./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label29.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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_label29.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 372b0f8557f493ed9d29c5f8057b8dc54ad330866696fd4878e863a88379edbf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:40:58,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:40:58,672 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:40:58,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:40:58,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:40:58,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:40:58,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:40:58,713 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:40:58,714 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:40:58,715 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:40:58,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:40:58,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:40:58,716 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:40:58,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:40:58,719 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:40:58,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:40:58,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:40:58,720 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:40:58,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:40:58,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:40:58,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:40:58,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:40:58,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:40:58,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:40:58,722 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:40:58,722 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:40:58,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:40:58,723 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:40:58,723 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:40:58,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:40:58,724 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:40:58,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:40:58,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:40:58,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:40:58,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:40:58,725 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:40:58,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:40:58,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:40:58,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:40:58,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:40:58,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:40:58,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:40:58,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 372b0f8557f493ed9d29c5f8057b8dc54ad330866696fd4878e863a88379edbf [2024-11-18 09:40:59,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:40:59,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:40:59,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:40:59,052 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:40:59,053 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:40:59,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2024-11-18 09:41:00,563 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:41:00,935 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:41:00,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2024-11-18 09:41:00,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ccc4834/ee082638c163491bb95050911b3a1530/FLAG053de104b [2024-11-18 09:41:00,977 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ccc4834/ee082638c163491bb95050911b3a1530 [2024-11-18 09:41:00,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:41:00,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:41:00,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:41:00,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:41:00,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:41:00,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:41:00" (1/1) ... [2024-11-18 09:41:00,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df48c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:00, skipping insertion in model container [2024-11-18 09:41:00,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:41:00" (1/1) ... [2024-11-18 09:41:01,063 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:41:01,618 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_label29.c[58258,58271] [2024-11-18 09:41:01,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:41:01,665 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:41:01,830 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_label29.c[58258,58271] [2024-11-18 09:41:01,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:41:01,861 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:41:01,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01 WrapperNode [2024-11-18 09:41:01,862 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:41:01,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:41:01,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:41:01,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:41:01,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:01,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,011 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-18 09:41:02,012 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:41:02,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:41:02,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:41:02,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:41:02,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,077 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]. [2024-11-18 09:41:02,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:41:02,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:41:02,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:41:02,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:41:02,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (1/1) ... [2024-11-18 09:41:02,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:41:02,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:02,239 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) [2024-11-18 09:41:02,246 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 [2024-11-18 09:41:02,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:41:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:41:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:41:02,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:41:02,379 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:41:02,381 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:41:04,260 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-18 09:41:04,261 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:41:04,288 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:41:04,288 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 09:41:04,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:41:04 BoogieIcfgContainer [2024-11-18 09:41:04,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:41:04,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:41:04,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:41:04,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:41:04,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:41:00" (1/3) ... [2024-11-18 09:41:04,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ffae9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:41:04, skipping insertion in model container [2024-11-18 09:41:04,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:01" (2/3) ... [2024-11-18 09:41:04,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ffae9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:41:04, skipping insertion in model container [2024-11-18 09:41:04,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:41:04" (3/3) ... [2024-11-18 09:41:04,300 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label29.c [2024-11-18 09:41:04,316 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:41:04,316 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:41:04,417 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:41:04,428 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;@1d2e1b1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:41:04,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:41:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 09:41:04,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:04,458 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:04,458 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:04,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:04,464 INFO L85 PathProgramCache]: Analyzing trace with hash 800753066, now seen corresponding path program 1 times [2024-11-18 09:41:04,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:04,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895067812] [2024-11-18 09:41:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:04,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:41:05,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:05,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895067812] [2024-11-18 09:41:05,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895067812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264048114] [2024-11-18 09:41:05,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:05,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:05,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:05,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:05,569 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:06,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:06,665 INFO L93 Difference]: Finished difference Result 823 states and 1459 transitions. [2024-11-18 09:41:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:06,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2024-11-18 09:41:06,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:06,690 INFO L225 Difference]: With dead ends: 823 [2024-11-18 09:41:06,690 INFO L226 Difference]: Without dead ends: 444 [2024-11-18 09:41:06,696 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 [2024-11-18 09:41:06,702 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 53 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:06,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 244 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 09:41:06,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-18 09:41:06,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 443. [2024-11-18 09:41:06,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.420814479638009) internal successors, (628), 442 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 628 transitions. [2024-11-18 09:41:06,762 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 628 transitions. Word has length 178 [2024-11-18 09:41:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:06,764 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 628 transitions. [2024-11-18 09:41:06,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:06,765 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 628 transitions. [2024-11-18 09:41:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-18 09:41:06,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:06,770 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:06,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:41:06,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:06,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash -726821495, now seen corresponding path program 1 times [2024-11-18 09:41:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:06,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904075559] [2024-11-18 09:41:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:41:07,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:07,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904075559] [2024-11-18 09:41:07,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904075559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:07,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:07,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:07,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709624769] [2024-11-18 09:41:07,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:07,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:07,095 INFO L87 Difference]: Start difference. First operand 443 states and 628 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) [2024-11-18 09:41:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:07,895 INFO L93 Difference]: Finished difference Result 1310 states and 1864 transitions. [2024-11-18 09:41:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:07,895 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 [2024-11-18 09:41:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:07,900 INFO L225 Difference]: With dead ends: 1310 [2024-11-18 09:41:07,900 INFO L226 Difference]: Without dead ends: 869 [2024-11-18 09:41:07,902 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 [2024-11-18 09:41:07,903 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:07,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:07,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-11-18 09:41:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 855. [2024-11-18 09:41:07,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3864168618266979) internal successors, (1184), 854 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:07,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1184 transitions. [2024-11-18 09:41:07,947 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1184 transitions. Word has length 186 [2024-11-18 09:41:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:07,947 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1184 transitions. [2024-11-18 09:41:07,948 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) [2024-11-18 09:41:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1184 transitions. [2024-11-18 09:41:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-18 09:41:07,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:07,953 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:07,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:41:07,953 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:07,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1639909094, now seen corresponding path program 1 times [2024-11-18 09:41:07,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:07,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622807533] [2024-11-18 09:41:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:07,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:41:08,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:08,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622807533] [2024-11-18 09:41:08,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622807533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:08,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:08,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:08,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344750766] [2024-11-18 09:41:08,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:08,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:08,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:08,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:08,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:08,251 INFO L87 Difference]: Start difference. First operand 855 states and 1184 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:09,038 INFO L93 Difference]: Finished difference Result 2539 states and 3516 transitions. [2024-11-18 09:41:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:09,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2024-11-18 09:41:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:09,048 INFO L225 Difference]: With dead ends: 2539 [2024-11-18 09:41:09,048 INFO L226 Difference]: Without dead ends: 1686 [2024-11-18 09:41:09,051 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 [2024-11-18 09:41:09,053 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 243 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:09,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 222 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:09,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2024-11-18 09:41:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1682. [2024-11-18 09:41:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1681 states have (on average 1.3248066627007733) internal successors, (2227), 1681 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2227 transitions. [2024-11-18 09:41:09,122 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2227 transitions. Word has length 191 [2024-11-18 09:41:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:09,123 INFO L471 AbstractCegarLoop]: Abstraction has 1682 states and 2227 transitions. [2024-11-18 09:41:09,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2227 transitions. [2024-11-18 09:41:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-18 09:41:09,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:09,128 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:09,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:41:09,129 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:09,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:09,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1294418448, now seen corresponding path program 1 times [2024-11-18 09:41:09,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:09,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243869477] [2024-11-18 09:41:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:09,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:41:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243869477] [2024-11-18 09:41:09,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243869477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:09,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:09,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:09,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847689435] [2024-11-18 09:41:09,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:09,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:09,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:09,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:09,416 INFO L87 Difference]: Start difference. First operand 1682 states and 2227 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:10,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:10,263 INFO L93 Difference]: Finished difference Result 4178 states and 5696 transitions. [2024-11-18 09:41:10,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:10,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 198 [2024-11-18 09:41:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:10,273 INFO L225 Difference]: With dead ends: 4178 [2024-11-18 09:41:10,274 INFO L226 Difference]: Without dead ends: 2498 [2024-11-18 09:41:10,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:10,281 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 236 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:10,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 401 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:10,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2024-11-18 09:41:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2496. [2024-11-18 09:41:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.2681362725450902) internal successors, (3164), 2495 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3164 transitions. [2024-11-18 09:41:10,339 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3164 transitions. Word has length 198 [2024-11-18 09:41:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:10,340 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 3164 transitions. [2024-11-18 09:41:10,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3164 transitions. [2024-11-18 09:41:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 09:41:10,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:10,346 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:10,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 09:41:10,347 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:10,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash -225463204, now seen corresponding path program 1 times [2024-11-18 09:41:10,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:10,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463003400] [2024-11-18 09:41:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:10,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:41:10,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463003400] [2024-11-18 09:41:10,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463003400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:10,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414234798] [2024-11-18 09:41:10,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:10,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:10,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:10,841 INFO L87 Difference]: Start difference. First operand 2496 states and 3164 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:11,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:11,659 INFO L93 Difference]: Finished difference Result 6217 states and 7859 transitions. [2024-11-18 09:41:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:11,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 206 [2024-11-18 09:41:11,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:11,672 INFO L225 Difference]: With dead ends: 6217 [2024-11-18 09:41:11,673 INFO L226 Difference]: Without dead ends: 3723 [2024-11-18 09:41:11,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:11,679 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:11,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 380 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:11,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2024-11-18 09:41:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3715. [2024-11-18 09:41:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 3714 states have (on average 1.2242864835756597) internal successors, (4547), 3714 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 4547 transitions. [2024-11-18 09:41:11,787 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 4547 transitions. Word has length 206 [2024-11-18 09:41:11,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:11,787 INFO L471 AbstractCegarLoop]: Abstraction has 3715 states and 4547 transitions. [2024-11-18 09:41:11,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:11,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 4547 transitions. [2024-11-18 09:41:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-18 09:41:11,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:11,798 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:11,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 09:41:11,799 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:11,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash 409707928, now seen corresponding path program 1 times [2024-11-18 09:41:11,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:11,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082718157] [2024-11-18 09:41:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:11,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:41:12,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082718157] [2024-11-18 09:41:12,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082718157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:12,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:12,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:12,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149298995] [2024-11-18 09:41:12,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:12,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:12,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:12,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:12,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:12,149 INFO L87 Difference]: Start difference. First operand 3715 states and 4547 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:13,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:13,052 INFO L93 Difference]: Finished difference Result 9470 states and 11742 transitions. [2024-11-18 09:41:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:13,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 213 [2024-11-18 09:41:13,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:13,074 INFO L225 Difference]: With dead ends: 9470 [2024-11-18 09:41:13,075 INFO L226 Difference]: Without dead ends: 5757 [2024-11-18 09:41:13,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:13,082 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:13,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 390 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2024-11-18 09:41:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 5550. [2024-11-18 09:41:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5550 states, 5549 states have (on average 1.2094071003784466) internal successors, (6711), 5549 states have internal predecessors, (6711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5550 states to 5550 states and 6711 transitions. [2024-11-18 09:41:13,195 INFO L78 Accepts]: Start accepts. Automaton has 5550 states and 6711 transitions. Word has length 213 [2024-11-18 09:41:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:13,197 INFO L471 AbstractCegarLoop]: Abstraction has 5550 states and 6711 transitions. [2024-11-18 09:41:13,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:13,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5550 states and 6711 transitions. [2024-11-18 09:41:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 09:41:13,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:13,209 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:13,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 09:41:13,209 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:13,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:13,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1735843397, now seen corresponding path program 1 times [2024-11-18 09:41:13,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:13,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796360098] [2024-11-18 09:41:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:13,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 09:41:13,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:13,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796360098] [2024-11-18 09:41:13,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796360098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:13,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:13,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:13,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452711346] [2024-11-18 09:41:13,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:13,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:13,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:13,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:13,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:13,419 INFO L87 Difference]: Start difference. First operand 5550 states and 6711 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:14,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:14,354 INFO L93 Difference]: Finished difference Result 16391 states and 19793 transitions. [2024-11-18 09:41:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:14,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 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 [2024-11-18 09:41:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:14,387 INFO L225 Difference]: With dead ends: 16391 [2024-11-18 09:41:14,388 INFO L226 Difference]: Without dead ends: 10843 [2024-11-18 09:41:14,396 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 [2024-11-18 09:41:14,399 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 234 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:14,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 211 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10843 states. [2024-11-18 09:41:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10843 to 10840. [2024-11-18 09:41:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10840 states, 10839 states have (on average 1.1777839284066796) internal successors, (12766), 10839 states have internal predecessors, (12766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:14,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10840 states to 10840 states and 12766 transitions. [2024-11-18 09:41:14,599 INFO L78 Accepts]: Start accepts. Automaton has 10840 states and 12766 transitions. Word has length 221 [2024-11-18 09:41:14,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:14,600 INFO L471 AbstractCegarLoop]: Abstraction has 10840 states and 12766 transitions. [2024-11-18 09:41:14,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:14,600 INFO L276 IsEmpty]: Start isEmpty. Operand 10840 states and 12766 transitions. [2024-11-18 09:41:14,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:41:14,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:14,616 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:14,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 09:41:14,616 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:14,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:14,617 INFO L85 PathProgramCache]: Analyzing trace with hash -963709385, now seen corresponding path program 1 times [2024-11-18 09:41:14,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:14,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78531100] [2024-11-18 09:41:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:14,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:41:14,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:14,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78531100] [2024-11-18 09:41:14,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78531100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:14,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:14,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:14,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392946398] [2024-11-18 09:41:14,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:14,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:41:14,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:14,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:41:14,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:41:14,999 INFO L87 Difference]: Start difference. First operand 10840 states and 12766 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:16,400 INFO L93 Difference]: Finished difference Result 21704 states and 25581 transitions. [2024-11-18 09:41:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:41:16,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2024-11-18 09:41:16,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:16,438 INFO L225 Difference]: With dead ends: 21704 [2024-11-18 09:41:16,438 INFO L226 Difference]: Without dead ends: 10866 [2024-11-18 09:41:16,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:41:16,454 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 405 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:16,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 237 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 09:41:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10866 states. [2024-11-18 09:41:16,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10866 to 10231. [2024-11-18 09:41:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10231 states, 10230 states have (on average 1.180058651026393) internal successors, (12072), 10230 states have internal predecessors, (12072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10231 states to 10231 states and 12072 transitions. [2024-11-18 09:41:16,683 INFO L78 Accepts]: Start accepts. Automaton has 10231 states and 12072 transitions. Word has length 222 [2024-11-18 09:41:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:16,683 INFO L471 AbstractCegarLoop]: Abstraction has 10231 states and 12072 transitions. [2024-11-18 09:41:16,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 10231 states and 12072 transitions. [2024-11-18 09:41:16,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-18 09:41:16,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:16,701 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:16,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 09:41:16,701 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:16,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash 637188002, now seen corresponding path program 1 times [2024-11-18 09:41:16,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:16,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853296386] [2024-11-18 09:41:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:16,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 09:41:17,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:17,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853296386] [2024-11-18 09:41:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853296386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:17,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758864041] [2024-11-18 09:41:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:17,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:17,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:17,153 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) [2024-11-18 09:41:17,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:41:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:17,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:41:17,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 09:41:17,641 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:17,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758864041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:17,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:17,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:17,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408878995] [2024-11-18 09:41:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:17,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:17,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:17,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:17,647 INFO L87 Difference]: Start difference. First operand 10231 states and 12072 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:18,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:18,361 INFO L93 Difference]: Finished difference Result 24952 states and 29741 transitions. [2024-11-18 09:41:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:18,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 229 [2024-11-18 09:41:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:18,395 INFO L225 Difference]: With dead ends: 24952 [2024-11-18 09:41:18,396 INFO L226 Difference]: Without dead ends: 14723 [2024-11-18 09:41:18,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:18,412 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 67 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:18,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 164 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:41:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14723 states. [2024-11-18 09:41:18,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14723 to 13891. [2024-11-18 09:41:18,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13891 states, 13890 states have (on average 1.19812814974802) internal successors, (16642), 13890 states have internal predecessors, (16642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13891 states to 13891 states and 16642 transitions. [2024-11-18 09:41:18,640 INFO L78 Accepts]: Start accepts. Automaton has 13891 states and 16642 transitions. Word has length 229 [2024-11-18 09:41:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:18,642 INFO L471 AbstractCegarLoop]: Abstraction has 13891 states and 16642 transitions. [2024-11-18 09:41:18,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 13891 states and 16642 transitions. [2024-11-18 09:41:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-18 09:41:18,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:18,663 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:18,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 09:41:18,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:18,864 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:18,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2089717992, now seen corresponding path program 1 times [2024-11-18 09:41:18,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:18,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942264134] [2024-11-18 09:41:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:18,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 09:41:19,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942264134] [2024-11-18 09:41:19,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942264134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:19,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:19,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119902339] [2024-11-18 09:41:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:19,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:41:19,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:41:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:41:19,193 INFO L87 Difference]: Start difference. First operand 13891 states and 16642 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:20,043 INFO L93 Difference]: Finished difference Result 25904 states and 31126 transitions. [2024-11-18 09:41:20,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:41:20,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-11-18 09:41:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:20,065 INFO L225 Difference]: With dead ends: 25904 [2024-11-18 09:41:20,065 INFO L226 Difference]: Without dead ends: 12015 [2024-11-18 09:41:20,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:41:20,081 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 463 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:20,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 55 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:41:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12015 states. [2024-11-18 09:41:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12015 to 12015. [2024-11-18 09:41:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12015 states, 12014 states have (on average 1.140086565673381) internal successors, (13697), 12014 states have internal predecessors, (13697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12015 states to 12015 states and 13697 transitions. [2024-11-18 09:41:20,238 INFO L78 Accepts]: Start accepts. Automaton has 12015 states and 13697 transitions. Word has length 257 [2024-11-18 09:41:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:20,238 INFO L471 AbstractCegarLoop]: Abstraction has 12015 states and 13697 transitions. [2024-11-18 09:41:20,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 12015 states and 13697 transitions. [2024-11-18 09:41:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-18 09:41:20,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:20,256 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-11-18 09:41:20,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 09:41:20,257 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:20,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1480847212, now seen corresponding path program 1 times [2024-11-18 09:41:20,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:20,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894036872] [2024-11-18 09:41:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:20,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-18 09:41:20,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:20,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894036872] [2024-11-18 09:41:20,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894036872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:20,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:20,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:20,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031912014] [2024-11-18 09:41:20,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:20,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:20,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:20,621 INFO L87 Difference]: Start difference. First operand 12015 states and 13697 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:21,354 INFO L93 Difference]: Finished difference Result 30134 states and 34280 transitions. [2024-11-18 09:41:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 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 279 [2024-11-18 09:41:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:21,389 INFO L225 Difference]: With dead ends: 30134 [2024-11-18 09:41:21,389 INFO L226 Difference]: Without dead ends: 18121 [2024-11-18 09:41:21,405 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 [2024-11-18 09:41:21,406 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 203 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:21,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 147 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:41:21,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18121 states. [2024-11-18 09:41:21,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18121 to 18120. [2024-11-18 09:41:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18120 states, 18119 states have (on average 1.133727026877863) internal successors, (20542), 18119 states have internal predecessors, (20542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18120 states to 18120 states and 20542 transitions. [2024-11-18 09:41:21,705 INFO L78 Accepts]: Start accepts. Automaton has 18120 states and 20542 transitions. Word has length 279 [2024-11-18 09:41:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:21,705 INFO L471 AbstractCegarLoop]: Abstraction has 18120 states and 20542 transitions. [2024-11-18 09:41:21,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand 18120 states and 20542 transitions. [2024-11-18 09:41:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-18 09:41:21,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:21,729 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-11-18 09:41:21,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 09:41:21,729 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:21,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:21,730 INFO L85 PathProgramCache]: Analyzing trace with hash 683669601, now seen corresponding path program 1 times [2024-11-18 09:41:21,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:21,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334903986] [2024-11-18 09:41:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:21,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 107 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-18 09:41:22,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:22,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334903986] [2024-11-18 09:41:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334903986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:22,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531894896] [2024-11-18 09:41:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:22,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:22,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:22,213 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) [2024-11-18 09:41:22,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:41:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:22,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:41:22,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 09:41:22,445 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:22,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531894896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:22,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:22,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:22,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011492803] [2024-11-18 09:41:22,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:22,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:22,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:22,448 INFO L87 Difference]: Start difference. First operand 18120 states and 20542 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:23,172 INFO L93 Difference]: Finished difference Result 41520 states and 47544 transitions. [2024-11-18 09:41:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:23,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 286 [2024-11-18 09:41:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:23,215 INFO L225 Difference]: With dead ends: 41520 [2024-11-18 09:41:23,216 INFO L226 Difference]: Without dead ends: 23402 [2024-11-18 09:41:23,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:23,234 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 218 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:23,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 134 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:41:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23402 states. [2024-11-18 09:41:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23402 to 22992. [2024-11-18 09:41:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22992 states, 22991 states have (on average 1.114175112000348) internal successors, (25616), 22991 states have internal predecessors, (25616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22992 states to 22992 states and 25616 transitions. [2024-11-18 09:41:23,518 INFO L78 Accepts]: Start accepts. Automaton has 22992 states and 25616 transitions. Word has length 286 [2024-11-18 09:41:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:23,518 INFO L471 AbstractCegarLoop]: Abstraction has 22992 states and 25616 transitions. [2024-11-18 09:41:23,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:23,519 INFO L276 IsEmpty]: Start isEmpty. Operand 22992 states and 25616 transitions. [2024-11-18 09:41:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-18 09:41:23,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:23,543 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-18 09:41:23,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:41:23,743 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,SelfDestructingSolverStorable11 [2024-11-18 09:41:23,744 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:23,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash -115023720, now seen corresponding path program 1 times [2024-11-18 09:41:23,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:23,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376523763] [2024-11-18 09:41:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:23,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 09:41:24,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376523763] [2024-11-18 09:41:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376523763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:24,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:24,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:24,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415060513] [2024-11-18 09:41:24,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:24,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:41:24,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:24,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:41:24,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:41:24,165 INFO L87 Difference]: Start difference. First operand 22992 states and 25616 transitions. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:25,226 INFO L93 Difference]: Finished difference Result 52087 states and 58331 transitions. [2024-11-18 09:41:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:41:25,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 306 [2024-11-18 09:41:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:25,271 INFO L225 Difference]: With dead ends: 52087 [2024-11-18 09:41:25,271 INFO L226 Difference]: Without dead ends: 29097 [2024-11-18 09:41:25,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:41:25,298 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 362 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:25,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 93 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 09:41:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29097 states. [2024-11-18 09:41:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29097 to 26041. [2024-11-18 09:41:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26041 states, 26040 states have (on average 1.1178571428571429) internal successors, (29109), 26040 states have internal predecessors, (29109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26041 states to 26041 states and 29109 transitions. [2024-11-18 09:41:25,741 INFO L78 Accepts]: Start accepts. Automaton has 26041 states and 29109 transitions. Word has length 306 [2024-11-18 09:41:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:25,741 INFO L471 AbstractCegarLoop]: Abstraction has 26041 states and 29109 transitions. [2024-11-18 09:41:25,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 26041 states and 29109 transitions. [2024-11-18 09:41:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-18 09:41:25,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:25,764 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 09:41:25,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 09:41:25,765 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:25,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1250760408, now seen corresponding path program 1 times [2024-11-18 09:41:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:25,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819863985] [2024-11-18 09:41:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 09:41:26,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:26,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819863985] [2024-11-18 09:41:26,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819863985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:26,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992041108] [2024-11-18 09:41:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:26,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:26,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:26,119 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) [2024-11-18 09:41:26,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:41:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:26,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:41:26,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 09:41:26,657 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:26,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992041108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:26,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:26,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:26,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829982825] [2024-11-18 09:41:26,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:26,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:26,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:26,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:26,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:26,660 INFO L87 Difference]: Start difference. First operand 26041 states and 29109 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:27,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:27,339 INFO L93 Difference]: Finished difference Result 52084 states and 58222 transitions. [2024-11-18 09:41:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:27,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 312 [2024-11-18 09:41:27,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:27,385 INFO L225 Difference]: With dead ends: 52084 [2024-11-18 09:41:27,385 INFO L226 Difference]: Without dead ends: 26045 [2024-11-18 09:41:27,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:27,412 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 85 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:27,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 287 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:41:27,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26045 states. [2024-11-18 09:41:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26045 to 26041. [2024-11-18 09:41:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26041 states, 26040 states have (on average 1.1134792626728112) internal successors, (28995), 26040 states have internal predecessors, (28995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:27,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26041 states to 26041 states and 28995 transitions. [2024-11-18 09:41:27,808 INFO L78 Accepts]: Start accepts. Automaton has 26041 states and 28995 transitions. Word has length 312 [2024-11-18 09:41:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:27,809 INFO L471 AbstractCegarLoop]: Abstraction has 26041 states and 28995 transitions. [2024-11-18 09:41:27,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:27,810 INFO L276 IsEmpty]: Start isEmpty. Operand 26041 states and 28995 transitions. [2024-11-18 09:41:27,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-18 09:41:27,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:27,841 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:27,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:41:28,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:28,042 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:28,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:28,042 INFO L85 PathProgramCache]: Analyzing trace with hash 977806869, now seen corresponding path program 1 times [2024-11-18 09:41:28,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:28,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088965139] [2024-11-18 09:41:28,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:28,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-18 09:41:28,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088965139] [2024-11-18 09:41:28,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088965139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:28,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989984861] [2024-11-18 09:41:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:28,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:28,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:28,401 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) [2024-11-18 09:41:28,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:41:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:28,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:41:28,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-18 09:41:28,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:28,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989984861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:28,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:28,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:28,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507516828] [2024-11-18 09:41:28,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:28,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:28,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:28,983 INFO L87 Difference]: Start difference. First operand 26041 states and 28995 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:29,606 INFO L93 Difference]: Finished difference Result 52084 states and 57994 transitions. [2024-11-18 09:41:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:29,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 358 [2024-11-18 09:41:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:29,641 INFO L225 Difference]: With dead ends: 52084 [2024-11-18 09:41:29,642 INFO L226 Difference]: Without dead ends: 26045 [2024-11-18 09:41:29,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:29,665 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 89 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:29,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 56 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:41:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26045 states. [2024-11-18 09:41:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26045 to 26041. [2024-11-18 09:41:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26041 states, 26040 states have (on average 1.1130952380952381) internal successors, (28985), 26040 states have internal predecessors, (28985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:29,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26041 states to 26041 states and 28985 transitions. [2024-11-18 09:41:29,978 INFO L78 Accepts]: Start accepts. Automaton has 26041 states and 28985 transitions. Word has length 358 [2024-11-18 09:41:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:29,979 INFO L471 AbstractCegarLoop]: Abstraction has 26041 states and 28985 transitions. [2024-11-18 09:41:29,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:29,979 INFO L276 IsEmpty]: Start isEmpty. Operand 26041 states and 28985 transitions. [2024-11-18 09:41:30,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-18 09:41:30,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:30,003 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:30,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:41:30,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 09:41:30,204 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:30,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:30,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1604563319, now seen corresponding path program 1 times [2024-11-18 09:41:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:30,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190231338] [2024-11-18 09:41:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:30,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-18 09:41:30,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:30,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190231338] [2024-11-18 09:41:30,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190231338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:30,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444788689] [2024-11-18 09:41:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:30,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:30,619 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) [2024-11-18 09:41:30,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:41:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:30,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:41:30,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 09:41:30,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:30,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444788689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:30,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:30,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:30,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016477351] [2024-11-18 09:41:30,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:30,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:30,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:30,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:30,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:30,931 INFO L87 Difference]: Start difference. First operand 26041 states and 28985 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:31,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:31,575 INFO L93 Difference]: Finished difference Result 54321 states and 60569 transitions. [2024-11-18 09:41:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:31,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 365 [2024-11-18 09:41:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:31,602 INFO L225 Difference]: With dead ends: 54321 [2024-11-18 09:41:31,602 INFO L226 Difference]: Without dead ends: 28282 [2024-11-18 09:41:31,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:31,621 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 164 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:31,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 359 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:41:31,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28282 states. [2024-11-18 09:41:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28282 to 27465. [2024-11-18 09:41:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27465 states, 27464 states have (on average 1.115751529274687) internal successors, (30643), 27464 states have internal predecessors, (30643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:31,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27465 states to 27465 states and 30643 transitions. [2024-11-18 09:41:31,887 INFO L78 Accepts]: Start accepts. Automaton has 27465 states and 30643 transitions. Word has length 365 [2024-11-18 09:41:31,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:31,888 INFO L471 AbstractCegarLoop]: Abstraction has 27465 states and 30643 transitions. [2024-11-18 09:41:31,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 27465 states and 30643 transitions. [2024-11-18 09:41:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-18 09:41:31,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:31,914 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2024-11-18 09:41:31,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:41:32,114 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,SelfDestructingSolverStorable15 [2024-11-18 09:41:32,115 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:32,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:32,116 INFO L85 PathProgramCache]: Analyzing trace with hash -597140025, now seen corresponding path program 1 times [2024-11-18 09:41:32,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:32,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292837146] [2024-11-18 09:41:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:32,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-18 09:41:32,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:32,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292837146] [2024-11-18 09:41:32,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292837146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:32,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440448525] [2024-11-18 09:41:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:32,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:32,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:32,569 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) [2024-11-18 09:41:32,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:41:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:32,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:41:32,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-18 09:41:32,900 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:32,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440448525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:32,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:32,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:32,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975100543] [2024-11-18 09:41:32,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:32,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:41:32,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:32,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:41:32,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:41:32,904 INFO L87 Difference]: Start difference. First operand 27465 states and 30643 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:33,742 INFO L93 Difference]: Finished difference Result 73841 states and 82581 transitions. [2024-11-18 09:41:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:41:33,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 369 [2024-11-18 09:41:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:33,809 INFO L225 Difference]: With dead ends: 73841 [2024-11-18 09:41:33,810 INFO L226 Difference]: Without dead ends: 46378 [2024-11-18 09:41:33,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:41:33,840 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 525 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:33,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 310 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:41:33,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46378 states. [2024-11-18 09:41:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46378 to 43733. [2024-11-18 09:41:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43733 states, 43732 states have (on average 1.1205981889691758) internal successors, (49006), 43732 states have internal predecessors, (49006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43733 states to 43733 states and 49006 transitions. [2024-11-18 09:41:34,562 INFO L78 Accepts]: Start accepts. Automaton has 43733 states and 49006 transitions. Word has length 369 [2024-11-18 09:41:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:34,563 INFO L471 AbstractCegarLoop]: Abstraction has 43733 states and 49006 transitions. [2024-11-18 09:41:34,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 43733 states and 49006 transitions. [2024-11-18 09:41:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-18 09:41:34,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:34,598 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2024-11-18 09:41:34,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 09:41:34,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 09:41:34,799 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:34,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:34,800 INFO L85 PathProgramCache]: Analyzing trace with hash 700054617, now seen corresponding path program 1 times [2024-11-18 09:41:34,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:34,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680639640] [2024-11-18 09:41:34,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:34,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 147 proven. 6 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-18 09:41:35,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:35,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680639640] [2024-11-18 09:41:35,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680639640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:35,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376754547] [2024-11-18 09:41:35,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:35,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:35,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:35,540 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:41:35,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:41:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:35,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:41:35,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-18 09:41:35,775 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:35,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376754547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:35,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:35,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:35,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045773552] [2024-11-18 09:41:35,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:35,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:35,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:35,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:35,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:35,778 INFO L87 Difference]: Start difference. First operand 43733 states and 49006 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:36,523 INFO L93 Difference]: Finished difference Result 86241 states and 96286 transitions. [2024-11-18 09:41:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:36,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 374 [2024-11-18 09:41:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:36,525 INFO L225 Difference]: With dead ends: 86241 [2024-11-18 09:41:36,525 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 09:41:36,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:36,563 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 219 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:36,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 301 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:41:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 09:41:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 09:41:36,564 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) [2024-11-18 09:41:36,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 09:41:36,565 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 374 [2024-11-18 09:41:36,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:36,565 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 09:41:36,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:36,565 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 09:41:36,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 09:41:36,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 09:41:36,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 09:41:36,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:36,773 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:36,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 09:41:40,065 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 09:41:40,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:41:40 BoogieIcfgContainer [2024-11-18 09:41:40,094 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 09:41:40,095 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 09:41:40,095 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 09:41:40,095 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 09:41:40,096 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:41:04" (3/4) ... [2024-11-18 09:41:40,098 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 09:41:40,129 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-18 09:41:40,132 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 09:41:40,133 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 09:41:40,135 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 09:41:40,339 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 09:41:40,340 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 09:41:40,340 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 09:41:40,341 INFO L158 Benchmark]: Toolchain (without parser) took 39358.40ms. Allocated memory was 182.5MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 117.0MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 247.5MB. Max. memory is 16.1GB. [2024-11-18 09:41:40,341 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 09:41:40,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 877.11ms. Allocated memory is still 182.5MB. Free memory was 116.7MB in the beginning and 102.4MB in the end (delta: 14.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-18 09:41:40,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 149.02ms. Allocated memory is still 182.5MB. Free memory was 102.4MB in the beginning and 87.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-18 09:41:40,342 INFO L158 Benchmark]: Boogie Preprocessor took 191.75ms. Allocated memory is still 182.5MB. Free memory was 87.7MB in the beginning and 75.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 09:41:40,342 INFO L158 Benchmark]: RCFGBuilder took 2082.40ms. Allocated memory was 182.5MB in the beginning and 255.9MB in the end (delta: 73.4MB). Free memory was 75.0MB in the beginning and 81.6MB in the end (delta: -6.6MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. [2024-11-18 09:41:40,342 INFO L158 Benchmark]: TraceAbstraction took 35803.47ms. Allocated memory was 255.9MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 80.6MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 637.4MB. Max. memory is 16.1GB. [2024-11-18 09:41:40,343 INFO L158 Benchmark]: Witness Printer took 245.30ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-18 09:41:40,344 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 877.11ms. Allocated memory is still 182.5MB. Free memory was 116.7MB in the beginning and 102.4MB in the end (delta: 14.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 149.02ms. Allocated memory is still 182.5MB. Free memory was 102.4MB in the beginning and 87.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 191.75ms. Allocated memory is still 182.5MB. Free memory was 87.7MB in the beginning and 75.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 2082.40ms. Allocated memory was 182.5MB in the beginning and 255.9MB in the end (delta: 73.4MB). Free memory was 75.0MB in the beginning and 81.6MB in the end (delta: -6.6MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. * TraceAbstraction took 35803.47ms. Allocated memory was 255.9MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 80.6MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 637.4MB. Max. memory is 16.1GB. * Witness Printer took 245.30ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 27.3MB). 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: 1579]: 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, 302 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.4s, OverallIterations: 18, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4229 SdHoareTripleChecker+Valid, 13.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4229 mSDsluCounter, 4083 SdHoareTripleChecker+Invalid, 11.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 628 mSDsCounter, 2309 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12012 IncrementalHoareTripleChecker+Invalid, 14321 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2309 mSolverCounterUnsat, 3455 mSDtfsCounter, 12012 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2335 GetRequests, 2299 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43733occurred in iteration=17, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 18 MinimizatonAttempts, 8643 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 7043 NumberOfCodeBlocks, 7043 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 7018 ConstructedInterpolants, 0 QuantifiedInterpolants, 12624 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4231 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 25 InterpolantComputations, 18 PerfectInterpolantSequences, 4620/4662 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]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((a15 == 1) && (a5 == 1)) && (a11 == 1)) && (a3 == 1)) && (a6 == 1)) || ((((((a5 == 1) && (a12 == 1)) && (a26 <= 0)) && (a11 == 1)) && (a3 == 1)) && (a6 == 1))) || ((((a5 == 1) && (a3 == 1)) && (a11 <= 0)) && (a6 <= 0))) || ((((((a5 == 1) && (2 <= a3)) && (a26 <= 0)) && (a11 <= 0)) && (a27 == 1)) && (a6 <= 0))) || ((((a5 == 1) && (2 <= a3)) && (a11 == 1)) && (a6 == 1))) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a11 <= 0)) && (a3 == 0)) && (a6 <= 0))) || (((((a5 == 1) && (2 <= a3)) && (a11 == 1)) && (a27 == 1)) && (a6 <= 0))) || (((((a15 == 1) && (a5 == 1)) && (a11 == 1)) && (a3 == 0)) && (a6 <= 0))) || (((((a5 == 1) && (a11 == 1)) && (a3 == 1)) && (a27 == 1)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (2 <= a3)) && (a11 == 1)) && (a6 <= 0))) || ((((a5 == 1) && (a3 == 1)) && (a6 == 1)) && (a11 <= 0))) || (((((a5 == 1) && (a12 == 1)) && (a11 == 1)) && (a3 == 1)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a11 == 1)) && (a3 == 0)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a11 == 1)) && (a27 == 1)) && (a3 == 0))) || (((((a5 == 1) && (2 <= a3)) && (a26 <= 0)) && (a11 == 1)) && (a6 <= 0))) || (((((a5 == 1) && (a11 == 1)) && (a3 == 1)) && (a12 == 0)) && (a6 <= 0))) || ((((a5 == 1) && (a6 == 1)) && (a11 <= 0)) && (a3 == 0))) || (((((((a26 == 1) && (a5 == 1)) && (a11 == 1)) && (a3 == 1)) && (a6 == 1)) && (a12 == 0)) && (a27 == 1))) || ((((a5 == 1) && (2 <= a3)) && (a6 == 1)) && (a11 <= 0))) || (((((a5 == 1) && (a11 == 1)) && (a27 == 1)) && (a3 == 0)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a3 == 1)) && (a11 <= 0)) && (a27 == 1))) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a11 <= 0)) && (a27 == 1)) && (a3 == 0))) || ((((a5 == 1) && (a11 == 1)) && (a6 == 1)) && (a3 == 0))) || (((((((a15 == 1) && (a26 == 1)) && (a5 == 1)) && (2 <= a3)) && (a11 <= 0)) && (a27 == 1)) && (a6 <= 0))) || (((((((a15 == 1) && (a26 == 1)) && (a5 == 1)) && (a11 <= 0)) && (a27 == 1)) && (a3 == 0)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (2 <= a3)) && (a11 <= 0)) && (a6 <= 0))) || (((((a5 == 1) && (a26 <= 0)) && (a11 <= 0)) && (a3 == 0)) && (a6 <= 0))) RESULT: Ultimate proved your program to be correct! [2024-11-18 09:41:40,375 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