./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/loops-crafted-1/mono-crafted_3.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 4548c451706b7658e6a882e8eef66dc3c360e6aea0e4326d7cc0b87e2b58239c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:50:53,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:50:53,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:50:53,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:50:53,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:50:53,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:50:53,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:50:53,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:50:53,295 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:50:53,298 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:50:53,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:50:53,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:50:53,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:50:53,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:50:53,300 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:50:53,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:50:53,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:50:53,301 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:50:53,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:50:53,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:50:53,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:50:53,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:50:53,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:50:53,303 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:50:53,303 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:50:53,303 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:50:53,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:50:53,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:50:53,304 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:50:53,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:50:53,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:50:53,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:50:53,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:50:53,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:50:53,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:50:53,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:50:53,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:50:53,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:50:53,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:50:53,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:50:53,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:50:53,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:50:53,308 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4548c451706b7658e6a882e8eef66dc3c360e6aea0e4326d7cc0b87e2b58239c [2024-11-16 06:50:53,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:50:53,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:50:53,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:50:53,584 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:50:53,585 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:50:53,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c [2024-11-16 06:50:54,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:50:55,182 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:50:55,183 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c [2024-11-16 06:50:55,190 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86a53089/e1724dd0351648fa94b93e55f5fd2c6b/FLAG067ac9ba0 [2024-11-16 06:50:55,204 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86a53089/e1724dd0351648fa94b93e55f5fd2c6b [2024-11-16 06:50:55,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:50:55,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:50:55,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:50:55,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:50:55,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:50:55,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e583c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55, skipping insertion in model container [2024-11-16 06:50:55,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:50:55,395 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/loops-crafted-1/mono-crafted_3.c[318,331] [2024-11-16 06:50:55,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:50:55,414 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:50:55,425 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/loops-crafted-1/mono-crafted_3.c[318,331] [2024-11-16 06:50:55,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:50:55,442 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:50:55,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55 WrapperNode [2024-11-16 06:50:55,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:50:55,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:50:55,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:50:55,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:50:55,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,469 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2024-11-16 06:50:55,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:50:55,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:50:55,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:50:55,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:50:55,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,479 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,489 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 06:50:55,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,492 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:50:55,500 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:50:55,500 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:50:55,500 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:50:55,501 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (1/1) ... [2024-11-16 06:50:55,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:50:55,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:55,535 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) [2024-11-16 06:50:55,537 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 [2024-11-16 06:50:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:50:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:50:55,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:50:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:50:55,637 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:50:55,639 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:50:55,740 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-16 06:50:55,740 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:50:55,756 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:50:55,757 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:50:55,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:50:55 BoogieIcfgContainer [2024-11-16 06:50:55,757 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:50:55,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:50:55,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:50:55,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:50:55,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:50:55" (1/3) ... [2024-11-16 06:50:55,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5728059c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:50:55, skipping insertion in model container [2024-11-16 06:50:55,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:55" (2/3) ... [2024-11-16 06:50:55,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5728059c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:50:55, skipping insertion in model container [2024-11-16 06:50:55,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:50:55" (3/3) ... [2024-11-16 06:50:55,766 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_3.c [2024-11-16 06:50:55,785 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:50:55,786 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:50:55,840 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:50:55,850 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;@4b82dc86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:50:55,851 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:50:55,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 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) [2024-11-16 06:50:55,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-16 06:50:55,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:55,862 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:55,863 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:55,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1711937897, now seen corresponding path program 1 times [2024-11-16 06:50:55,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:55,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091726525] [2024-11-16 06:50:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:56,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091726525] [2024-11-16 06:50:56,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091726525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:50:56,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:50:56,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:50:56,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605354243] [2024-11-16 06:50:56,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:56,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:50:56,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:56,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:50:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:50:56,067 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-16 06:50:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:56,081 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2024-11-16 06:50:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:50:56,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-11-16 06:50:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:56,091 INFO L225 Difference]: With dead ends: 28 [2024-11-16 06:50:56,091 INFO L226 Difference]: Without dead ends: 12 [2024-11-16 06:50:56,094 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 [2024-11-16 06:50:56,099 INFO L432 NwaCegarLoop]: 18 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, 18 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 [2024-11-16 06:50:56,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:56,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-16 06:50:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-16 06:50:56,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2024-11-16 06:50:56,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-16 06:50:56,130 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2024-11-16 06:50:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:56,130 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-16 06:50:56,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-16 06:50:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-16 06:50:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-16 06:50:56,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:56,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:56,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:50:56,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:56,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash 866787384, now seen corresponding path program 1 times [2024-11-16 06:50:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655097880] [2024-11-16 06:50:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:56,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:56,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655097880] [2024-11-16 06:50:56,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655097880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:50:56,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:50:56,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:50:56,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981302573] [2024-11-16 06:50:56,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:56,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:50:56,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:56,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:50:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:50:56,276 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-16 06:50:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:56,308 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2024-11-16 06:50:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:50:56,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-16 06:50:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:56,309 INFO L225 Difference]: With dead ends: 25 [2024-11-16 06:50:56,310 INFO L226 Difference]: Without dead ends: 15 [2024-11-16 06:50:56,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:50:56,312 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:56,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-16 06:50:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-16 06:50:56,319 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) [2024-11-16 06:50:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-16 06:50:56,320 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2024-11-16 06:50:56,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:56,320 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-16 06:50:56,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-16 06:50:56,321 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-16 06:50:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 06:50:56,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:56,322 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:56,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:50:56,323 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:56,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:56,324 INFO L85 PathProgramCache]: Analyzing trace with hash -288711831, now seen corresponding path program 1 times [2024-11-16 06:50:56,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:56,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096275400] [2024-11-16 06:50:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:56,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:50:56,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:56,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096275400] [2024-11-16 06:50:56,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096275400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:50:56,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:50:56,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:50:56,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315222304] [2024-11-16 06:50:56,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:56,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:50:56,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:56,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:50:56,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:50:56,397 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-16 06:50:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:56,411 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-11-16 06:50:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:50:56,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 [2024-11-16 06:50:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:56,412 INFO L225 Difference]: With dead ends: 22 [2024-11-16 06:50:56,412 INFO L226 Difference]: Without dead ends: 17 [2024-11-16 06:50:56,413 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 [2024-11-16 06:50:56,414 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:56,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:56,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-16 06:50:56,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-16 06:50:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-16 06:50:56,422 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2024-11-16 06:50:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:56,424 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-16 06:50:56,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-16 06:50:56,425 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-16 06:50:56,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 06:50:56,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:56,428 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:56,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 06:50:56,428 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:56,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:56,429 INFO L85 PathProgramCache]: Analyzing trace with hash -652223960, now seen corresponding path program 1 times [2024-11-16 06:50:56,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:56,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691055914] [2024-11-16 06:50:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:56,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:50:56,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:56,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691055914] [2024-11-16 06:50:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691055914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:56,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414840804] [2024-11-16 06:50:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:56,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:56,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:56,516 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) [2024-11-16 06:50:56,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:50:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:56,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 06:50:56,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:50:56,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:50:56,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414840804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:56,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:56,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-16 06:50:56,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245162441] [2024-11-16 06:50:56,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:56,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 06:50:56,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 06:50:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:50:56,721 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2024-11-16 06:50:56,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:56,825 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2024-11-16 06:50:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:50:56,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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 15 [2024-11-16 06:50:56,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:56,827 INFO L225 Difference]: With dead ends: 39 [2024-11-16 06:50:56,827 INFO L226 Difference]: Without dead ends: 27 [2024-11-16 06:50:56,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:50:56,828 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:56,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 44 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-16 06:50:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-16 06:50:56,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 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) [2024-11-16 06:50:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-16 06:50:56,834 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 15 [2024-11-16 06:50:56,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:56,834 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-16 06:50:56,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2024-11-16 06:50:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-16 06:50:56,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 06:50:56,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:56,836 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:56,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:50:57,041 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 [2024-11-16 06:50:57,041 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:57,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:57,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1078332522, now seen corresponding path program 1 times [2024-11-16 06:50:57,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:57,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373484547] [2024-11-16 06:50:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:57,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:57,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:57,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373484547] [2024-11-16 06:50:57,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373484547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:57,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074728272] [2024-11-16 06:50:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:57,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:57,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:57,164 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) [2024-11-16 06:50:57,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:50:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:57,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:50:57,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:57,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074728272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:57,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-16 06:50:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740435283] [2024-11-16 06:50:57,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:57,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 06:50:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 06:50:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:50:57,345 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:57,401 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-16 06:50:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:50:57,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-16 06:50:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:57,402 INFO L225 Difference]: With dead ends: 58 [2024-11-16 06:50:57,402 INFO L226 Difference]: Without dead ends: 39 [2024-11-16 06:50:57,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:50:57,405 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:57,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:57,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-16 06:50:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-16 06:50:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 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) [2024-11-16 06:50:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-11-16 06:50:57,416 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 26 [2024-11-16 06:50:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:57,418 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-11-16 06:50:57,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-11-16 06:50:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 06:50:57,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:57,420 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:57,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 06:50:57,620 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 [2024-11-16 06:50:57,621 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:57,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:57,621 INFO L85 PathProgramCache]: Analyzing trace with hash 193656918, now seen corresponding path program 2 times [2024-11-16 06:50:57,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:57,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085846334] [2024-11-16 06:50:57,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:57,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085846334] [2024-11-16 06:50:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085846334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669116530] [2024-11-16 06:50:57,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:50:57,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:57,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:57,875 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) [2024-11-16 06:50:57,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:50:57,932 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:50:57,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:50:57,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:50:57,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:58,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:58,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669116530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:58,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:58,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-16 06:50:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347175682] [2024-11-16 06:50:58,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:58,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 06:50:58,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:58,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 06:50:58,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:50:58,171 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 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) [2024-11-16 06:50:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:58,246 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2024-11-16 06:50:58,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 06:50:58,247 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 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 38 [2024-11-16 06:50:58,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:58,248 INFO L225 Difference]: With dead ends: 82 [2024-11-16 06:50:58,249 INFO L226 Difference]: Without dead ends: 63 [2024-11-16 06:50:58,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:50:58,250 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:58,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:50:58,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-16 06:50:58,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-16 06:50:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 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) [2024-11-16 06:50:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2024-11-16 06:50:58,260 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 38 [2024-11-16 06:50:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:58,260 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2024-11-16 06:50:58,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 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) [2024-11-16 06:50:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2024-11-16 06:50:58,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 06:50:58,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:58,266 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 14, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:58,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 06:50:58,467 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 [2024-11-16 06:50:58,468 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:58,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:58,468 INFO L85 PathProgramCache]: Analyzing trace with hash 578396630, now seen corresponding path program 3 times [2024-11-16 06:50:58,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:58,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709532283] [2024-11-16 06:50:58,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:58,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 75 proven. 315 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:58,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:58,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709532283] [2024-11-16 06:50:58,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709532283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:58,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521124453] [2024-11-16 06:50:58,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:50:58,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:58,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:58,971 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) [2024-11-16 06:50:58,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:50:59,031 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 06:50:59,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:50:59,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:50:59,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 77 proven. 6 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-16 06:50:59,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 77 proven. 6 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-16 06:50:59,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521124453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:59,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:59,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 25 [2024-11-16 06:50:59,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777313093] [2024-11-16 06:50:59,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:59,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 06:50:59,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:59,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 06:50:59,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:50:59,325 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 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) [2024-11-16 06:50:59,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:59,601 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2024-11-16 06:50:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 06:50:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 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 62 [2024-11-16 06:50:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:59,604 INFO L225 Difference]: With dead ends: 102 [2024-11-16 06:50:59,606 INFO L226 Difference]: Without dead ends: 83 [2024-11-16 06:50:59,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=525, Invalid=1035, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 06:50:59,608 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:59,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:50:59,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-16 06:50:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2024-11-16 06:50:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 73 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) [2024-11-16 06:50:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-11-16 06:50:59,623 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 62 [2024-11-16 06:50:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:59,625 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-11-16 06:50:59,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 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) [2024-11-16 06:50:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-11-16 06:50:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 06:50:59,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:59,627 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 15, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:59,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 06:50:59,832 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 [2024-11-16 06:50:59,833 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:59,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1343036675, now seen corresponding path program 4 times [2024-11-16 06:50:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644830619] [2024-11-16 06:50:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 80 proven. 360 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:51:00,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:00,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644830619] [2024-11-16 06:51:00,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644830619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:00,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065021978] [2024-11-16 06:51:00,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:51:00,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:00,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:00,307 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) [2024-11-16 06:51:00,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:51:00,375 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:51:00,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:00,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 06:51:00,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 80 proven. 360 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:51:00,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 80 proven. 360 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:51:00,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065021978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:00,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:00,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-11-16 06:51:00,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877415278] [2024-11-16 06:51:00,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:00,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 06:51:00,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:00,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 06:51:00,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:51:00,979 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 35 states, 35 states have (on average 3.257142857142857) internal successors, (114), 35 states have internal predecessors, (114), 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) [2024-11-16 06:51:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:01,097 INFO L93 Difference]: Finished difference Result 152 states and 175 transitions. [2024-11-16 06:51:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-16 06:51:01,097 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.257142857142857) internal successors, (114), 35 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 06:51:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:01,099 INFO L225 Difference]: With dead ends: 152 [2024-11-16 06:51:01,099 INFO L226 Difference]: Without dead ends: 125 [2024-11-16 06:51:01,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:51:01,100 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:01,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:51:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-16 06:51:01,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-16 06:51:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.032258064516129) internal successors, (128), 124 states have internal predecessors, (128), 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) [2024-11-16 06:51:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2024-11-16 06:51:01,118 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 73 [2024-11-16 06:51:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:01,120 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2024-11-16 06:51:01,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.257142857142857) internal successors, (114), 35 states have internal predecessors, (114), 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) [2024-11-16 06:51:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2024-11-16 06:51:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-16 06:51:01,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:01,122 INFO L215 NwaCegarLoop]: trace histogram [35, 34, 32, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:01,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 06:51:01,323 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 [2024-11-16 06:51:01,324 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:01,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:01,324 INFO L85 PathProgramCache]: Analyzing trace with hash 654152370, now seen corresponding path program 5 times [2024-11-16 06:51:01,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:01,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817332189] [2024-11-16 06:51:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:01,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 165 proven. 1584 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:51:02,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:02,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817332189] [2024-11-16 06:51:02,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817332189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:02,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081699385] [2024-11-16 06:51:02,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:51:02,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:02,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:02,636 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) [2024-11-16 06:51:02,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:51:02,740 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2024-11-16 06:51:02,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:02,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-16 06:51:02,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 165 proven. 1584 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:51:02,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 165 proven. 1584 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:51:04,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081699385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:04,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:04,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2024-11-16 06:51:04,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476291547] [2024-11-16 06:51:04,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:04,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-16 06:51:04,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:04,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-16 06:51:04,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 06:51:04,571 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand has 69 states, 69 states have (on average 3.130434782608696) internal successors, (216), 69 states have internal predecessors, (216), 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) [2024-11-16 06:51:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:04,831 INFO L93 Difference]: Finished difference Result 254 states and 294 transitions. [2024-11-16 06:51:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-16 06:51:04,832 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.130434782608696) internal successors, (216), 69 states have internal predecessors, (216), 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 124 [2024-11-16 06:51:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:04,836 INFO L225 Difference]: With dead ends: 254 [2024-11-16 06:51:04,836 INFO L226 Difference]: Without dead ends: 227 [2024-11-16 06:51:04,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 06:51:04,839 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:04,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:51:04,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-16 06:51:04,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-11-16 06:51:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.0176991150442478) internal successors, (230), 226 states have internal predecessors, (230), 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) [2024-11-16 06:51:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 230 transitions. [2024-11-16 06:51:04,865 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 230 transitions. Word has length 124 [2024-11-16 06:51:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:04,868 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 230 transitions. [2024-11-16 06:51:04,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.130434782608696) internal successors, (216), 69 states have internal predecessors, (216), 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) [2024-11-16 06:51:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 230 transitions. [2024-11-16 06:51:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-16 06:51:04,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:04,871 INFO L215 NwaCegarLoop]: trace histogram [69, 68, 66, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:04,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 06:51:05,072 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 [2024-11-16 06:51:05,072 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:05,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash 645613330, now seen corresponding path program 6 times [2024-11-16 06:51:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:05,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586734562] [2024-11-16 06:51:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:05,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7012 backedges. 335 proven. 6633 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:51:09,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:09,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586734562] [2024-11-16 06:51:09,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586734562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:09,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501992872] [2024-11-16 06:51:09,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:51:09,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:09,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:09,514 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) [2024-11-16 06:51:09,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:51:09,595 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-16 06:51:09,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:09,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:51:09,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7012 backedges. 528 proven. 7 refuted. 0 times theorem prover too weak. 6477 trivial. 0 not checked. [2024-11-16 06:51:09,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7012 backedges. 528 proven. 7 refuted. 0 times theorem prover too weak. 6477 trivial. 0 not checked. [2024-11-16 06:51:09,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501992872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:09,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:09,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 5, 5] total 75 [2024-11-16 06:51:09,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934929016] [2024-11-16 06:51:09,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:09,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-16 06:51:09,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-16 06:51:09,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 06:51:09,980 INFO L87 Difference]: Start difference. First operand 227 states and 230 transitions. Second operand has 75 states, 75 states have (on average 3.1466666666666665) internal successors, (236), 75 states have internal predecessors, (236), 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) [2024-11-16 06:51:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:10,237 INFO L93 Difference]: Finished difference Result 269 states and 284 transitions. [2024-11-16 06:51:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-16 06:51:10,238 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.1466666666666665) internal successors, (236), 75 states have internal predecessors, (236), 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 226 [2024-11-16 06:51:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:10,241 INFO L225 Difference]: With dead ends: 269 [2024-11-16 06:51:10,241 INFO L226 Difference]: Without dead ends: 242 [2024-11-16 06:51:10,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 06:51:10,244 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:10,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 144 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:51:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-16 06:51:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-11-16 06:51:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.033195020746888) internal successors, (249), 241 states have internal predecessors, (249), 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) [2024-11-16 06:51:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 249 transitions. [2024-11-16 06:51:10,270 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 249 transitions. Word has length 226 [2024-11-16 06:51:10,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:10,271 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 249 transitions. [2024-11-16 06:51:10,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.1466666666666665) internal successors, (236), 75 states have internal predecessors, (236), 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) [2024-11-16 06:51:10,271 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 249 transitions. [2024-11-16 06:51:10,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-16 06:51:10,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:10,273 INFO L215 NwaCegarLoop]: trace histogram [74, 73, 67, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:10,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 06:51:10,474 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 [2024-11-16 06:51:10,474 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:10,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:10,475 INFO L85 PathProgramCache]: Analyzing trace with hash 982686531, now seen corresponding path program 7 times [2024-11-16 06:51:10,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:10,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842486552] [2024-11-16 06:51:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:10,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8072 backedges. 1156 proven. 6834 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:14,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:14,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842486552] [2024-11-16 06:51:14,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842486552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:14,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644780204] [2024-11-16 06:51:14,003 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:51:14,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:14,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:14,005 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) [2024-11-16 06:51:14,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:51:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:14,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-11-16 06:51:14,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8072 backedges. 1156 proven. 6834 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:14,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8072 backedges. 1156 proven. 6834 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:19,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644780204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:19,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:19,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 139 [2024-11-16 06:51:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065288778] [2024-11-16 06:51:19,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:19,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-11-16 06:51:19,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-11-16 06:51:19,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-11-16 06:51:19,297 INFO L87 Difference]: Start difference. First operand 242 states and 249 transitions. Second operand has 139 states, 139 states have (on average 3.064748201438849) internal successors, (426), 139 states have internal predecessors, (426), 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) [2024-11-16 06:51:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:19,793 INFO L93 Difference]: Finished difference Result 488 states and 571 transitions. [2024-11-16 06:51:19,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-11-16 06:51:19,794 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 3.064748201438849) internal successors, (426), 139 states have internal predecessors, (426), 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 241 [2024-11-16 06:51:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:19,797 INFO L225 Difference]: With dead ends: 488 [2024-11-16 06:51:19,797 INFO L226 Difference]: Without dead ends: 449 [2024-11-16 06:51:19,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-11-16 06:51:19,802 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:19,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:51:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-16 06:51:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2024-11-16 06:51:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.0178571428571428) internal successors, (456), 448 states have internal predecessors, (456), 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) [2024-11-16 06:51:19,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 456 transitions. [2024-11-16 06:51:19,821 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 456 transitions. Word has length 241 [2024-11-16 06:51:19,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:19,821 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 456 transitions. [2024-11-16 06:51:19,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 3.064748201438849) internal successors, (426), 139 states have internal predecessors, (426), 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) [2024-11-16 06:51:19,822 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 456 transitions. [2024-11-16 06:51:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-16 06:51:19,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:19,828 INFO L215 NwaCegarLoop]: trace histogram [143, 142, 136, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:19,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 06:51:20,031 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 [2024-11-16 06:51:20,032 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:20,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:20,032 INFO L85 PathProgramCache]: Analyzing trace with hash 134796210, now seen corresponding path program 8 times [2024-11-16 06:51:20,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:20,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658746685] [2024-11-16 06:51:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:20,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 30359 backedges. 2329 proven. 27948 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:34,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658746685] [2024-11-16 06:51:34,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658746685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257261261] [2024-11-16 06:51:34,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:51:34,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:34,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:34,480 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) [2024-11-16 06:51:34,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:51:34,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:51:34,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:34,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 274 conjuncts are in the unsatisfiable core [2024-11-16 06:51:34,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30359 backedges. 2329 proven. 27948 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:35,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 30359 backedges. 2329 proven. 27948 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:53,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257261261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:53,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:53,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139, 139] total 277 [2024-11-16 06:51:53,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235943687] [2024-11-16 06:51:53,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:53,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 277 states [2024-11-16 06:51:53,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:53,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 277 interpolants. [2024-11-16 06:51:53,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-11-16 06:51:53,512 INFO L87 Difference]: Start difference. First operand 449 states and 456 transitions. Second operand has 277 states, 277 states have (on average 3.032490974729242) internal successors, (840), 277 states have internal predecessors, (840), 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) [2024-11-16 06:51:55,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:55,598 INFO L93 Difference]: Finished difference Result 902 states and 1054 transitions. [2024-11-16 06:51:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2024-11-16 06:51:55,600 INFO L78 Accepts]: Start accepts. Automaton has has 277 states, 277 states have (on average 3.032490974729242) internal successors, (840), 277 states have internal predecessors, (840), 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 448 [2024-11-16 06:51:55,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:55,603 INFO L225 Difference]: With dead ends: 902 [2024-11-16 06:51:55,603 INFO L226 Difference]: Without dead ends: 863 [2024-11-16 06:51:55,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-11-16 06:51:55,608 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:55,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 06:51:55,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-11-16 06:51:55,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2024-11-16 06:51:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 862 states have (on average 1.0092807424593968) internal successors, (870), 862 states have internal predecessors, (870), 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) [2024-11-16 06:51:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 870 transitions. [2024-11-16 06:51:55,637 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 870 transitions. Word has length 448 [2024-11-16 06:51:55,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:55,638 INFO L471 AbstractCegarLoop]: Abstraction has 863 states and 870 transitions. [2024-11-16 06:51:55,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 277 states, 277 states have (on average 3.032490974729242) internal successors, (840), 277 states have internal predecessors, (840), 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) [2024-11-16 06:51:55,639 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 870 transitions. [2024-11-16 06:51:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2024-11-16 06:51:55,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:55,658 INFO L215 NwaCegarLoop]: trace histogram [281, 280, 274, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:55,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 06:51:55,859 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 [2024-11-16 06:51:55,859 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:55,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1310061458, now seen corresponding path program 9 times [2024-11-16 06:51:55,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:55,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496416290] [2024-11-16 06:51:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:55,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat