./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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_sum1.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 8d05359bf1cd6e974dc237604ab15e53b702ce490bf8880eb5ddff78fcd04ff1 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:01:33,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:01:33,396 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:01:33,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:01:33,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:01:33,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:01:33,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:01:33,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:01:33,428 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:01:33,430 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:01:33,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:01:33,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:01:33,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:01:33,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:01:33,433 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:01:33,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:01:33,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:01:33,433 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:01:33,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:01:33,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:01:33,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:01:33,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:01:33,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:01:33,436 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:01:33,437 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:01:33,437 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:01:33,437 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:01:33,437 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:01:33,437 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:01:33,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:01:33,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:01:33,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:01:33,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:01:33,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:01:33,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:01:33,439 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:01:33,439 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:01:33,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:01:33,439 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:01:33,440 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:01:33,440 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:01:33,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:01:33,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d05359bf1cd6e974dc237604ab15e53b702ce490bf8880eb5ddff78fcd04ff1 [2024-11-08 10:01:33,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:01:33,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:01:33,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:01:33,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:01:33,678 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:01:33,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum1.c [2024-11-08 10:01:34,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:01:35,125 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:01:35,126 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum1.c [2024-11-08 10:01:35,134 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fa146f9/68f12d5fe6d840e1829bdf6f143c547e/FLAGf6229230f [2024-11-08 10:01:35,534 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fa146f9/68f12d5fe6d840e1829bdf6f143c547e [2024-11-08 10:01:35,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:01:35,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:01:35,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:01:35,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:01:35,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:01:35,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7fc620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35, skipping insertion in model container [2024-11-08 10:01:35,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,571 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:01:35,764 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_sum1.c[400,413] [2024-11-08 10:01:35,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:01:35,793 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:01:35,802 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_sum1.c[400,413] [2024-11-08 10:01:35,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:01:35,830 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:01:35,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35 WrapperNode [2024-11-08 10:01:35,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:01:35,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:01:35,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:01:35,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:01:35,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,854 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-08 10:01:35,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:01:35,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:01:35,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:01:35,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:01:35,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,873 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 10:01:35,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,882 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:01:35,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:01:35,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:01:35,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:01:35,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (1/1) ... [2024-11-08 10:01:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:01:35,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:35,916 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) [2024-11-08 10:01:35,925 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 [2024-11-08 10:01:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:01:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:01:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:01:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 10:01:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:01:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:01:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:01:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:01:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:01:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:01:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 10:01:36,052 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:01:36,057 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:01:36,199 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-08 10:01:36,199 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:01:36,209 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:01:36,209 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 10:01:36,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:01:36 BoogieIcfgContainer [2024-11-08 10:01:36,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:01:36,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:01:36,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:01:36,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:01:36,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:01:35" (1/3) ... [2024-11-08 10:01:36,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7105804e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:01:36, skipping insertion in model container [2024-11-08 10:01:36,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:35" (2/3) ... [2024-11-08 10:01:36,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7105804e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:01:36, skipping insertion in model container [2024-11-08 10:01:36,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:01:36" (3/3) ... [2024-11-08 10:01:36,221 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum1.c [2024-11-08 10:01:36,235 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:01:36,235 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:01:36,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:01:36,287 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;@33cac8cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:01:36,288 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:01:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 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) [2024-11-08 10:01:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 10:01:36,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:36,296 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:36,297 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:36,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash -718163050, now seen corresponding path program 1 times [2024-11-08 10:01:36,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:36,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923424530] [2024-11-08 10:01:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:36,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:01:36,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:36,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923424530] [2024-11-08 10:01:36,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923424530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:01:36,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:01:36,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:01:36,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411778016] [2024-11-08 10:01:36,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:01:36,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 10:01:36,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 10:01:36,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:01:36,506 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-08 10:01:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:36,520 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-08 10:01:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 10:01:36,522 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2024-11-08 10:01:36,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:36,527 INFO L225 Difference]: With dead ends: 35 [2024-11-08 10:01:36,528 INFO L226 Difference]: Without dead ends: 15 [2024-11-08 10:01:36,530 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 [2024-11-08 10:01:36,533 INFO L432 NwaCegarLoop]: 23 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, 23 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 [2024-11-08 10:01:36,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:36,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-08 10:01:36,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-08 10:01:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:01:36,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-08 10:01:36,560 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-08 10:01:36,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:36,560 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-08 10:01:36,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-08 10:01:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-08 10:01:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 10:01:36,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:36,561 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:36,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:01:36,562 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:36,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:36,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1709876828, now seen corresponding path program 1 times [2024-11-08 10:01:36,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:36,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971604624] [2024-11-08 10:01:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:36,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:36,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:01:36,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:36,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971604624] [2024-11-08 10:01:36,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971604624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:01:36,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:01:36,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:01:36,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065968696] [2024-11-08 10:01:36,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:01:36,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:01:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:01:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:01:36,672 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-08 10:01:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:36,708 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-11-08 10:01:36,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:01:36,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2024-11-08 10:01:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:36,710 INFO L225 Difference]: With dead ends: 27 [2024-11-08 10:01:36,710 INFO L226 Difference]: Without dead ends: 17 [2024-11-08 10:01:36,711 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 [2024-11-08 10:01:36,712 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:36,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-08 10:01:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-11-08 10:01:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2024-11-08 10:01:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-08 10:01:36,719 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2024-11-08 10:01:36,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:36,720 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-08 10:01:36,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-08 10:01:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-08 10:01:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 10:01:36,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:36,721 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:36,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:01:36,721 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:36,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:36,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2117745282, now seen corresponding path program 1 times [2024-11-08 10:01:36,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:36,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372727162] [2024-11-08 10:01:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:36,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 10:01:36,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:36,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372727162] [2024-11-08 10:01:36,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372727162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:01:36,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:01:36,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:01:36,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621317112] [2024-11-08 10:01:36,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:01:36,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:01:36,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:36,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:01:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:01:36,832 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:01:36,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:36,870 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-11-08 10:01:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:01:36,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-08 10:01:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:36,873 INFO L225 Difference]: With dead ends: 27 [2024-11-08 10:01:36,873 INFO L226 Difference]: Without dead ends: 20 [2024-11-08 10:01:36,873 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 [2024-11-08 10:01:36,875 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:36,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 13 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:36,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-08 10:01:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-08 10:01:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2024-11-08 10:01:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-08 10:01:36,887 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2024-11-08 10:01:36,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:36,887 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-08 10:01:36,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:01:36,888 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-08 10:01:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 10:01:36,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:36,889 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:36,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 10:01:36,889 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:36,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash -350467326, now seen corresponding path program 1 times [2024-11-08 10:01:36,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:36,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044182640] [2024-11-08 10:01:36,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:36,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 10:01:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:36,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044182640] [2024-11-08 10:01:36,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044182640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:36,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259442308] [2024-11-08 10:01:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:36,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:36,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:37,000 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) [2024-11-08 10:01:37,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:01:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:37,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:01:37,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 10:01:37,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 10:01:37,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259442308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:37,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:37,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 10:01:37,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505986436] [2024-11-08 10:01:37,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:37,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 10:01:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:37,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 10:01:37,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-08 10:01:37,205 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:01:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:37,232 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-08 10:01:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 10:01:37,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 10:01:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:37,233 INFO L225 Difference]: With dead ends: 33 [2024-11-08 10:01:37,233 INFO L226 Difference]: Without dead ends: 21 [2024-11-08 10:01:37,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-08 10:01:37,234 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:37,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:37,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-08 10:01:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-08 10:01:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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) [2024-11-08 10:01:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-08 10:01:37,237 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2024-11-08 10:01:37,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:37,237 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-08 10:01:37,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:01:37,238 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-08 10:01:37,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 10:01:37,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:37,238 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:37,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 10:01:37,442 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 [2024-11-08 10:01:37,443 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:37,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1584924836, now seen corresponding path program 2 times [2024-11-08 10:01:37,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:37,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182863433] [2024-11-08 10:01:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:37,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 10:01:37,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182863433] [2024-11-08 10:01:37,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182863433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691182964] [2024-11-08 10:01:37,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:01:37,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:37,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:37,512 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) [2024-11-08 10:01:37,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:01:37,557 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:01:37,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:37,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:01:37,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 10:01:37,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:37,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 10:01:37,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691182964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:37,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:37,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 10:01:37,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351874915] [2024-11-08 10:01:37,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:37,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 10:01:37,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:37,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 10:01:37,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-08 10:01:37,616 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:01:37,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:37,653 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-11-08 10:01:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 10:01:37,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 10:01:37,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:37,654 INFO L225 Difference]: With dead ends: 34 [2024-11-08 10:01:37,654 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 10:01:37,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:01:37,656 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:37,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 10:01:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-08 10:01:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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) [2024-11-08 10:01:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-08 10:01:37,659 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2024-11-08 10:01:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:37,659 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-08 10:01:37,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:01:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-08 10:01:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 10:01:37,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:37,661 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:37,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 10:01:37,863 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 [2024-11-08 10:01:37,863 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:37,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1965660968, now seen corresponding path program 3 times [2024-11-08 10:01:37,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:37,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839528974] [2024-11-08 10:01:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:01:38,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839528974] [2024-11-08 10:01:38,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839528974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655052315] [2024-11-08 10:01:38,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:01:38,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:38,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:38,721 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) [2024-11-08 10:01:38,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:01:38,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 10:01:38,774 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:38,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 10:01:38,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:01:38,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:39,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:01:39,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-08 10:01:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:01:39,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655052315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:39,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:39,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 23 [2024-11-08 10:01:39,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320184165] [2024-11-08 10:01:39,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:39,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 10:01:39,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:39,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 10:01:39,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:01:39,116 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 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) [2024-11-08 10:01:39,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:39,234 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2024-11-08 10:01:39,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 10:01:39,234 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 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 [2024-11-08 10:01:39,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:39,235 INFO L225 Difference]: With dead ends: 37 [2024-11-08 10:01:39,235 INFO L226 Difference]: Without dead ends: 33 [2024-11-08 10:01:39,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:01:39,236 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:39,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 86 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:39,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-08 10:01:39,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2024-11-08 10:01:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 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) [2024-11-08 10:01:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-08 10:01:39,240 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 23 [2024-11-08 10:01:39,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:39,240 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-08 10:01:39,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 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) [2024-11-08 10:01:39,240 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-08 10:01:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 10:01:39,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:39,244 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:39,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 10:01:39,445 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 [2024-11-08 10:01:39,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:39,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -732186678, now seen corresponding path program 4 times [2024-11-08 10:01:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:39,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732026748] [2024-11-08 10:01:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:01:39,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:39,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732026748] [2024-11-08 10:01:39,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732026748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:39,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025550319] [2024-11-08 10:01:39,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:01:39,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:39,546 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) [2024-11-08 10:01:39,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:01:39,582 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:01:39,582 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:39,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:01:39,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:01:39,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:01:39,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025550319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:39,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:39,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-08 10:01:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719887658] [2024-11-08 10:01:39,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:39,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 10:01:39,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:39,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 10:01:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-08 10:01:39,697 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:01:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:39,782 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2024-11-08 10:01:39,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 10:01:39,783 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-08 10:01:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:39,783 INFO L225 Difference]: With dead ends: 61 [2024-11-08 10:01:39,783 INFO L226 Difference]: Without dead ends: 37 [2024-11-08 10:01:39,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-08 10:01:39,784 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:39,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 29 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:39,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-08 10:01:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2024-11-08 10:01:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 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) [2024-11-08 10:01:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-08 10:01:39,790 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 25 [2024-11-08 10:01:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:39,791 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-08 10:01:39,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:01:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2024-11-08 10:01:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 10:01:39,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:39,791 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:39,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 10:01:39,992 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 [2024-11-08 10:01:39,992 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:39,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1031419092, now seen corresponding path program 5 times [2024-11-08 10:01:39,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:39,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890113146] [2024-11-08 10:01:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:39,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:01:40,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:40,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890113146] [2024-11-08 10:01:40,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890113146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:40,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904510660] [2024-11-08 10:01:40,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:01:40,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:40,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:40,137 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) [2024-11-08 10:01:40,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:01:40,198 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 10:01:40,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:40,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:01:40,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:01:40,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:01:40,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904510660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:40,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:40,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-08 10:01:40,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464888891] [2024-11-08 10:01:40,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:40,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:01:40,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:40,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:01:40,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:01:40,377 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2024-11-08 10:01:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:40,507 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-11-08 10:01:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 10:01:40,507 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 27 [2024-11-08 10:01:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:40,508 INFO L225 Difference]: With dead ends: 36 [2024-11-08 10:01:40,508 INFO L226 Difference]: Without dead ends: 32 [2024-11-08 10:01:40,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-08 10:01:40,509 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:40,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 19 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:40,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-08 10:01:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-08 10:01:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 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) [2024-11-08 10:01:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-08 10:01:40,515 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 27 [2024-11-08 10:01:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:40,516 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-08 10:01:40,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2024-11-08 10:01:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-08 10:01:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 10:01:40,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:40,517 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:40,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 10:01:40,717 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 [2024-11-08 10:01:40,718 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:40,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash 996931278, now seen corresponding path program 6 times [2024-11-08 10:01:40,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:40,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100397744] [2024-11-08 10:01:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:40,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:01:41,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:41,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100397744] [2024-11-08 10:01:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100397744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:41,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440612925] [2024-11-08 10:01:41,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:01:41,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:41,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:41,450 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) [2024-11-08 10:01:41,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:01:41,494 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 10:01:41,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:41,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 10:01:41,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:41,523 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 [2024-11-08 10:01:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:01:41,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:01:42,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440612925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:42,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:42,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 15] total 43 [2024-11-08 10:01:42,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029056978] [2024-11-08 10:01:42,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:42,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 10:01:42,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:42,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 10:01:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1663, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 10:01:42,146 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 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) [2024-11-08 10:01:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:42,724 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2024-11-08 10:01:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 10:01:42,724 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 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 29 [2024-11-08 10:01:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:42,725 INFO L225 Difference]: With dead ends: 47 [2024-11-08 10:01:42,725 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 10:01:42,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=218, Invalid=2434, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 10:01:42,726 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:42,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 104 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 10:01:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 10:01:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-11-08 10:01:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 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) [2024-11-08 10:01:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-08 10:01:42,730 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 29 [2024-11-08 10:01:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:42,730 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-08 10:01:42,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 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) [2024-11-08 10:01:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-08 10:01:42,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 10:01:42,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:42,731 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:42,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 10:01:42,935 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 [2024-11-08 10:01:42,936 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:42,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:42,937 INFO L85 PathProgramCache]: Analyzing trace with hash 326484464, now seen corresponding path program 7 times [2024-11-08 10:01:42,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:42,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592824990] [2024-11-08 10:01:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:42,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:01:43,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:43,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592824990] [2024-11-08 10:01:43,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592824990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:43,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209204225] [2024-11-08 10:01:43,018 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:01:43,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:43,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:43,020 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) [2024-11-08 10:01:43,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:01:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:43,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 10:01:43,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:01:43,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:01:43,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209204225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:43,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:43,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-08 10:01:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806460984] [2024-11-08 10:01:43,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:43,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 10:01:43,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:43,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 10:01:43,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-08 10:01:43,201 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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) [2024-11-08 10:01:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:43,290 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2024-11-08 10:01:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 10:01:43,291 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 31 [2024-11-08 10:01:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:43,291 INFO L225 Difference]: With dead ends: 68 [2024-11-08 10:01:43,291 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 10:01:43,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-08 10:01:43,292 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:43,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 10:01:43,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2024-11-08 10:01:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 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) [2024-11-08 10:01:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-11-08 10:01:43,296 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 31 [2024-11-08 10:01:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:43,296 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-11-08 10:01:43,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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) [2024-11-08 10:01:43,296 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-11-08 10:01:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 10:01:43,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:43,297 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:43,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 10:01:43,501 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 [2024-11-08 10:01:43,502 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:43,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash -438567918, now seen corresponding path program 8 times [2024-11-08 10:01:43,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:43,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799774204] [2024-11-08 10:01:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:43,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:01:43,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:43,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799774204] [2024-11-08 10:01:43,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799774204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:43,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690760508] [2024-11-08 10:01:43,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:01:43,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:43,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:43,598 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) [2024-11-08 10:01:43,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:01:43,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:01:43,645 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:43,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 10:01:43,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:01:43,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:01:43,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690760508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:43,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:43,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-08 10:01:43,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246445303] [2024-11-08 10:01:43,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:43,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 10:01:43,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:43,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 10:01:43,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 10:01:43,763 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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) [2024-11-08 10:01:43,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:43,835 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-11-08 10:01:43,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 10:01:43,835 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 [2024-11-08 10:01:43,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:43,835 INFO L225 Difference]: With dead ends: 52 [2024-11-08 10:01:43,836 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 10:01:43,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-08 10:01:43,836 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:43,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 25 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 10:01:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-08 10:01:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 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) [2024-11-08 10:01:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-08 10:01:43,840 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 33 [2024-11-08 10:01:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:43,840 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-08 10:01:43,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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) [2024-11-08 10:01:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-08 10:01:43,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 10:01:43,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:43,841 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:43,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 10:01:44,041 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 [2024-11-08 10:01:44,041 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:44,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash -827015692, now seen corresponding path program 9 times [2024-11-08 10:01:44,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:44,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623700837] [2024-11-08 10:01:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:44,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:01:44,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623700837] [2024-11-08 10:01:44,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623700837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124044436] [2024-11-08 10:01:44,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:01:44,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:44,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:44,986 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) [2024-11-08 10:01:44,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 10:01:45,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-08 10:01:45,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:45,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 10:01:45,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:45,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:01:45,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:01:45,700 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 30 treesize of output 33 [2024-11-08 10:01:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:01:45,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:46,769 INFO L349 Elim1Store]: treesize reduction 104, result has 44.4 percent of original size [2024-11-08 10:01:46,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 75 treesize of output 95 [2024-11-08 10:01:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:01:47,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124044436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:47,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:47,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 25] total 70 [2024-11-08 10:01:47,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997522288] [2024-11-08 10:01:47,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:47,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-08 10:01:47,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-08 10:01:47,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=4406, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 10:01:47,028 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 70 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 70 states have internal predecessors, (89), 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) [2024-11-08 10:01:48,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:48,783 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2024-11-08 10:01:48,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 10:01:48,783 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 70 states have internal predecessors, (89), 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 35 [2024-11-08 10:01:48,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:48,784 INFO L225 Difference]: With dead ends: 64 [2024-11-08 10:01:48,784 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 10:01:48,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2398 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=904, Invalid=8798, Unknown=0, NotChecked=0, Total=9702 [2024-11-08 10:01:48,786 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:48,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 102 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:01:48,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 10:01:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 41. [2024-11-08 10:01:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 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) [2024-11-08 10:01:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-11-08 10:01:48,791 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 35 [2024-11-08 10:01:48,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:48,791 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-11-08 10:01:48,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 70 states have internal predecessors, (89), 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) [2024-11-08 10:01:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-11-08 10:01:48,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 10:01:48,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:48,792 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:48,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 10:01:48,993 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 [2024-11-08 10:01:48,993 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:48,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:48,993 INFO L85 PathProgramCache]: Analyzing trace with hash -139896938, now seen corresponding path program 10 times [2024-11-08 10:01:48,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:48,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036677825] [2024-11-08 10:01:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:48,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:01:49,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036677825] [2024-11-08 10:01:49,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036677825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750148613] [2024-11-08 10:01:49,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:01:49,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:49,097 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) [2024-11-08 10:01:49,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 10:01:49,141 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:01:49,141 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:49,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 10:01:49,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:01:49,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:01:49,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750148613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:49,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:49,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-08 10:01:49,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750788342] [2024-11-08 10:01:49,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:49,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 10:01:49,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:49,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 10:01:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-08 10:01:49,349 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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) [2024-11-08 10:01:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:49,494 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2024-11-08 10:01:49,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 10:01:49,495 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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 37 [2024-11-08 10:01:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:49,496 INFO L225 Difference]: With dead ends: 85 [2024-11-08 10:01:49,496 INFO L226 Difference]: Without dead ends: 49 [2024-11-08 10:01:49,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2024-11-08 10:01:49,497 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:49,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 48 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:49,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-08 10:01:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2024-11-08 10:01:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:01:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-11-08 10:01:49,503 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 37 [2024-11-08 10:01:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:49,503 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-11-08 10:01:49,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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) [2024-11-08 10:01:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-11-08 10:01:49,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 10:01:49,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:49,504 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:49,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 10:01:49,705 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 [2024-11-08 10:01:49,705 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:49,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash 38479864, now seen corresponding path program 11 times [2024-11-08 10:01:49,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:49,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288215220] [2024-11-08 10:01:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:49,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 10:01:49,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:49,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288215220] [2024-11-08 10:01:49,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288215220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:49,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24122958] [2024-11-08 10:01:49,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:01:49,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:49,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:49,832 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) [2024-11-08 10:01:49,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 10:01:49,904 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 10:01:49,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:49,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 10:01:49,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 10:01:50,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 10:01:50,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24122958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:50,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:50,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-08 10:01:50,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338765628] [2024-11-08 10:01:50,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:50,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 10:01:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:50,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 10:01:50,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-08 10:01:50,139 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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) [2024-11-08 10:01:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:50,310 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2024-11-08 10:01:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 10:01:50,311 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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 39 [2024-11-08 10:01:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:50,311 INFO L225 Difference]: With dead ends: 48 [2024-11-08 10:01:50,311 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 10:01:50,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 57 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2024-11-08 10:01:50,312 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:50,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 44 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 10:01:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-08 10:01:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 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) [2024-11-08 10:01:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-08 10:01:50,317 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 39 [2024-11-08 10:01:50,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:50,317 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-08 10:01:50,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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) [2024-11-08 10:01:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-08 10:01:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 10:01:50,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:50,318 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:50,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 10:01:50,518 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 [2024-11-08 10:01:50,519 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:50,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:50,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1622323046, now seen corresponding path program 12 times [2024-11-08 10:01:50,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:50,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069318459] [2024-11-08 10:01:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:50,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:01:51,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:51,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069318459] [2024-11-08 10:01:51,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069318459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:51,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516081315] [2024-11-08 10:01:51,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:01:51,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:51,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:51,735 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) [2024-11-08 10:01:51,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 10:01:51,790 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 10:01:51,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:51,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-08 10:01:51,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:51,850 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 [2024-11-08 10:01:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:01:52,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 16 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:01:53,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516081315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:53,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:53,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 78 [2024-11-08 10:01:53,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836725669] [2024-11-08 10:01:53,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:53,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-08 10:01:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:53,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-08 10:01:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=5509, Unknown=0, NotChecked=0, Total=6006 [2024-11-08 10:01:53,840 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 78 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 78 states have internal predecessors, (99), 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) [2024-11-08 10:01:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:54,743 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2024-11-08 10:01:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 10:01:54,743 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 78 states have internal predecessors, (99), 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 [2024-11-08 10:01:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:54,744 INFO L225 Difference]: With dead ends: 63 [2024-11-08 10:01:54,744 INFO L226 Difference]: Without dead ends: 59 [2024-11-08 10:01:54,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2272 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=551, Invalid=6421, Unknown=0, NotChecked=0, Total=6972 [2024-11-08 10:01:54,745 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:54,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:01:54,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-08 10:01:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2024-11-08 10:01:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 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) [2024-11-08 10:01:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2024-11-08 10:01:54,755 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 41 [2024-11-08 10:01:54,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:54,756 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2024-11-08 10:01:54,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 78 states have internal predecessors, (99), 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) [2024-11-08 10:01:54,756 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2024-11-08 10:01:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 10:01:54,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:54,757 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:54,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 10:01:54,961 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 [2024-11-08 10:01:54,962 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:54,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash 73914556, now seen corresponding path program 13 times [2024-11-08 10:01:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:54,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297269322] [2024-11-08 10:01:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:54,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 10:01:55,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297269322] [2024-11-08 10:01:55,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297269322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:55,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526969949] [2024-11-08 10:01:55,095 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:01:55,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:55,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:55,096 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) [2024-11-08 10:01:55,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 10:01:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:55,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 10:01:55,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 10:01:55,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 10:01:55,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526969949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:55,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:55,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-08 10:01:55,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50550724] [2024-11-08 10:01:55,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:55,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 10:01:55,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:55,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 10:01:55,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:01:55,402 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 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) [2024-11-08 10:01:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:55,508 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2024-11-08 10:01:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 10:01:55,509 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 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 43 [2024-11-08 10:01:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:55,509 INFO L225 Difference]: With dead ends: 92 [2024-11-08 10:01:55,509 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 10:01:55,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:01:55,510 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:55,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 40 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:55,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 10:01:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-11-08 10:01:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 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) [2024-11-08 10:01:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2024-11-08 10:01:55,534 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 43 [2024-11-08 10:01:55,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:55,534 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2024-11-08 10:01:55,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 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) [2024-11-08 10:01:55,534 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2024-11-08 10:01:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 10:01:55,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:55,535 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:55,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 10:01:55,735 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 [2024-11-08 10:01:55,735 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:55,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -894570530, now seen corresponding path program 14 times [2024-11-08 10:01:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271700508] [2024-11-08 10:01:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 10:01:55,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271700508] [2024-11-08 10:01:55,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271700508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66925580] [2024-11-08 10:01:55,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:01:55,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:55,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:55,905 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) [2024-11-08 10:01:55,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 10:01:55,968 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:01:55,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:55,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 10:01:55,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 10:01:56,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 10:01:56,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66925580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:56,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-08 10:01:56,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977790369] [2024-11-08 10:01:56,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:56,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 10:01:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 10:01:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:01:56,146 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 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) [2024-11-08 10:01:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:56,282 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2024-11-08 10:01:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 10:01:56,282 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 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 45 [2024-11-08 10:01:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:56,282 INFO L225 Difference]: With dead ends: 68 [2024-11-08 10:01:56,283 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 10:01:56,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-11-08 10:01:56,283 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:56,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 40 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 10:01:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-08 10:01:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 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) [2024-11-08 10:01:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-11-08 10:01:56,289 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 45 [2024-11-08 10:01:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:56,289 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-11-08 10:01:56,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 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) [2024-11-08 10:01:56,289 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-11-08 10:01:56,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 10:01:56,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:56,290 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:56,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 10:01:56,490 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 [2024-11-08 10:01:56,491 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:56,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash 49745600, now seen corresponding path program 15 times [2024-11-08 10:01:56,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:56,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198218033] [2024-11-08 10:01:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:01:57,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:57,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198218033] [2024-11-08 10:01:57,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198218033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:57,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099052158] [2024-11-08 10:01:57,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:01:57,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:57,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:57,909 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) [2024-11-08 10:01:57,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 10:01:57,993 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 10:01:57,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:57,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-08 10:01:57,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:58,054 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 [2024-11-08 10:01:59,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:01:59,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:01:59,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:01:59,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:01:59,600 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 [2024-11-08 10:01:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 11 proven. 72 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 10:01:59,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 10:02:02,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099052158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:02,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:02,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 33, 34] total 97 [2024-11-08 10:02:02,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450635591] [2024-11-08 10:02:02,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:02,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-08 10:02:02,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:02,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-08 10:02:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=689, Invalid=8623, Unknown=0, NotChecked=0, Total=9312 [2024-11-08 10:02:02,286 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 97 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 97 states have internal predecessors, (118), 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) [2024-11-08 10:02:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:02:06,818 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2024-11-08 10:02:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-08 10:02:06,818 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 97 states have internal predecessors, (118), 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 47 [2024-11-08 10:02:06,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:02:06,819 INFO L225 Difference]: With dead ends: 80 [2024-11-08 10:02:06,819 INFO L226 Difference]: Without dead ends: 76 [2024-11-08 10:02:06,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4312 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1625, Invalid=20427, Unknown=0, NotChecked=0, Total=22052 [2024-11-08 10:02:06,822 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:02:06,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 118 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 10:02:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-08 10:02:06,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2024-11-08 10:02:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 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) [2024-11-08 10:02:06,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2024-11-08 10:02:06,833 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 47 [2024-11-08 10:02:06,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:02:06,833 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2024-11-08 10:02:06,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 97 states have internal predecessors, (118), 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) [2024-11-08 10:02:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2024-11-08 10:02:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 10:02:06,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:02:06,834 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:02:06,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 10:02:07,034 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 [2024-11-08 10:02:07,035 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:02:07,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:02:07,035 INFO L85 PathProgramCache]: Analyzing trace with hash 614114658, now seen corresponding path program 16 times [2024-11-08 10:02:07,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:02:07,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761761439] [2024-11-08 10:02:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:02:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:02:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 10:02:07,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:07,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761761439] [2024-11-08 10:02:07,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761761439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:07,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676048214] [2024-11-08 10:02:07,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:02:07,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:07,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:07,283 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) [2024-11-08 10:02:07,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 10:02:07,341 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:02:07,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:02:07,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 10:02:07,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:02:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 10:02:07,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 10:02:07,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676048214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:07,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:07,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-08 10:02:07,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625496777] [2024-11-08 10:02:07,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:07,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 10:02:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:07,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 10:02:07,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2024-11-08 10:02:07,710 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 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) [2024-11-08 10:02:07,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:02:07,924 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2024-11-08 10:02:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 10:02:07,924 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 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 49 [2024-11-08 10:02:07,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:02:07,925 INFO L225 Difference]: With dead ends: 109 [2024-11-08 10:02:07,925 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 10:02:07,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 70 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=1123, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 10:02:07,926 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 55 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:02:07,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 41 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:02:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 10:02:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2024-11-08 10:02:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 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) [2024-11-08 10:02:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2024-11-08 10:02:07,933 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 49 [2024-11-08 10:02:07,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:02:07,934 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2024-11-08 10:02:07,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 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) [2024-11-08 10:02:07,934 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2024-11-08 10:02:07,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 10:02:07,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:02:07,934 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:02:07,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 10:02:08,135 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 [2024-11-08 10:02:08,135 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:02:08,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:02:08,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2099294916, now seen corresponding path program 17 times [2024-11-08 10:02:08,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:02:08,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90068020] [2024-11-08 10:02:08,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:02:08,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:02:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 10:02:08,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:08,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90068020] [2024-11-08 10:02:08,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90068020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:08,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735950965] [2024-11-08 10:02:08,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:02:08,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:08,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:08,293 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) [2024-11-08 10:02:08,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 10:02:08,416 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-08 10:02:08,416 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:02:08,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 10:02:08,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:02:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 10:02:08,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 10:02:08,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735950965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:08,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:08,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-08 10:02:08,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060569349] [2024-11-08 10:02:08,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:08,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 10:02:08,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 10:02:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2024-11-08 10:02:08,755 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 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) [2024-11-08 10:02:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:02:08,996 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2024-11-08 10:02:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 10:02:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 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 [2024-11-08 10:02:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:02:08,997 INFO L225 Difference]: With dead ends: 60 [2024-11-08 10:02:08,997 INFO L226 Difference]: Without dead ends: 56 [2024-11-08 10:02:08,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 73 SyntacticMatches, 14 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=310, Invalid=1330, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 10:02:08,998 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:02:08,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 55 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:02:08,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-08 10:02:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-08 10:02:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 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) [2024-11-08 10:02:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-08 10:02:09,007 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 51 [2024-11-08 10:02:09,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:02:09,007 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-08 10:02:09,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 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) [2024-11-08 10:02:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-08 10:02:09,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 10:02:09,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:02:09,008 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:02:09,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 10:02:09,208 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 [2024-11-08 10:02:09,209 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:02:09,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:02:09,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1158981530, now seen corresponding path program 18 times [2024-11-08 10:02:09,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:02:09,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857746560] [2024-11-08 10:02:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:02:09,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:02:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:02:10,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:10,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857746560] [2024-11-08 10:02:10,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857746560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:10,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036135788] [2024-11-08 10:02:10,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:02:10,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:10,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:10,911 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) [2024-11-08 10:02:10,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 10:02:10,991 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-08 10:02:10,991 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:02:10,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-08 10:02:10,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:02:12,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:02:12,605 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 15 treesize of output 14 [2024-11-08 10:02:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:02:12,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:15,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:02:15,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 103 treesize of output 335 [2024-11-08 10:02:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 10:02:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036135788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:17,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 43, 35] total 106 [2024-11-08 10:02:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801491242] [2024-11-08 10:02:17,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:17,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-08 10:02:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-08 10:02:17,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=829, Invalid=10301, Unknown=0, NotChecked=0, Total=11130 [2024-11-08 10:02:17,009 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 106 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 106 states have internal predecessors, (129), 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) [2024-11-08 10:02:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:02:21,435 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2024-11-08 10:02:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-08 10:02:21,435 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 106 states have internal predecessors, (129), 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 [2024-11-08 10:02:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:02:21,436 INFO L225 Difference]: With dead ends: 115 [2024-11-08 10:02:21,436 INFO L226 Difference]: Without dead ends: 110 [2024-11-08 10:02:21,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5666 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1492, Invalid=19388, Unknown=0, NotChecked=0, Total=20880 [2024-11-08 10:02:21,438 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 3240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 10:02:21,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 171 Invalid, 3240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3203 Invalid, 1 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 10:02:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-08 10:02:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 59. [2024-11-08 10:02:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 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) [2024-11-08 10:02:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-11-08 10:02:21,450 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 53 [2024-11-08 10:02:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:02:21,450 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-11-08 10:02:21,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 106 states have internal predecessors, (129), 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) [2024-11-08 10:02:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-11-08 10:02:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 10:02:21,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:02:21,451 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:02:21,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 10:02:21,652 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 [2024-11-08 10:02:21,652 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:02:21,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:02:21,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1331487352, now seen corresponding path program 19 times [2024-11-08 10:02:21,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:02:21,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653421482] [2024-11-08 10:02:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:02:21,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:02:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 10:02:21,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:21,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653421482] [2024-11-08 10:02:21,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653421482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:21,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652925760] [2024-11-08 10:02:21,840 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:02:21,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:21,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:21,842 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) [2024-11-08 10:02:21,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 10:02:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:21,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 10:02:21,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:02:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 10:02:22,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 10:02:22,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652925760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:22,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:22,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-08 10:02:22,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930425573] [2024-11-08 10:02:22,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:22,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 10:02:22,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:22,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 10:02:22,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-08 10:02:22,230 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 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) [2024-11-08 10:02:22,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:02:22,370 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2024-11-08 10:02:22,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 10:02:22,371 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 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 55 [2024-11-08 10:02:22,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:02:22,371 INFO L225 Difference]: With dead ends: 116 [2024-11-08 10:02:22,371 INFO L226 Difference]: Without dead ends: 62 [2024-11-08 10:02:22,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-08 10:02:22,372 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:02:22,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 34 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:02:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-08 10:02:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-11-08 10:02:22,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 states have internal predecessors, (64), 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) [2024-11-08 10:02:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2024-11-08 10:02:22,384 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 55 [2024-11-08 10:02:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:02:22,384 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2024-11-08 10:02:22,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 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) [2024-11-08 10:02:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2024-11-08 10:02:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 10:02:22,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:02:22,384 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:02:22,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 10:02:22,588 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 [2024-11-08 10:02:22,588 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:02:22,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:02:22,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1327132246, now seen corresponding path program 20 times [2024-11-08 10:02:22,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:02:22,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738375743] [2024-11-08 10:02:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:02:22,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:02:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 10:02:22,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738375743] [2024-11-08 10:02:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738375743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091188396] [2024-11-08 10:02:22,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:02:22,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:22,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:22,770 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) [2024-11-08 10:02:22,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 10:02:22,843 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:02:22,843 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:02:22,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 10:02:22,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:02:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 10:02:22,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 10:02:23,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091188396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:23,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:23,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-08 10:02:23,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325293088] [2024-11-08 10:02:23,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:23,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 10:02:23,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:23,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 10:02:23,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2024-11-08 10:02:23,144 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 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) [2024-11-08 10:02:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:02:23,278 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2024-11-08 10:02:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 10:02:23,278 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 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 57 [2024-11-08 10:02:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:02:23,279 INFO L225 Difference]: With dead ends: 84 [2024-11-08 10:02:23,279 INFO L226 Difference]: Without dead ends: 62 [2024-11-08 10:02:23,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 88 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2024-11-08 10:02:23,280 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:02:23,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 21 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:02:23,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-08 10:02:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2024-11-08 10:02:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 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) [2024-11-08 10:02:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-08 10:02:23,290 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 57 [2024-11-08 10:02:23,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:02:23,290 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-08 10:02:23,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 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) [2024-11-08 10:02:23,290 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-08 10:02:23,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 10:02:23,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:02:23,291 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:02:23,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 10:02:23,495 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 [2024-11-08 10:02:23,495 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:02:23,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:02:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash -103051892, now seen corresponding path program 21 times [2024-11-08 10:02:23,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:02:23,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908684890] [2024-11-08 10:02:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:02:23,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:02:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:02:25,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:25,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908684890] [2024-11-08 10:02:25,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908684890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:25,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121096728] [2024-11-08 10:02:25,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:02:25,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:25,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:25,949 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) [2024-11-08 10:02:25,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 10:02:26,053 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 10:02:26,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:02:26,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-08 10:02:26,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:02:28,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:02:28,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:02:28,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:02:28,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:02:28,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:02:28,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:02:28,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:02:28,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 58 treesize of output 93 [2024-11-08 10:02:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:02:28,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:31,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:02:31,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 69 treesize of output 153 [2024-11-08 10:02:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 10:02:32,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121096728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:32,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:32,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 48, 39] total 118 [2024-11-08 10:02:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687704317] [2024-11-08 10:02:32,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:32,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-11-08 10:02:32,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:32,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-11-08 10:02:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1148, Invalid=12658, Unknown=0, NotChecked=0, Total=13806 [2024-11-08 10:02:32,096 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 118 states, 118 states have (on average 1.194915254237288) internal successors, (141), 118 states have internal predecessors, (141), 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) [2024-11-08 10:02:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:02:38,660 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2024-11-08 10:02:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-08 10:02:38,660 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 1.194915254237288) internal successors, (141), 118 states have internal predecessors, (141), 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 59 [2024-11-08 10:02:38,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:02:38,661 INFO L225 Difference]: With dead ends: 129 [2024-11-08 10:02:38,661 INFO L226 Difference]: Without dead ends: 124 [2024-11-08 10:02:38,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6429 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=2359, Invalid=25031, Unknown=0, NotChecked=0, Total=27390 [2024-11-08 10:02:38,663 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4211 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 4302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 4211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:02:38,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 178 Invalid, 4302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 4211 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 10:02:38,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-08 10:02:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2024-11-08 10:02:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0689655172413792) internal successors, (93), 87 states have internal predecessors, (93), 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) [2024-11-08 10:02:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2024-11-08 10:02:38,683 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 59 [2024-11-08 10:02:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:02:38,683 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2024-11-08 10:02:38,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 1.194915254237288) internal successors, (141), 118 states have internal predecessors, (141), 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) [2024-11-08 10:02:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2024-11-08 10:02:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 10:02:38,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:02:38,684 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:02:38,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-08 10:02:38,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 10:02:38,885 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:02:38,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:02:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash -582870802, now seen corresponding path program 22 times [2024-11-08 10:02:38,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:02:38,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777040323] [2024-11-08 10:02:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:02:38,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:02:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 10:02:39,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:39,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777040323] [2024-11-08 10:02:39,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777040323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:39,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325041019] [2024-11-08 10:02:39,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:02:39,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:39,095 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:02:39,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 10:02:39,167 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:02:39,167 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:02:39,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 10:02:39,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:02:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 10:02:39,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 10:02:39,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325041019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:39,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:39,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-11-08 10:02:39,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629615179] [2024-11-08 10:02:39,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:39,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 10:02:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 10:02:39,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=2029, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 10:02:39,779 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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) [2024-11-08 10:02:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:02:40,594 INFO L93 Difference]: Finished difference Result 146 states and 153 transitions. [2024-11-08 10:02:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 10:02:40,595 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 [2024-11-08 10:02:40,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:02:40,595 INFO L225 Difference]: With dead ends: 146 [2024-11-08 10:02:40,595 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 10:02:40,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 84 SyntacticMatches, 10 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=967, Invalid=6005, Unknown=0, NotChecked=0, Total=6972 [2024-11-08 10:02:40,597 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 42 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:02:40,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 65 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 10:02:40,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 10:02:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2024-11-08 10:02:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 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) [2024-11-08 10:02:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2024-11-08 10:02:40,615 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 61 [2024-11-08 10:02:40,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:02:40,615 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2024-11-08 10:02:40,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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) [2024-11-08 10:02:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2024-11-08 10:02:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 10:02:40,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:02:40,616 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:02:40,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 10:02:40,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:40,821 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:02:40,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:02:40,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1802898480, now seen corresponding path program 23 times [2024-11-08 10:02:40,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:02:40,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546197031] [2024-11-08 10:02:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:02:40,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:02:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 49 proven. 96 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:02:41,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:41,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546197031] [2024-11-08 10:02:41,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546197031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:41,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183358710] [2024-11-08 10:02:41,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:02:41,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:41,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:41,040 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:02:41,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 10:02:41,258 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-08 10:02:41,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:02:41,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 10:02:41,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:02:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:02:41,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:02:41,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183358710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:41,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:41,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-08 10:02:41,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122488722] [2024-11-08 10:02:41,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:41,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 10:02:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 10:02:41,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2024-11-08 10:02:41,752 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 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) [2024-11-08 10:02:41,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:02:41,958 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2024-11-08 10:02:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 10:02:41,959 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 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 [2024-11-08 10:02:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:02:41,959 INFO L225 Difference]: With dead ends: 92 [2024-11-08 10:02:41,959 INFO L226 Difference]: Without dead ends: 68 [2024-11-08 10:02:41,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 97 SyntacticMatches, 18 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 10:02:41,960 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 48 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:02:41,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 44 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:02:41,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-08 10:02:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-08 10:02:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 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) [2024-11-08 10:02:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-11-08 10:02:41,978 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 63 [2024-11-08 10:02:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:02:41,979 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-11-08 10:02:41,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 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) [2024-11-08 10:02:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-11-08 10:02:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 10:02:41,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:02:41,979 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:02:41,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-08 10:02:42,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:42,184 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:02:42,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:02:42,184 INFO L85 PathProgramCache]: Analyzing trace with hash -370078158, now seen corresponding path program 24 times [2024-11-08 10:02:42,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:02:42,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622644209] [2024-11-08 10:02:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:02:42,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:02:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:02:44,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622644209] [2024-11-08 10:02:44,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622644209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296480062] [2024-11-08 10:02:44,972 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:02:44,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:44,974 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:02:44,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 10:02:45,110 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-08 10:02:45,110 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:02:45,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-08 10:02:45,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:02:45,246 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 [2024-11-08 10:02:45,297 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 [2024-11-08 10:02:48,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:02:48,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:02:48,028 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 [2024-11-08 10:02:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 6 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:02:48,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 179 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 10:02:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296480062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:52,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:52,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 53, 43] total 135 [2024-11-08 10:02:52,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670898225] [2024-11-08 10:02:52,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:52,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2024-11-08 10:02:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:52,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2024-11-08 10:02:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1309, Invalid=16781, Unknown=0, NotChecked=0, Total=18090 [2024-11-08 10:02:52,550 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 135 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 135 states have internal predecessors, (161), 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) [2024-11-08 10:02:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:02:58,862 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2024-11-08 10:02:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-08 10:02:58,863 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 135 states have internal predecessors, (161), 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 65 [2024-11-08 10:02:58,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:02:58,863 INFO L225 Difference]: With dead ends: 95 [2024-11-08 10:02:58,863 INFO L226 Difference]: Without dead ends: 91 [2024-11-08 10:02:58,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=1967, Invalid=24764, Unknown=1, NotChecked=0, Total=26732 [2024-11-08 10:02:58,865 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 5023 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 5057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:02:58,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 214 Invalid, 5057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 5023 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 10:02:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-08 10:02:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2024-11-08 10:02:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 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) [2024-11-08 10:02:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2024-11-08 10:02:58,888 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 65 [2024-11-08 10:02:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:02:58,888 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2024-11-08 10:02:58,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 135 states have internal predecessors, (161), 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) [2024-11-08 10:02:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2024-11-08 10:02:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 10:02:58,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:02:58,889 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:02:58,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 10:02:59,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 10:02:59,090 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:02:59,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:02:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash 890409044, now seen corresponding path program 25 times [2024-11-08 10:02:59,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:02:59,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771347743] [2024-11-08 10:02:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:02:59,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:02:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 83 proven. 98 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:02:59,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:59,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771347743] [2024-11-08 10:02:59,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771347743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:59,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917788265] [2024-11-08 10:02:59,322 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:02:59,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:59,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:59,325 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:02:59,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 10:02:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:59,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 10:02:59,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:02:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:02:59,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:02:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:02:59,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917788265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:02:59,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:02:59,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-08 10:02:59,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190629098] [2024-11-08 10:02:59,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:02:59,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 10:02:59,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:02:59,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 10:02:59,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 10:02:59,879 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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) [2024-11-08 10:03:00,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:03:00,071 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2024-11-08 10:03:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 10:03:00,072 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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 67 [2024-11-08 10:03:00,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:03:00,072 INFO L225 Difference]: With dead ends: 140 [2024-11-08 10:03:00,072 INFO L226 Difference]: Without dead ends: 74 [2024-11-08 10:03:00,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 10:03:00,074 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:03:00,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:03:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-08 10:03:00,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-11-08 10:03:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 72 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) [2024-11-08 10:03:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2024-11-08 10:03:00,100 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 67 [2024-11-08 10:03:00,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:03:00,100 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2024-11-08 10:03:00,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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) [2024-11-08 10:03:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2024-11-08 10:03:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 10:03:00,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:03:00,100 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:03:00,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-08 10:03:00,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 10:03:00,303 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:03:00,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:03:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash -290594442, now seen corresponding path program 26 times [2024-11-08 10:03:00,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:03:00,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105155535] [2024-11-08 10:03:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:03:00,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:03:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:03:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 10:03:00,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:03:00,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105155535] [2024-11-08 10:03:00,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105155535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:03:00,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285502942] [2024-11-08 10:03:00,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:03:00,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:03:00,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:03:00,598 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:03:00,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 10:03:00,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:03:00,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:03:00,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 10:03:00,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:03:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 10:03:00,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:03:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 10:03:01,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285502942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:03:01,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:03:01,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-08 10:03:01,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535817770] [2024-11-08 10:03:01,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:03:01,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 10:03:01,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:03:01,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 10:03:01,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 10:03:01,006 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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) [2024-11-08 10:03:01,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:03:01,157 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2024-11-08 10:03:01,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 10:03:01,157 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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 69 [2024-11-08 10:03:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:03:01,158 INFO L225 Difference]: With dead ends: 100 [2024-11-08 10:03:01,158 INFO L226 Difference]: Without dead ends: 74 [2024-11-08 10:03:01,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 106 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 10:03:01,159 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 48 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:03:01,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 42 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:03:01,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-08 10:03:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-11-08 10:03:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 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) [2024-11-08 10:03:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2024-11-08 10:03:01,180 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 69 [2024-11-08 10:03:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:03:01,180 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2024-11-08 10:03:01,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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) [2024-11-08 10:03:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2024-11-08 10:03:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 10:03:01,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:03:01,181 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:03:01,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-08 10:03:01,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 10:03:01,386 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:03:01,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:03:01,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1295173032, now seen corresponding path program 27 times [2024-11-08 10:03:01,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:03:01,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231942903] [2024-11-08 10:03:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:03:01,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:03:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:03:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:03:05,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:03:05,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231942903] [2024-11-08 10:03:05,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231942903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:03:05,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904398822] [2024-11-08 10:03:05,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:03:05,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:03:05,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:03:05,391 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:03:05,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 10:03:05,543 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-08 10:03:05,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:03:05,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-08 10:03:05,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:03:05,628 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 [2024-11-08 10:03:09,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:03:09,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:03:09,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:03:09,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:03:09,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:03:09,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:03:09,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:03:09,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:03:09,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:03:09,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:03:09,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:03:09,075 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 [2024-11-08 10:03:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 19 proven. 200 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:03:09,384 INFO L311 TraceCheckSpWp]: Computing backward predicates...