:43,936 INFO L225 Difference]: With dead ends: 188 [2024-11-09 18:12:43,936 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 18:12:43,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:12:43,937 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 70 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:43,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 291 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:12:43,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 18:12:43,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2024-11-09 18:12:43,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.075) internal successors, (86), 80 states have internal predecessors, (86), 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) [2024-11-09 18:12:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2024-11-09 18:12:43,976 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 63 [2024-11-09 18:12:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:43,976 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2024-11-09 18:12:43,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 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) [2024-11-09 18:12:43,977 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2024-11-09 18:12:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 18:12:43,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:43,978 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:44,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 18:12:44,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 18:12:44,179 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:44,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash -285190924, now seen corresponding path program 11 times [2024-11-09 18:12:44,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:44,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488420630] [2024-11-09 18:12:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:44,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 18:12:44,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:44,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488420630] [2024-11-09 18:12:44,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488420630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:44,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770025638] [2024-11-09 18:12:44,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:12:44,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:44,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:44,326 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:44,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:12:44,433 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 18:12:44,433 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:44,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:12:44,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 18:12:44,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 18:12:44,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770025638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:44,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:44,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-09 18:12:44,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916451654] [2024-11-09 18:12:44,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:44,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 18:12:44,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:44,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 18:12:44,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:12:44,698 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 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) [2024-11-09 18:12:44,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:44,909 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2024-11-09 18:12:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:12:44,910 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 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 67 [2024-11-09 18:12:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:44,910 INFO L225 Difference]: With dead ends: 88 [2024-11-09 18:12:44,910 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 18:12:44,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 118 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2024-11-09 18:12:44,911 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 83 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:44,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 280 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 18:12:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-09 18:12:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 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) [2024-11-09 18:12:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-09 18:12:44,926 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 67 [2024-11-09 18:12:44,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:44,926 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-09 18:12:44,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 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) [2024-11-09 18:12:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-09 18:12:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 18:12:44,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:44,927 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:44,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 18:12:45,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 18:12:45,133 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:45,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1867878772, now seen corresponding path program 12 times [2024-11-09 18:12:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705885293] [2024-11-09 18:12:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:45,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:47,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:47,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705885293] [2024-11-09 18:12:47,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705885293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:47,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261120584] [2024-11-09 18:12:47,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:12:47,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:47,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:47,240 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:47,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:12:47,312 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-09 18:12:47,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:47,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-09 18:12:47,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:47,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:12:48,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:48,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 18:12:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 138 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:12:48,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:12:49,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261120584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:49,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:49,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 22, 18] total 64 [2024-11-09 18:12:49,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761117994] [2024-11-09 18:12:49,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:49,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-09 18:12:49,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:49,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-09 18:12:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=3775, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 18:12:49,177 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 64 states, 64 states have (on average 2.921875) internal successors, (187), 64 states have internal predecessors, (187), 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) [2024-11-09 18:12:51,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:51,077 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2024-11-09 18:12:51,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 18:12:51,077 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.921875) internal successors, (187), 64 states have internal predecessors, (187), 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 71 [2024-11-09 18:12:51,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:51,079 INFO L225 Difference]: With dead ends: 118 [2024-11-09 18:12:51,079 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 18:12:51,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=569, Invalid=7803, Unknown=0, NotChecked=0, Total=8372 [2024-11-09 18:12:51,081 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 27 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:51,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1252 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:12:51,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 18:12:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2024-11-09 18:12:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 102 states have internal predecessors, (110), 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) [2024-11-09 18:12:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2024-11-09 18:12:51,096 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 71 [2024-11-09 18:12:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:51,096 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2024-11-09 18:12:51,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.921875) internal successors, (187), 64 states have internal predecessors, (187), 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) [2024-11-09 18:12:51,096 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2024-11-09 18:12:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 18:12:51,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:51,097 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:51,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 18:12:51,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 18:12:51,302 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:51,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:51,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1657108883, now seen corresponding path program 13 times [2024-11-09 18:12:51,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:51,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985394918] [2024-11-09 18:12:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:51,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 18:12:51,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:51,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985394918] [2024-11-09 18:12:51,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985394918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:51,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027711955] [2024-11-09 18:12:51,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:12:51,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:51,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:51,444 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:51,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:12:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:51,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:12:51,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 18:12:51,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 18:12:51,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027711955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:51,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:51,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:12:51,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704319273] [2024-11-09 18:12:51,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:51,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:12:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:51,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:12:51,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:12:51,785 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 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) [2024-11-09 18:12:51,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:51,936 INFO L93 Difference]: Finished difference Result 203 states and 217 transitions. [2024-11-09 18:12:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:12:51,936 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 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 73 [2024-11-09 18:12:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:51,937 INFO L225 Difference]: With dead ends: 203 [2024-11-09 18:12:51,937 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 18:12:51,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 127 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:12:51,938 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 36 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:51,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 223 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 18:12:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-09 18:12:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0769230769230769) internal successors, (112), 104 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) [2024-11-09 18:12:51,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2024-11-09 18:12:51,954 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 73 [2024-11-09 18:12:51,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:51,954 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 112 transitions. [2024-11-09 18:12:51,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 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) [2024-11-09 18:12:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 112 transitions. [2024-11-09 18:12:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 18:12:51,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:51,955 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:51,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 18:12:52,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 18:12:52,156 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:52,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:52,156 INFO L85 PathProgramCache]: Analyzing trace with hash 234867826, now seen corresponding path program 14 times [2024-11-09 18:12:52,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:52,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372597696] [2024-11-09 18:12:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:52,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 20 proven. 52 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 18:12:52,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:52,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372597696] [2024-11-09 18:12:52,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372597696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:52,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790558416] [2024-11-09 18:12:52,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:12:52,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:52,306 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:52,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:12:52,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:12:52,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:52,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:12:52,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 18:12:52,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 18:12:52,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790558416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:52,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:52,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:12:52,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389665923] [2024-11-09 18:12:52,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:52,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:12:52,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:52,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:12:52,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:12:52,590 INFO L87 Difference]: Start difference. First operand 105 states and 112 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 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) [2024-11-09 18:12:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:52,701 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2024-11-09 18:12:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 18:12:52,702 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 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 75 [2024-11-09 18:12:52,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:52,702 INFO L225 Difference]: With dead ends: 144 [2024-11-09 18:12:52,702 INFO L226 Difference]: Without dead ends: 82 [2024-11-09 18:12:52,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 130 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:12:52,703 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 95 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:52,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 145 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:52,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-09 18:12:52,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-09 18:12:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 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) [2024-11-09 18:12:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2024-11-09 18:12:52,715 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 75 [2024-11-09 18:12:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:52,715 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2024-11-09 18:12:52,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 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) [2024-11-09 18:12:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2024-11-09 18:12:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 18:12:52,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:52,716 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:52,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:52,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:52,917 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:52,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:52,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2104697107, now seen corresponding path program 15 times [2024-11-09 18:12:52,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:52,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730540911] [2024-11-09 18:12:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:55,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730540911] [2024-11-09 18:12:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730540911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379387621] [2024-11-09 18:12:55,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:12:55,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:55,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:55,781 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:55,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 18:12:55,889 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 18:12:55,889 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:55,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-09 18:12:55,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:55,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:12:57,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:12:57,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:12:57,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:12:57,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:57,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 46 treesize of output 59 [2024-11-09 18:12:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 12 proven. 168 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:12:57,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:59,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379387621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:59,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:59,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 25, 30] total 84 [2024-11-09 18:12:59,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306372136] [2024-11-09 18:12:59,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:59,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-09 18:12:59,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:59,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-09 18:12:59,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=6448, Unknown=0, NotChecked=0, Total=6972 [2024-11-09 18:12:59,100 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 84 states, 84 states have (on average 2.5357142857142856) internal successors, (213), 84 states have internal predecessors, (213), 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) [2024-11-09 18:13:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:03,616 INFO L93 Difference]: Finished difference Result 206 states and 221 transitions. [2024-11-09 18:13:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-09 18:13:03,617 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.5357142857142856) internal successors, (213), 84 states have internal predecessors, (213), 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 81 [2024-11-09 18:13:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:03,620 INFO L225 Difference]: With dead ends: 206 [2024-11-09 18:13:03,620 INFO L226 Difference]: Without dead ends: 199 [2024-11-09 18:13:03,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3412 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1541, Invalid=15489, Unknown=0, NotChecked=0, Total=17030 [2024-11-09 18:13:03,625 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 239 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 2550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:03,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1839 Invalid, 2550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 18:13:03,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-09 18:13:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 121. [2024-11-09 18:13:03,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0833333333333333) internal successors, (130), 120 states have internal predecessors, (130), 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) [2024-11-09 18:13:03,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2024-11-09 18:13:03,651 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 81 [2024-11-09 18:13:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:03,651 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2024-11-09 18:13:03,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.5357142857142856) internal successors, (213), 84 states have internal predecessors, (213), 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) [2024-11-09 18:13:03,652 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2024-11-09 18:13:03,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 18:13:03,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:03,652 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:03,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 18:13:03,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 18:13:03,857 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:03,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:03,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1606262130, now seen corresponding path program 16 times [2024-11-09 18:13:03,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:03,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886606323] [2024-11-09 18:13:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:03,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 44 proven. 54 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-09 18:13:04,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:04,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886606323] [2024-11-09 18:13:04,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886606323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:04,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097806794] [2024-11-09 18:13:04,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:13:04,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:04,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:04,148 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:04,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 18:13:04,223 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:13:04,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:04,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:13:04,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-09 18:13:04,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-09 18:13:04,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097806794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:04,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:04,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-09 18:13:04,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748703043] [2024-11-09 18:13:04,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:04,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 18:13:04,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 18:13:04,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2024-11-09 18:13:04,710 INFO L87 Difference]: Start difference. First operand 121 states and 130 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 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) [2024-11-09 18:13:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:05,001 INFO L93 Difference]: Finished difference Result 261 states and 280 transitions. [2024-11-09 18:13:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 18:13:05,002 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 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 83 [2024-11-09 18:13:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:05,003 INFO L225 Difference]: With dead ends: 261 [2024-11-09 18:13:05,003 INFO L226 Difference]: Without dead ends: 127 [2024-11-09 18:13:05,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 138 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=283, Invalid=1123, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 18:13:05,004 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:05,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 245 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:13:05,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-09 18:13:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2024-11-09 18:13:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0588235294117647) internal successors, (126), 119 states have internal predecessors, (126), 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) [2024-11-09 18:13:05,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 126 transitions. [2024-11-09 18:13:05,049 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 126 transitions. Word has length 83 [2024-11-09 18:13:05,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:05,050 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 126 transitions. [2024-11-09 18:13:05,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 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) [2024-11-09 18:13:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 126 transitions. [2024-11-09 18:13:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 18:13:05,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:05,050 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:05,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 18:13:05,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:05,251 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:05,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:05,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1148854611, now seen corresponding path program 17 times [2024-11-09 18:13:05,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:05,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809188729] [2024-11-09 18:13:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:05,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 30 proven. 68 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-09 18:13:05,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:05,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809188729] [2024-11-09 18:13:05,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809188729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:05,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222144844] [2024-11-09 18:13:05,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:13:05,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:05,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:05,486 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:05,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 18:13:05,636 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-09 18:13:05,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:05,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:13:05,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-09 18:13:05,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-09 18:13:05,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222144844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:05,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:05,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-09 18:13:05,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402876842] [2024-11-09 18:13:05,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:05,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:13:05,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:13:05,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:13:05,970 INFO L87 Difference]: Start difference. First operand 120 states and 126 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 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) [2024-11-09 18:13:06,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:06,095 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2024-11-09 18:13:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 18:13:06,096 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 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 85 [2024-11-09 18:13:06,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:06,096 INFO L225 Difference]: With dead ends: 127 [2024-11-09 18:13:06,097 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 18:13:06,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 147 SyntacticMatches, 14 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2024-11-09 18:13:06,100 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 79 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:06,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 172 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:13:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 18:13:06,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-09 18:13:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 states have internal predecessors, (96), 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) [2024-11-09 18:13:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2024-11-09 18:13:06,126 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 85 [2024-11-09 18:13:06,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:06,126 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2024-11-09 18:13:06,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 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) [2024-11-09 18:13:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2024-11-09 18:13:06,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-09 18:13:06,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:06,127 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:06,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 18:13:06,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:06,328 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:06,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash -444246542, now seen corresponding path program 18 times [2024-11-09 18:13:06,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:06,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703835248] [2024-11-09 18:13:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:06,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:10,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703835248] [2024-11-09 18:13:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703835248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105285816] [2024-11-09 18:13:10,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:13:10,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:10,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:10,837 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:10,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 18:13:10,947 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-09 18:13:10,947 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:10,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-09 18:13:10,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:11,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:12,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:12,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:12,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:12,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:12,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:12,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:12,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:12,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:12,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:12,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:12,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:13:12,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 72 treesize of output 135 [2024-11-09 18:13:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:12,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:13:14,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105285816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:14,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:14,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 31, 22] total 85 [2024-11-09 18:13:14,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436438580] [2024-11-09 18:13:14,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:14,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-09 18:13:14,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:14,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-09 18:13:14,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=6624, Unknown=0, NotChecked=0, Total=7140 [2024-11-09 18:13:14,825 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 85 states, 85 states have (on average 2.823529411764706) internal successors, (240), 85 states have internal predecessors, (240), 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) [2024-11-09 18:13:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:20,672 INFO L93 Difference]: Finished difference Result 313 states and 343 transitions. [2024-11-09 18:13:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-09 18:13:20,672 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.823529411764706) internal successors, (240), 85 states have internal predecessors, (240), 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 91 [2024-11-09 18:13:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:20,673 INFO L225 Difference]: With dead ends: 313 [2024-11-09 18:13:20,673 INFO L226 Difference]: Without dead ends: 305 [2024-11-09 18:13:20,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3955 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1717, Invalid=16105, Unknown=0, NotChecked=0, Total=17822 [2024-11-09 18:13:20,675 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 375 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 3158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:20,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 2160 Invalid, 3158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 2742 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 18:13:20,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-09 18:13:20,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 213. [2024-11-09 18:13:20,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.1037735849056605) internal successors, (234), 212 states have internal predecessors, (234), 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) [2024-11-09 18:13:20,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2024-11-09 18:13:20,725 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 91 [2024-11-09 18:13:20,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:20,725 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2024-11-09 18:13:20,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.823529411764706) internal successors, (240), 85 states have internal predecessors, (240), 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) [2024-11-09 18:13:20,725 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2024-11-09 18:13:20,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 18:13:20,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:20,726 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:20,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 18:13:20,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:20,927 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:20,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash -835632144, now seen corresponding path program 19 times [2024-11-09 18:13:20,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:20,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747119754] [2024-11-09 18:13:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 18:13:21,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:21,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747119754] [2024-11-09 18:13:21,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747119754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:21,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94678088] [2024-11-09 18:13:21,156 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:13:21,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:21,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:21,158 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:21,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 18:13:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:21,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 18:13:21,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 18:13:21,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 18:13:21,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94678088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:21,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:21,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-09 18:13:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146817971] [2024-11-09 18:13:21,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:21,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 18:13:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 18:13:21,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:13:21,574 INFO L87 Difference]: Start difference. First operand 213 states and 234 transitions. Second operand has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 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) [2024-11-09 18:13:21,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:21,773 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-11-09 18:13:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 18:13:21,773 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 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 95 [2024-11-09 18:13:21,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:21,774 INFO L225 Difference]: With dead ends: 357 [2024-11-09 18:13:21,775 INFO L226 Difference]: Without dead ends: 279 [2024-11-09 18:13:21,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 164 SyntacticMatches, 16 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2024-11-09 18:13:21,775 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 95 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:21,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 249 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:13:21,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-09 18:13:21,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 255. [2024-11-09 18:13:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.0984251968503937) internal successors, (279), 254 states have internal predecessors, (279), 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) [2024-11-09 18:13:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 279 transitions. [2024-11-09 18:13:21,831 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 279 transitions. Word has length 95 [2024-11-09 18:13:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:21,831 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 279 transitions. [2024-11-09 18:13:21,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 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) [2024-11-09 18:13:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 279 transitions. [2024-11-09 18:13:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 18:13:21,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:21,832 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:21,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 18:13:22,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:22,033 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:22,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash -975746797, now seen corresponding path program 20 times [2024-11-09 18:13:22,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:22,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939800677] [2024-11-09 18:13:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:22,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 58 proven. 70 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-09 18:13:22,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:22,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939800677] [2024-11-09 18:13:22,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939800677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:22,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289564399] [2024-11-09 18:13:22,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:13:22,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:22,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:22,260 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:22,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 18:13:22,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:13:22,348 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:22,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 18:13:22,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 88 proven. 56 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-09 18:13:22,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 88 proven. 56 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-09 18:13:22,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289564399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:22,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:22,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-09 18:13:22,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851091939] [2024-11-09 18:13:22,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:22,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 18:13:22,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:22,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 18:13:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:13:22,725 INFO L87 Difference]: Start difference. First operand 255 states and 279 transitions. Second operand has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 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) [2024-11-09 18:13:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:22,948 INFO L93 Difference]: Finished difference Result 330 states and 356 transitions. [2024-11-09 18:13:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 18:13:22,949 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 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 97 [2024-11-09 18:13:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:22,949 INFO L225 Difference]: With dead ends: 330 [2024-11-09 18:13:22,949 INFO L226 Difference]: Without dead ends: 102 [2024-11-09 18:13:22,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 169 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:13:22,950 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 44 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:22,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 361 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:13:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-09 18:13:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-09 18:13:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 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) [2024-11-09 18:13:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2024-11-09 18:13:22,976 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 97 [2024-11-09 18:13:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:22,976 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2024-11-09 18:13:22,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 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) [2024-11-09 18:13:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2024-11-09 18:13:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 18:13:22,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:22,977 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:22,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 18:13:23,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 18:13:23,177 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:23,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1312677905, now seen corresponding path program 21 times [2024-11-09 18:13:23,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:23,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815135951] [2024-11-09 18:13:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 20 proven. 340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:27,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:27,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815135951] [2024-11-09 18:13:27,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815135951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:27,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600063834] [2024-11-09 18:13:27,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:13:27,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:27,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:27,490 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:27,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 18:13:27,617 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-09 18:13:27,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:27,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 157 conjuncts are in the unsatisfiable core [2024-11-09 18:13:27,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:27,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 18:13:27,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 18:13:27,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1