./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/count_by_k.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-new/count_by_k.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee41851a84d57c0c483c2a5edf48180b7c141c1991cdc82f0d66c6775eb49f5b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:18:15,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:18:15,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:18:15,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:18:15,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:18:15,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:18:15,339 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:18:15,339 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:18:15,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:18:15,344 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:18:15,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:18:15,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:18:15,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:18:15,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:18:15,345 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:18:15,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:18:15,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:18:15,346 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:18:15,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:18:15,348 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:18:15,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:18:15,349 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:18:15,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:18:15,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:18:15,350 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:18:15,350 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:18:15,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:18:15,351 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:18:15,351 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:18:15,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:18:15,360 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:18:15,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:18:15,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:18:15,360 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:18:15,360 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:18:15,361 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:18:15,361 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:18:15,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:18:15,361 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:18:15,361 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:18:15,362 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:18:15,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:18:15,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee41851a84d57c0c483c2a5edf48180b7c141c1991cdc82f0d66c6775eb49f5b [2024-11-09 22:18:15,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:18:15,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:18:15,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:18:15,639 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:18:15,639 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:18:15,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/count_by_k.i [2024-11-09 22:18:17,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:18:17,272 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:18:17,273 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/count_by_k.i [2024-11-09 22:18:17,281 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad545e93/bab62e7e29c54bcba55d48d0bc0aad37/FLAG15a3e016f [2024-11-09 22:18:17,292 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad545e93/bab62e7e29c54bcba55d48d0bc0aad37 [2024-11-09 22:18:17,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:18:17,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:18:17,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:18:17,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:18:17,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:18:17,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66840574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17, skipping insertion in model container [2024-11-09 22:18:17,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:18:17,496 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/loop-new/count_by_k.i[891,904] [2024-11-09 22:18:17,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:18:17,521 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:18:17,533 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/loop-new/count_by_k.i[891,904] [2024-11-09 22:18:17,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:18:17,554 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:18:17,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17 WrapperNode [2024-11-09 22:18:17,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:18:17,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:18:17,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:18:17,556 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:18:17,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,584 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2024-11-09 22:18:17,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:18:17,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:18:17,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:18:17,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:18:17,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,610 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]. [2024-11-09 22:18:17,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,614 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:18:17,618 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:18:17,619 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:18:17,619 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:18:17,620 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (1/1) ... [2024-11-09 22:18:17,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:18:17,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:18:17,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 22:18:17,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 22:18:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:18:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:18:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:18:17,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:18:17,767 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:18:17,771 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:18:17,884 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-09 22:18:17,887 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:18:17,897 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:18:17,898 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:18:17,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:18:17 BoogieIcfgContainer [2024-11-09 22:18:17,898 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:18:17,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:18:17,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:18:17,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:18:17,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:18:17" (1/3) ... [2024-11-09 22:18:17,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb08078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:18:17, skipping insertion in model container [2024-11-09 22:18:17,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:18:17" (2/3) ... [2024-11-09 22:18:17,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb08078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:18:17, skipping insertion in model container [2024-11-09 22:18:17,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:18:17" (3/3) ... [2024-11-09 22:18:17,910 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_k.i [2024-11-09 22:18:17,929 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:18:17,929 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:18:17,991 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:18:17,999 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;@2e2be6cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:18:18,000 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:18:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 22:18:18,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:18,012 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:18,013 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:18,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:18,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1710983592, now seen corresponding path program 1 times [2024-11-09 22:18:18,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:18,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578273275] [2024-11-09 22:18:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:18,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578273275] [2024-11-09 22:18:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578273275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:18:18,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:18:18,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:18:18,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212764209] [2024-11-09 22:18:18,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:18:18,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:18:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:18,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:18:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:18:18,213 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2024-11-09 22:18:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:18,232 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-09 22:18:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:18:18,235 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 [2024-11-09 22:18:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:18,241 INFO L225 Difference]: With dead ends: 24 [2024-11-09 22:18:18,242 INFO L226 Difference]: Without dead ends: 10 [2024-11-09 22:18:18,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:18:18,249 INFO L432 NwaCegarLoop]: 15 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, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:18,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:18:18,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-09 22:18:18,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-09 22:18:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2024-11-09 22:18:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2024-11-09 22:18:18,281 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2024-11-09 22:18:18,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:18,282 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-11-09 22:18:18,282 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) [2024-11-09 22:18:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2024-11-09 22:18:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 22:18:18,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:18,283 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:18,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:18:18,284 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:18,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1527605329, now seen corresponding path program 1 times [2024-11-09 22:18:18,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:18,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687831366] [2024-11-09 22:18:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:18,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:18,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:18,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687831366] [2024-11-09 22:18:18,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687831366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:18:18,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:18:18,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:18:18,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751072333] [2024-11-09 22:18:18,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:18:18,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:18:18,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:18,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:18:18,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:18:18,588 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:18,617 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2024-11-09 22:18:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:18:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 22:18:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:18,618 INFO L225 Difference]: With dead ends: 17 [2024-11-09 22:18:18,618 INFO L226 Difference]: Without dead ends: 12 [2024-11-09 22:18:18,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:18:18,619 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:18,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:18:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-09 22:18:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-09 22:18:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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) [2024-11-09 22:18:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-09 22:18:18,626 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2024-11-09 22:18:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:18,626 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-09 22:18:18,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-09 22:18:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 22:18:18,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:18,629 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:18,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:18:18,629 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:18,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:18,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1522934514, now seen corresponding path program 1 times [2024-11-09 22:18:18,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:18,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614953111] [2024-11-09 22:18:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:18,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:18,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:18,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614953111] [2024-11-09 22:18:18,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614953111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:18:18,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426455188] [2024-11-09 22:18:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:18,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:18,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:18:18,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:18:18,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:18:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:18,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 22:18:18,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:18:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:18,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:18:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:19,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426455188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:18:19,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:18:19,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2024-11-09 22:18:19,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619551134] [2024-11-09 22:18:19,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:18:19,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 22:18:19,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:19,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 22:18:19,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:18:19,081 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:19,109 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2024-11-09 22:18:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:18:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 22:18:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:19,112 INFO L225 Difference]: With dead ends: 21 [2024-11-09 22:18:19,112 INFO L226 Difference]: Without dead ends: 16 [2024-11-09 22:18:19,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:18:19,114 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:19,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:18:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-09 22:18:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-09 22:18:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-11-09 22:18:19,122 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2024-11-09 22:18:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:19,123 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-11-09 22:18:19,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-11-09 22:18:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 22:18:19,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:19,124 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:19,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 22:18:19,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:19,326 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:19,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:19,326 INFO L85 PathProgramCache]: Analyzing trace with hash 119325836, now seen corresponding path program 2 times [2024-11-09 22:18:19,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:19,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201448600] [2024-11-09 22:18:19,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:19,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:19,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201448600] [2024-11-09 22:18:19,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201448600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:18:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375051762] [2024-11-09 22:18:19,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:18:19,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:19,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:18:19,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:18:19,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:18:19,491 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:18:19,492 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:18:19,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 22:18:19,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:18:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:19,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:18:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:19,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375051762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:18:19,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:18:19,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 22:18:19,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068516210] [2024-11-09 22:18:19,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:18:19,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 22:18:19,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 22:18:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:18:19,685 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:19,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:19,780 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-11-09 22:18:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 22:18:19,780 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 22:18:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:19,781 INFO L225 Difference]: With dead ends: 29 [2024-11-09 22:18:19,781 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 22:18:19,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2024-11-09 22:18:19,783 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:19,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:18:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 22:18:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-09 22:18:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-11-09 22:18:19,789 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2024-11-09 22:18:19,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:19,789 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-11-09 22:18:19,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:19,789 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-11-09 22:18:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 22:18:19,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:19,790 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:19,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:18:19,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 22:18:19,995 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:19,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:19,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2145273480, now seen corresponding path program 3 times [2024-11-09 22:18:19,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:19,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640797384] [2024-11-09 22:18:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:19,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:20,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640797384] [2024-11-09 22:18:20,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640797384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:18:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076080905] [2024-11-09 22:18:20,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:18:20,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:18:20,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:18:20,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:18:20,208 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-09 22:18:20,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:18:20,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 22:18:20,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:18:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:20,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:18:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:20,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076080905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:18:20,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:18:20,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-09 22:18:20,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101687336] [2024-11-09 22:18:20,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:18:20,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 22:18:20,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:20,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 22:18:20,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-09 22:18:20,600 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:20,890 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2024-11-09 22:18:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 22:18:20,891 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 22:18:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:20,892 INFO L225 Difference]: With dead ends: 45 [2024-11-09 22:18:20,893 INFO L226 Difference]: Without dead ends: 40 [2024-11-09 22:18:20,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=339, Invalid=717, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 22:18:20,895 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:20,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:18:20,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-09 22:18:20,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-09 22:18:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2024-11-09 22:18:20,906 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 23 [2024-11-09 22:18:20,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:20,906 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2024-11-09 22:18:20,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:20,910 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2024-11-09 22:18:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 22:18:20,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:20,911 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:20,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 22:18:21,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:21,112 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:21,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:21,112 INFO L85 PathProgramCache]: Analyzing trace with hash -306047360, now seen corresponding path program 4 times [2024-11-09 22:18:21,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:21,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618064649] [2024-11-09 22:18:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:21,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:21,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:21,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618064649] [2024-11-09 22:18:21,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618064649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:18:21,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911791659] [2024-11-09 22:18:21,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:18:21,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:21,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:18:21,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:18:21,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:18:21,585 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:18:21,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:18:21,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 22:18:21,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:18:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:21,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:18:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:22,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911791659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:18:22,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:18:22,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2024-11-09 22:18:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109801444] [2024-11-09 22:18:22,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:18:22,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 22:18:22,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 22:18:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=842, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 22:18:22,367 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:23,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:23,298 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2024-11-09 22:18:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 22:18:23,299 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-09 22:18:23,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:23,299 INFO L225 Difference]: With dead ends: 77 [2024-11-09 22:18:23,299 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 22:18:23,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1375, Invalid=2785, Unknown=0, NotChecked=0, Total=4160 [2024-11-09 22:18:23,302 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:23,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:18:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 22:18:23,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-09 22:18:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2024-11-09 22:18:23,311 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 39 [2024-11-09 22:18:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:23,312 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2024-11-09 22:18:23,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2024-11-09 22:18:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 22:18:23,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:23,314 INFO L215 NwaCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:23,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 22:18:23,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:23,515 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:23,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:23,515 INFO L85 PathProgramCache]: Analyzing trace with hash 815588976, now seen corresponding path program 5 times [2024-11-09 22:18:23,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:23,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971130761] [2024-11-09 22:18:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:23,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:24,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971130761] [2024-11-09 22:18:24,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971130761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:18:24,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257493744] [2024-11-09 22:18:24,366 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:18:24,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:24,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:18:24,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:18:24,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:18:24,426 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2024-11-09 22:18:24,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:18:24,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 22:18:24,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:18:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:24,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:18:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:26,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257493744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:18:26,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:18:26,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 68 [2024-11-09 22:18:26,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738222694] [2024-11-09 22:18:26,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:18:26,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-09 22:18:26,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:26,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-09 22:18:26,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1594, Invalid=2962, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 22:18:26,105 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 68 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:29,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:29,115 INFO L93 Difference]: Finished difference Result 141 states and 172 transitions. [2024-11-09 22:18:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-09 22:18:29,115 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 68 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 22:18:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:29,116 INFO L225 Difference]: With dead ends: 141 [2024-11-09 22:18:29,117 INFO L226 Difference]: Without dead ends: 136 [2024-11-09 22:18:29,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3262 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5559, Invalid=10953, Unknown=0, NotChecked=0, Total=16512 [2024-11-09 22:18:29,120 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:29,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:18:29,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-09 22:18:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-09 22:18:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0074074074074073) internal successors, (136), 135 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2024-11-09 22:18:29,135 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 71 [2024-11-09 22:18:29,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:29,135 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2024-11-09 22:18:29,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 68 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2024-11-09 22:18:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-09 22:18:29,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:29,138 INFO L215 NwaCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:29,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 22:18:29,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:29,339 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:29,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash 522143312, now seen corresponding path program 6 times [2024-11-09 22:18:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:29,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852604058] [2024-11-09 22:18:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:29,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:32,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:32,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852604058] [2024-11-09 22:18:32,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852604058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:18:32,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250423915] [2024-11-09 22:18:32,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:18:32,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:32,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:18:32,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:18:32,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 22:18:32,303 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2024-11-09 22:18:32,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:18:32,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-09 22:18:32,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:18:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:32,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:18:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250423915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:18:37,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:18:37,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 132 [2024-11-09 22:18:37,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482285402] [2024-11-09 22:18:37,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:18:37,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-11-09 22:18:37,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-11-09 22:18:37,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6250, Invalid=11042, Unknown=0, NotChecked=0, Total=17292 [2024-11-09 22:18:37,728 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand has 132 states, 132 states have (on average 2.0454545454545454) internal successors, (270), 132 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:52,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:52,204 INFO L93 Difference]: Finished difference Result 269 states and 332 transitions. [2024-11-09 22:18:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-09 22:18:52,205 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.0454545454545454) internal successors, (270), 132 states have internal predecessors, (270), 0 states have call successors, (0), 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 135 [2024-11-09 22:18:52,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:52,207 INFO L225 Difference]: With dead ends: 269 [2024-11-09 22:18:52,207 INFO L226 Difference]: Without dead ends: 264 [2024-11-09 22:18:52,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13678 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=22375, Invalid=43417, Unknown=0, NotChecked=0, Total=65792 [2024-11-09 22:18:52,216 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:52,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:18:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-09 22:18:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-11-09 22:18:52,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.0038022813688212) internal successors, (264), 263 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2024-11-09 22:18:52,239 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 135 [2024-11-09 22:18:52,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:52,240 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2024-11-09 22:18:52,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.0454545454545454) internal successors, (270), 132 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:52,240 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2024-11-09 22:18:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-09 22:18:52,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:52,245 INFO L215 NwaCegarLoop]: trace histogram [128, 127, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:52,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 22:18:52,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:52,446 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:52,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash 56034832, now seen corresponding path program 7 times [2024-11-09 22:18:52,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:52,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693989653] [2024-11-09 22:18:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:52,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:19:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:19:02,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:19:02,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693989653] [2024-11-09 22:19:02,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693989653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:19:02,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098192081] [2024-11-09 22:19:02,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:19:02,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:19:02,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:19:02,059 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:19:02,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 22:19:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:19:03,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-09 22:19:03,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:19:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:19:04,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:19:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:19:23,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098192081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:19:23,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:19:23,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130, 130] total 260 [2024-11-09 22:19:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674788345] [2024-11-09 22:19:23,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:19:23,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 260 states [2024-11-09 22:19:23,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:19:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2024-11-09 22:19:23,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24778, Invalid=42562, Unknown=0, NotChecked=0, Total=67340 [2024-11-09 22:19:23,406 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand has 260 states, 260 states have (on average 2.023076923076923) internal successors, (526), 260 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)