./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label06.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ee2b5babe7331afe701eeca9f9b0daa94765a62f83084cc43a986ae2ceb2b03 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:07:10,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:07:10,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:07:10,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:07:10,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:07:10,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:07:10,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:07:10,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:07:10,883 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:07:10,884 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:07:10,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:07:10,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:07:10,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:07:10,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:07:10,887 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:07:10,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:07:10,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:07:10,888 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:07:10,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:07:10,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:07:10,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:07:10,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:07:10,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:07:10,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:07:10,894 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:07:10,895 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:07:10,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:07:10,895 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:07:10,895 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:07:10,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:07:10,896 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:07:10,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:07:10,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:07:10,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:07:10,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:07:10,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:07:10,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:07:10,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:07:10,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:07:10,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:07:10,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:07:10,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:07:10,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ee2b5babe7331afe701eeca9f9b0daa94765a62f83084cc43a986ae2ceb2b03 [2024-11-16 03:07:11,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:07:11,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:07:11,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:07:11,204 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:07:11,205 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:07:11,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label06.c [2024-11-16 03:07:12,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:07:12,992 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:07:12,994 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label06.c [2024-11-16 03:07:13,019 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b8afc25/8adcf383567e4065acb9ae681d40e807/FLAGeea397b5a [2024-11-16 03:07:13,039 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b8afc25/8adcf383567e4065acb9ae681d40e807 [2024-11-16 03:07:13,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:07:13,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:07:13,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:07:13,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:07:13,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:07:13,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:07:13" (1/1) ... [2024-11-16 03:07:13,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222fd6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:13, skipping insertion in model container [2024-11-16 03:07:13,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:07:13" (1/1) ... [2024-11-16 03:07:13,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:07:13,806 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/eca-rers2012/Problem03_label06.c[57034,57047] [2024-11-16 03:07:13,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:07:13,858 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:07:14,020 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/eca-rers2012/Problem03_label06.c[57034,57047] [2024-11-16 03:07:14,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:07:14,054 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:07:14,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14 WrapperNode [2024-11-16 03:07:14,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:07:14,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:07:14,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:07:14,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:07:14,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,196 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-16 03:07:14,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:07:14,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:07:14,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:07:14,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:07:14,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,216 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,265 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 03:07:14,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,340 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:07:14,364 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:07:14,364 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:07:14,364 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:07:14,365 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (1/1) ... [2024-11-16 03:07:14,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:07:14,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:14,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 03:07:14,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 03:07:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:07:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:07:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:07:14,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:07:14,525 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:07:14,527 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:07:16,365 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-16 03:07:16,365 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:07:16,395 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:07:16,399 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:07:16,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:07:16 BoogieIcfgContainer [2024-11-16 03:07:16,399 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:07:16,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:07:16,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:07:16,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:07:16,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:07:13" (1/3) ... [2024-11-16 03:07:16,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb0b0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:07:16, skipping insertion in model container [2024-11-16 03:07:16,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:14" (2/3) ... [2024-11-16 03:07:16,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb0b0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:07:16, skipping insertion in model container [2024-11-16 03:07:16,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:07:16" (3/3) ... [2024-11-16 03:07:16,410 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label06.c [2024-11-16 03:07:16,431 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:07:16,431 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:07:16,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:07:16,520 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;@562d45ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:07:16,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:07:16,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-16 03:07:16,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:16,544 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:16,545 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:16,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:16,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1418521412, now seen corresponding path program 1 times [2024-11-16 03:07:16,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:16,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813792603] [2024-11-16 03:07:16,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:16,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:17,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:17,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813792603] [2024-11-16 03:07:17,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813792603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:17,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:17,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:17,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083415668] [2024-11-16 03:07:17,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:17,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:17,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:17,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:17,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:17,411 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 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 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:18,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:18,507 INFO L93 Difference]: Finished difference Result 861 states and 1502 transitions. [2024-11-16 03:07:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:18,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2024-11-16 03:07:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:18,523 INFO L225 Difference]: With dead ends: 861 [2024-11-16 03:07:18,523 INFO L226 Difference]: Without dead ends: 463 [2024-11-16 03:07:18,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:18,530 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 127 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:18,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 179 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 03:07:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-16 03:07:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 462. [2024-11-16 03:07:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.5466377440347072) internal successors, (713), 461 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 713 transitions. [2024-11-16 03:07:18,591 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 713 transitions. Word has length 171 [2024-11-16 03:07:18,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:18,592 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 713 transitions. [2024-11-16 03:07:18,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:18,593 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 713 transitions. [2024-11-16 03:07:18,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-16 03:07:18,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:18,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:18,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:07:18,598 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:18,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:18,599 INFO L85 PathProgramCache]: Analyzing trace with hash 615610820, now seen corresponding path program 1 times [2024-11-16 03:07:18,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:18,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789626137] [2024-11-16 03:07:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:18,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:19,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:19,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789626137] [2024-11-16 03:07:19,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789626137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:19,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:19,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016375781] [2024-11-16 03:07:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:19,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:19,064 INFO L87 Difference]: Start difference. First operand 462 states and 713 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:19,373 INFO L93 Difference]: Finished difference Result 1381 states and 2134 transitions. [2024-11-16 03:07:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:19,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2024-11-16 03:07:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:19,385 INFO L225 Difference]: With dead ends: 1381 [2024-11-16 03:07:19,385 INFO L226 Difference]: Without dead ends: 921 [2024-11-16 03:07:19,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:19,389 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 367 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:19,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 600 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:07:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-16 03:07:19,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 918. [2024-11-16 03:07:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 1.5430752453653216) internal successors, (1415), 917 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1415 transitions. [2024-11-16 03:07:19,432 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1415 transitions. Word has length 177 [2024-11-16 03:07:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:19,433 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1415 transitions. [2024-11-16 03:07:19,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1415 transitions. [2024-11-16 03:07:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 03:07:19,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:19,439 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:19,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:07:19,439 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:19,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1196868106, now seen corresponding path program 1 times [2024-11-16 03:07:19,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:19,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313913511] [2024-11-16 03:07:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:19,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:19,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:19,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313913511] [2024-11-16 03:07:19,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313913511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:19,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:19,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:19,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746565217] [2024-11-16 03:07:19,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:19,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:19,681 INFO L87 Difference]: Start difference. First operand 918 states and 1415 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:20,544 INFO L93 Difference]: Finished difference Result 2699 states and 4185 transitions. [2024-11-16 03:07:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:20,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2024-11-16 03:07:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:20,551 INFO L225 Difference]: With dead ends: 2699 [2024-11-16 03:07:20,551 INFO L226 Difference]: Without dead ends: 1783 [2024-11-16 03:07:20,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:20,554 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:20,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 158 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-11-16 03:07:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1747. [2024-11-16 03:07:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 1.5108820160366552) internal successors, (2638), 1746 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2638 transitions. [2024-11-16 03:07:20,601 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2638 transitions. Word has length 180 [2024-11-16 03:07:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:20,601 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2638 transitions. [2024-11-16 03:07:20,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2638 transitions. [2024-11-16 03:07:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-16 03:07:20,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:20,606 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:20,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:07:20,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:20,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1037902043, now seen corresponding path program 1 times [2024-11-16 03:07:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:20,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026038741] [2024-11-16 03:07:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:20,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026038741] [2024-11-16 03:07:20,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026038741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:20,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:20,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:20,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255516908] [2024-11-16 03:07:20,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:20,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:20,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:20,790 INFO L87 Difference]: Start difference. First operand 1747 states and 2638 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:21,165 INFO L93 Difference]: Finished difference Result 5205 states and 7870 transitions. [2024-11-16 03:07:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:21,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 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 186 [2024-11-16 03:07:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:21,177 INFO L225 Difference]: With dead ends: 5205 [2024-11-16 03:07:21,178 INFO L226 Difference]: Without dead ends: 3460 [2024-11-16 03:07:21,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:21,182 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 350 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:21,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 517 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:07:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2024-11-16 03:07:21,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3455. [2024-11-16 03:07:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 3454 states have (on average 1.5049218297625941) internal successors, (5198), 3454 states have internal predecessors, (5198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 5198 transitions. [2024-11-16 03:07:21,290 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 5198 transitions. Word has length 186 [2024-11-16 03:07:21,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:21,290 INFO L471 AbstractCegarLoop]: Abstraction has 3455 states and 5198 transitions. [2024-11-16 03:07:21,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 5198 transitions. [2024-11-16 03:07:21,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-16 03:07:21,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:21,296 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:21,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:07:21,297 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:21,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:21,297 INFO L85 PathProgramCache]: Analyzing trace with hash -774063069, now seen corresponding path program 1 times [2024-11-16 03:07:21,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:21,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412769211] [2024-11-16 03:07:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:21,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:07:21,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:21,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412769211] [2024-11-16 03:07:21,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412769211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:21,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:21,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:21,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106170125] [2024-11-16 03:07:21,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:21,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:21,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:21,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:21,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:21,588 INFO L87 Difference]: Start difference. First operand 3455 states and 5198 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:22,505 INFO L93 Difference]: Finished difference Result 8581 states and 12863 transitions. [2024-11-16 03:07:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:22,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 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 188 [2024-11-16 03:07:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:22,525 INFO L225 Difference]: With dead ends: 8581 [2024-11-16 03:07:22,526 INFO L226 Difference]: Without dead ends: 5128 [2024-11-16 03:07:22,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:22,533 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 234 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:22,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 118 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:22,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5128 states. [2024-11-16 03:07:22,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5128 to 5124. [2024-11-16 03:07:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 5123 states have (on average 1.4708178801483505) internal successors, (7535), 5123 states have internal predecessors, (7535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:22,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 7535 transitions. [2024-11-16 03:07:22,635 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 7535 transitions. Word has length 188 [2024-11-16 03:07:22,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:22,635 INFO L471 AbstractCegarLoop]: Abstraction has 5124 states and 7535 transitions. [2024-11-16 03:07:22,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 7535 transitions. [2024-11-16 03:07:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-16 03:07:22,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:22,643 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:22,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:07:22,644 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:22,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:22,644 INFO L85 PathProgramCache]: Analyzing trace with hash 438282218, now seen corresponding path program 1 times [2024-11-16 03:07:22,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:22,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596604308] [2024-11-16 03:07:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:22,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 03:07:22,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:22,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596604308] [2024-11-16 03:07:22,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596604308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:22,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:22,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:22,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190343635] [2024-11-16 03:07:22,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:22,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:22,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:22,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:22,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:22,919 INFO L87 Difference]: Start difference. First operand 5124 states and 7535 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:23,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:23,800 INFO L93 Difference]: Finished difference Result 15199 states and 22369 transitions. [2024-11-16 03:07:23,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:23,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 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 195 [2024-11-16 03:07:23,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:23,834 INFO L225 Difference]: With dead ends: 15199 [2024-11-16 03:07:23,834 INFO L226 Difference]: Without dead ends: 10077 [2024-11-16 03:07:23,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:23,846 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 239 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:23,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 184 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:23,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10077 states. [2024-11-16 03:07:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10077 to 10065. [2024-11-16 03:07:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10065 states, 10064 states have (on average 1.400039745627981) internal successors, (14090), 10064 states have internal predecessors, (14090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10065 states to 10065 states and 14090 transitions. [2024-11-16 03:07:24,075 INFO L78 Accepts]: Start accepts. Automaton has 10065 states and 14090 transitions. Word has length 195 [2024-11-16 03:07:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:24,075 INFO L471 AbstractCegarLoop]: Abstraction has 10065 states and 14090 transitions. [2024-11-16 03:07:24,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 10065 states and 14090 transitions. [2024-11-16 03:07:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-16 03:07:24,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:24,092 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:24,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:07:24,092 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:24,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1476403306, now seen corresponding path program 1 times [2024-11-16 03:07:24,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:24,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230152632] [2024-11-16 03:07:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:24,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:24,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:24,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230152632] [2024-11-16 03:07:24,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230152632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958857952] [2024-11-16 03:07:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:24,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:24,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:24,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:24,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:07:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:24,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:24,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:24,641 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:24,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:24,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958857952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:24,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:24,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 03:07:24,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770967088] [2024-11-16 03:07:24,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:24,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:24,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:24,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:24,648 INFO L87 Difference]: Start difference. First operand 10065 states and 14090 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:25,614 INFO L93 Difference]: Finished difference Result 29932 states and 41916 transitions. [2024-11-16 03:07:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:25,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-11-16 03:07:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:25,683 INFO L225 Difference]: With dead ends: 29932 [2024-11-16 03:07:25,683 INFO L226 Difference]: Without dead ends: 19869 [2024-11-16 03:07:25,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:25,703 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 235 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:25,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 413 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:25,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19869 states. [2024-11-16 03:07:26,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19869 to 19857. [2024-11-16 03:07:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19857 states, 19856 states have (on average 1.253928283642224) internal successors, (24898), 19856 states have internal predecessors, (24898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19857 states to 19857 states and 24898 transitions. [2024-11-16 03:07:26,084 INFO L78 Accepts]: Start accepts. Automaton has 19857 states and 24898 transitions. Word has length 196 [2024-11-16 03:07:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:26,084 INFO L471 AbstractCegarLoop]: Abstraction has 19857 states and 24898 transitions. [2024-11-16 03:07:26,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 19857 states and 24898 transitions. [2024-11-16 03:07:26,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-16 03:07:26,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:26,102 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:26,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 03:07:26,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:26,304 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:26,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash -682906796, now seen corresponding path program 1 times [2024-11-16 03:07:26,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:26,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309849360] [2024-11-16 03:07:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:26,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:27,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:27,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309849360] [2024-11-16 03:07:27,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309849360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:27,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957509917] [2024-11-16 03:07:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:27,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:27,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:27,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:27,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 03:07:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:27,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:07:27,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:28,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:28,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957509917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:28,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:28,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:07:28,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061424169] [2024-11-16 03:07:28,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:28,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:28,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:28,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:07:28,126 INFO L87 Difference]: Start difference. First operand 19857 states and 24898 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:29,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:29,113 INFO L93 Difference]: Finished difference Result 56736 states and 71101 transitions. [2024-11-16 03:07:29,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:29,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 211 [2024-11-16 03:07:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:29,193 INFO L225 Difference]: With dead ends: 56736 [2024-11-16 03:07:29,194 INFO L226 Difference]: Without dead ends: 36881 [2024-11-16 03:07:29,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:07:29,222 INFO L432 NwaCegarLoop]: 401 mSDtfsCounter, 75 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:29,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 434 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:29,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36881 states. [2024-11-16 03:07:29,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36881 to 36789. [2024-11-16 03:07:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36789 states, 36788 states have (on average 1.2330651299336741) internal successors, (45362), 36788 states have internal predecessors, (45362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36789 states to 36789 states and 45362 transitions. [2024-11-16 03:07:30,022 INFO L78 Accepts]: Start accepts. Automaton has 36789 states and 45362 transitions. Word has length 211 [2024-11-16 03:07:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:30,022 INFO L471 AbstractCegarLoop]: Abstraction has 36789 states and 45362 transitions. [2024-11-16 03:07:30,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 36789 states and 45362 transitions. [2024-11-16 03:07:30,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-16 03:07:30,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:30,055 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:30,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 03:07:30,255 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,SelfDestructingSolverStorable7 [2024-11-16 03:07:30,256 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:30,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:30,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1623716560, now seen corresponding path program 1 times [2024-11-16 03:07:30,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:30,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853768634] [2024-11-16 03:07:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:30,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:30,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:30,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853768634] [2024-11-16 03:07:30,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853768634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:30,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793935810] [2024-11-16 03:07:30,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:30,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:30,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:30,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:30,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 03:07:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:31,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:31,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:31,348 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:31,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793935810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:31,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:31,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:07:31,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500565863] [2024-11-16 03:07:31,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:31,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:31,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:31,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:31,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:31,350 INFO L87 Difference]: Start difference. First operand 36789 states and 45362 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:32,195 INFO L93 Difference]: Finished difference Result 73588 states and 90742 transitions. [2024-11-16 03:07:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:32,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 221 [2024-11-16 03:07:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:32,263 INFO L225 Difference]: With dead ends: 73588 [2024-11-16 03:07:32,263 INFO L226 Difference]: Without dead ends: 36801 [2024-11-16 03:07:32,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:32,308 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 109 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:32,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 103 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:07:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36801 states. [2024-11-16 03:07:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36801 to 36789. [2024-11-16 03:07:32,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36789 states, 36788 states have (on average 1.2251277590518648) internal successors, (45070), 36788 states have internal predecessors, (45070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36789 states to 36789 states and 45070 transitions. [2024-11-16 03:07:33,070 INFO L78 Accepts]: Start accepts. Automaton has 36789 states and 45070 transitions. Word has length 221 [2024-11-16 03:07:33,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:33,071 INFO L471 AbstractCegarLoop]: Abstraction has 36789 states and 45070 transitions. [2024-11-16 03:07:33,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:33,072 INFO L276 IsEmpty]: Start isEmpty. Operand 36789 states and 45070 transitions. [2024-11-16 03:07:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-16 03:07:33,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:33,118 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:33,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 03:07:33,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:33,319 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:33,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:33,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1706253870, now seen corresponding path program 1 times [2024-11-16 03:07:33,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:33,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375027770] [2024-11-16 03:07:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:33,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 98 proven. 7 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-16 03:07:34,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:34,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375027770] [2024-11-16 03:07:34,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375027770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:34,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099857186] [2024-11-16 03:07:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:34,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:34,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:34,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:34,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 03:07:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:34,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:34,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:34,275 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:34,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099857186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:34,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:34,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:07:34,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711386245] [2024-11-16 03:07:34,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:34,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:34,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:34,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:34,278 INFO L87 Difference]: Start difference. First operand 36789 states and 45070 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:35,184 INFO L93 Difference]: Finished difference Result 89092 states and 111266 transitions. [2024-11-16 03:07:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 283 [2024-11-16 03:07:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:35,269 INFO L225 Difference]: With dead ends: 89092 [2024-11-16 03:07:35,269 INFO L226 Difference]: Without dead ends: 52305 [2024-11-16 03:07:35,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:35,309 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 187 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:35,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 169 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:07:35,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52305 states. [2024-11-16 03:07:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52305 to 52293. [2024-11-16 03:07:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52293 states, 52292 states have (on average 1.1913103342767537) internal successors, (62296), 52292 states have internal predecessors, (62296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52293 states to 52293 states and 62296 transitions. [2024-11-16 03:07:36,332 INFO L78 Accepts]: Start accepts. Automaton has 52293 states and 62296 transitions. Word has length 283 [2024-11-16 03:07:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:36,332 INFO L471 AbstractCegarLoop]: Abstraction has 52293 states and 62296 transitions. [2024-11-16 03:07:36,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 52293 states and 62296 transitions. [2024-11-16 03:07:36,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-16 03:07:36,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:36,386 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:36,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 03:07:36,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:36,591 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:36,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:36,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1479982479, now seen corresponding path program 1 times [2024-11-16 03:07:36,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:36,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876138287] [2024-11-16 03:07:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:36,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 104 proven. 7 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-16 03:07:37,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:37,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876138287] [2024-11-16 03:07:37,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876138287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:37,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725246864] [2024-11-16 03:07:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:37,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:37,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:37,973 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:37,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 03:07:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:38,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:38,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 03:07:38,288 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:38,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725246864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:38,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:38,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:07:38,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812051046] [2024-11-16 03:07:38,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:38,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:38,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:38,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:38,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:07:38,290 INFO L87 Difference]: Start difference. First operand 52293 states and 62296 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 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) [2024-11-16 03:07:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:39,357 INFO L93 Difference]: Finished difference Result 144524 states and 172325 transitions. [2024-11-16 03:07:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:39,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 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 294 [2024-11-16 03:07:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:39,489 INFO L225 Difference]: With dead ends: 144524 [2024-11-16 03:07:39,490 INFO L226 Difference]: Without dead ends: 92233 [2024-11-16 03:07:39,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:07:39,552 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 208 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:39,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 191 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:07:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92233 states. [2024-11-16 03:07:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92233 to 92199. [2024-11-16 03:07:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92199 states, 92198 states have (on average 1.1733768628386734) internal successors, (108183), 92198 states have internal predecessors, (108183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92199 states to 92199 states and 108183 transitions. [2024-11-16 03:07:40,847 INFO L78 Accepts]: Start accepts. Automaton has 92199 states and 108183 transitions. Word has length 294 [2024-11-16 03:07:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:40,847 INFO L471 AbstractCegarLoop]: Abstraction has 92199 states and 108183 transitions. [2024-11-16 03:07:40,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 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) [2024-11-16 03:07:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 92199 states and 108183 transitions. [2024-11-16 03:07:41,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-16 03:07:41,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:41,234 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:41,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 03:07:41,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 03:07:41,435 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:41,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:41,435 INFO L85 PathProgramCache]: Analyzing trace with hash -802144350, now seen corresponding path program 1 times [2024-11-16 03:07:41,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:41,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895666301] [2024-11-16 03:07:41,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:41,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 158 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:42,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:42,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895666301] [2024-11-16 03:07:42,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895666301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:42,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457490748] [2024-11-16 03:07:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:42,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:42,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:42,064 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:42,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 03:07:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:42,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:07:42,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:42,354 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:42,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457490748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:42,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:42,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:07:42,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238478841] [2024-11-16 03:07:42,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:42,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:42,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:42,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:42,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:42,357 INFO L87 Difference]: Start difference. First operand 92199 states and 108183 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:43,498 INFO L93 Difference]: Finished difference Result 174733 states and 204699 transitions. [2024-11-16 03:07:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 330 [2024-11-16 03:07:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:43,501 INFO L225 Difference]: With dead ends: 174733 [2024-11-16 03:07:43,501 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 03:07:43,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:43,758 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 223 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:43,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 371 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:07:43,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 03:07:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 03:07:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 03:07:43,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 330 [2024-11-16 03:07:43,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:43,760 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 03:07:43,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:43,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 03:07:43,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 03:07:43,763 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 03:07:43,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 03:07:43,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:43,967 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:43,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 03:07:52,497 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 03:07:52,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:07:52 BoogieIcfgContainer [2024-11-16 03:07:52,510 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 03:07:52,511 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 03:07:52,511 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 03:07:52,511 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 03:07:52,511 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:07:16" (3/4) ... [2024-11-16 03:07:52,519 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 03:07:52,562 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-16 03:07:52,564 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 03:07:52,566 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 03:07:52,569 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 03:07:52,792 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 03:07:52,792 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 03:07:52,792 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 03:07:52,793 INFO L158 Benchmark]: Toolchain (without parser) took 39748.16ms. Allocated memory was 153.1MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 77.8MB in the beginning and 8.3GB in the end (delta: -8.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-16 03:07:52,793 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 03:07:52,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1009.45ms. Allocated memory is still 153.1MB. Free memory was 77.6MB in the beginning and 73.5MB in the end (delta: 4.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-16 03:07:52,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 140.74ms. Allocated memory is still 153.1MB. Free memory was 73.5MB in the beginning and 58.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-16 03:07:52,793 INFO L158 Benchmark]: Boogie Preprocessor took 165.46ms. Allocated memory is still 153.1MB. Free memory was 58.2MB in the beginning and 109.7MB in the end (delta: -51.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-16 03:07:52,795 INFO L158 Benchmark]: IcfgBuilder took 2035.70ms. Allocated memory was 153.1MB in the beginning and 239.1MB in the end (delta: 86.0MB). Free memory was 109.7MB in the beginning and 179.3MB in the end (delta: -69.6MB). Peak memory consumption was 102.1MB. Max. memory is 16.1GB. [2024-11-16 03:07:52,795 INFO L158 Benchmark]: TraceAbstraction took 36108.88ms. Allocated memory was 239.1MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 179.3MB in the beginning and 8.4GB in the end (delta: -8.2GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-11-16 03:07:52,795 INFO L158 Benchmark]: Witness Printer took 281.48ms. Allocated memory is still 9.5GB. Free memory was 8.4GB in the beginning and 8.3GB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-16 03:07:52,797 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1009.45ms. Allocated memory is still 153.1MB. Free memory was 77.6MB in the beginning and 73.5MB in the end (delta: 4.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 140.74ms. Allocated memory is still 153.1MB. Free memory was 73.5MB in the beginning and 58.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 165.46ms. Allocated memory is still 153.1MB. Free memory was 58.2MB in the beginning and 109.7MB in the end (delta: -51.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * IcfgBuilder took 2035.70ms. Allocated memory was 153.1MB in the beginning and 239.1MB in the end (delta: 86.0MB). Free memory was 109.7MB in the beginning and 179.3MB in the end (delta: -69.6MB). Peak memory consumption was 102.1MB. Max. memory is 16.1GB. * TraceAbstraction took 36108.88ms. Allocated memory was 239.1MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 179.3MB in the beginning and 8.4GB in the end (delta: -8.2GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 281.48ms. Allocated memory is still 9.5GB. Free memory was 8.4GB in the beginning and 8.3GB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1552]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 305 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.5s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.6s, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2590 SdHoareTripleChecker+Valid, 8.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2590 mSDsluCounter, 3437 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 812 mSDsCounter, 1414 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6291 IncrementalHoareTripleChecker+Invalid, 7705 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1414 mSolverCounterUnsat, 2625 mSDtfsCounter, 6291 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1562 GetRequests, 1536 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92199occurred in iteration=11, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 223 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 4167 NumberOfCodeBlocks, 4167 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 4149 ConstructedInterpolants, 0 QuantifiedInterpolants, 10081 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2872 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 1465/1568 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1668]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-16 03:07:52,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE