./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label58.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label58.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 07792715f910a6428c32d8dd46a29e2e155fdc408a1bb959e7d2fa19719ab855 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:42:32,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:42:32,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:42:32,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:42:32,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:42:32,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:42:32,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:42:32,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:42:32,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:42:32,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:42:32,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:42:32,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:42:32,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:42:32,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:42:32,960 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:42:32,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:42:32,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:42:32,961 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:42:32,961 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:42:32,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:42:32,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:42:32,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:42:32,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:42:32,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:42:32,965 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:42:32,965 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:42:32,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:42:32,966 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:42:32,966 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:42:32,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:42:32,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:42:32,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:42:32,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:42:32,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:42:32,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:42:32,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:42:32,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:42:32,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:42:32,968 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:42:32,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:42:32,970 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:42:32,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:42:32,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07792715f910a6428c32d8dd46a29e2e155fdc408a1bb959e7d2fa19719ab855 [2024-11-09 18:42:33,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:42:33,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:42:33,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:42:33,194 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:42:33,194 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:42:33,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label58.c [2024-11-09 18:42:34,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:42:34,766 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:42:34,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label58.c [2024-11-09 18:42:34,783 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7356d1914/1cf2e046e16943418b7be68262cb7f35/FLAG588c01c7a [2024-11-09 18:42:35,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7356d1914/1cf2e046e16943418b7be68262cb7f35 [2024-11-09 18:42:35,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:42:35,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:42:35,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:42:35,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:42:35,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:42:35,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:35,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745fa43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35, skipping insertion in model container [2024-11-09 18:42:35,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:35,113 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:42:35,578 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_label58.c[55815,55828] [2024-11-09 18:42:35,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:42:35,628 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:42:35,762 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_label58.c[55815,55828] [2024-11-09 18:42:35,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:42:35,793 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:42:35,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35 WrapperNode [2024-11-09 18:42:35,794 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:42:35,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:42:35,795 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:42:35,795 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:42:35,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:35,836 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:35,912 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-09 18:42:35,912 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:42:35,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:42:35,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:42:35,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:42:35,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:35,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:35,935 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:35,972 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 18:42:35,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:35,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:36,005 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:36,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:36,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:36,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:36,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:42:36,040 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:42:36,040 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:42:36,040 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:42:36,041 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (1/1) ... [2024-11-09 18:42:36,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:42:36,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:36,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:42:36,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:42:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:42:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:42:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:42:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:42:36,184 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:42:36,186 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:42:37,637 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-09 18:42:37,638 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:42:37,660 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:42:37,660 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:42:37,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:42:37 BoogieIcfgContainer [2024-11-09 18:42:37,660 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:42:37,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:42:37,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:42:37,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:42:37,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:42:35" (1/3) ... [2024-11-09 18:42:37,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdd4327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:42:37, skipping insertion in model container [2024-11-09 18:42:37,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:35" (2/3) ... [2024-11-09 18:42:37,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdd4327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:42:37, skipping insertion in model container [2024-11-09 18:42:37,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:42:37" (3/3) ... [2024-11-09 18:42:37,667 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label58.c [2024-11-09 18:42:37,680 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:42:37,680 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:42:37,748 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:42:37,753 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;@6588e54b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:42:37,754 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:42:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:37,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-09 18:42:37,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:37,773 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] [2024-11-09 18:42:37,773 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:37,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:37,779 INFO L85 PathProgramCache]: Analyzing trace with hash 671481246, now seen corresponding path program 1 times [2024-11-09 18:42:37,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:37,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283644642] [2024-11-09 18:42:37,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:37,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:38,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:38,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283644642] [2024-11-09 18:42:38,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283644642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:38,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:38,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:38,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877796193] [2024-11-09 18:42:38,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:38,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:38,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:38,547 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:39,503 INFO L93 Difference]: Finished difference Result 866 states and 1513 transitions. [2024-11-09 18:42:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:39,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2024-11-09 18:42:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:39,524 INFO L225 Difference]: With dead ends: 866 [2024-11-09 18:42:39,524 INFO L226 Difference]: Without dead ends: 468 [2024-11-09 18:42:39,528 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 [2024-11-09 18:42:39,530 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 144 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:39,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 174 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:42:39,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-09 18:42:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 462. [2024-11-09 18:42:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.5531453362255965) internal successors, (716), 461 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 716 transitions. [2024-11-09 18:42:39,596 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 716 transitions. Word has length 162 [2024-11-09 18:42:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:39,597 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 716 transitions. [2024-11-09 18:42:39,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 716 transitions. [2024-11-09 18:42:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-09 18:42:39,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:39,600 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:42:39,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:42:39,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:39,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:39,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1051481308, now seen corresponding path program 1 times [2024-11-09 18:42:39,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:39,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538335173] [2024-11-09 18:42:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:39,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:39,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:39,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538335173] [2024-11-09 18:42:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538335173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:39,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722934876] [2024-11-09 18:42:39,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:39,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:39,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:39,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:39,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:39,821 INFO L87 Difference]: Start difference. First operand 462 states and 716 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:40,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:40,448 INFO L93 Difference]: Finished difference Result 1351 states and 2110 transitions. [2024-11-09 18:42:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:40,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2024-11-09 18:42:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:40,453 INFO L225 Difference]: With dead ends: 1351 [2024-11-09 18:42:40,453 INFO L226 Difference]: Without dead ends: 891 [2024-11-09 18:42:40,455 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 [2024-11-09 18:42:40,456 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 247 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:40,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 96 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:42:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-09 18:42:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 873. [2024-11-09 18:42:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5298165137614679) internal successors, (1334), 872 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1334 transitions. [2024-11-09 18:42:40,483 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1334 transitions. Word has length 171 [2024-11-09 18:42:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:40,484 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1334 transitions. [2024-11-09 18:42:40,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1334 transitions. [2024-11-09 18:42:40,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-09 18:42:40,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:40,487 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 18:42:40,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:42:40,487 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:40,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1344768766, now seen corresponding path program 1 times [2024-11-09 18:42:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:40,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698785488] [2024-11-09 18:42:40,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:40,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:40,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:40,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698785488] [2024-11-09 18:42:40,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698785488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:40,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:40,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:40,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160785070] [2024-11-09 18:42:40,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:40,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:40,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:40,649 INFO L87 Difference]: Start difference. First operand 873 states and 1334 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:40,951 INFO L93 Difference]: Finished difference Result 1720 states and 2632 transitions. [2024-11-09 18:42:40,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:40,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2024-11-09 18:42:40,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:40,962 INFO L225 Difference]: With dead ends: 1720 [2024-11-09 18:42:40,962 INFO L226 Difference]: Without dead ends: 849 [2024-11-09 18:42:40,964 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 [2024-11-09 18:42:40,967 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 330 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:40,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 33 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:42:40,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-09 18:42:40,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2024-11-09 18:42:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 1.474056603773585) internal successors, (1250), 848 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1250 transitions. [2024-11-09 18:42:40,980 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1250 transitions. Word has length 176 [2024-11-09 18:42:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:40,980 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1250 transitions. [2024-11-09 18:42:40,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:40,980 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1250 transitions. [2024-11-09 18:42:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-09 18:42:40,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:40,982 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-09 18:42:40,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:42:40,983 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:40,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:40,983 INFO L85 PathProgramCache]: Analyzing trace with hash -566079036, now seen corresponding path program 1 times [2024-11-09 18:42:40,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:40,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858656555] [2024-11-09 18:42:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:40,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:42:41,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:41,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858656555] [2024-11-09 18:42:41,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858656555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:41,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:41,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:41,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894894629] [2024-11-09 18:42:41,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:41,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:41,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:41,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:41,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:41,206 INFO L87 Difference]: Start difference. First operand 849 states and 1250 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:41,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:41,833 INFO L93 Difference]: Finished difference Result 2512 states and 3704 transitions. [2024-11-09 18:42:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:41,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 [2024-11-09 18:42:41,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:41,837 INFO L225 Difference]: With dead ends: 2512 [2024-11-09 18:42:41,838 INFO L226 Difference]: Without dead ends: 1665 [2024-11-09 18:42:41,839 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 [2024-11-09 18:42:41,840 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 210 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:41,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 145 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:42:41,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2024-11-09 18:42:41,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1665. [2024-11-09 18:42:41,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 1.3052884615384615) internal successors, (2172), 1664 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2172 transitions. [2024-11-09 18:42:41,864 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2172 transitions. Word has length 178 [2024-11-09 18:42:41,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:41,864 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2172 transitions. [2024-11-09 18:42:41,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2172 transitions. [2024-11-09 18:42:41,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-09 18:42:41,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:41,867 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:42:41,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:42:41,868 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:41,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash 190461037, now seen corresponding path program 1 times [2024-11-09 18:42:41,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:41,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170783783] [2024-11-09 18:42:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:41,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:42:42,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:42,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170783783] [2024-11-09 18:42:42,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170783783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:42,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:42,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:42,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889315453] [2024-11-09 18:42:42,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:42,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:42,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:42,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:42,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:42,182 INFO L87 Difference]: Start difference. First operand 1665 states and 2172 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:42,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:42,840 INFO L93 Difference]: Finished difference Result 4989 states and 6510 transitions. [2024-11-09 18:42:42,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:42,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 183 [2024-11-09 18:42:42,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:42,849 INFO L225 Difference]: With dead ends: 4989 [2024-11-09 18:42:42,849 INFO L226 Difference]: Without dead ends: 3326 [2024-11-09 18:42:42,852 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 [2024-11-09 18:42:42,855 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 287 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:42,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 55 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:42:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2024-11-09 18:42:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3322. [2024-11-09 18:42:42,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3321 states have (on average 1.2999096657633242) internal successors, (4317), 3321 states have internal predecessors, (4317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:42,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 4317 transitions. [2024-11-09 18:42:42,905 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 4317 transitions. Word has length 183 [2024-11-09 18:42:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:42,906 INFO L471 AbstractCegarLoop]: Abstraction has 3322 states and 4317 transitions. [2024-11-09 18:42:42,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:42,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 4317 transitions. [2024-11-09 18:42:42,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-09 18:42:42,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:42,911 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-09 18:42:42,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 18:42:42,911 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:42,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:42,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1303219479, now seen corresponding path program 1 times [2024-11-09 18:42:42,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:42,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882546479] [2024-11-09 18:42:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:42,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:42:43,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882546479] [2024-11-09 18:42:43,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882546479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058242250] [2024-11-09 18:42:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:43,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:43,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:43,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:42:43,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:42:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:43,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:42:43,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:42:43,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:43,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058242250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:43,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:43,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 18:42:43,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485654648] [2024-11-09 18:42:43,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:43,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:43,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:43,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:43,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:43,336 INFO L87 Difference]: Start difference. First operand 3322 states and 4317 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:43,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:43,554 INFO L93 Difference]: Finished difference Result 9954 states and 12939 transitions. [2024-11-09 18:42:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:43,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 185 [2024-11-09 18:42:43,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:43,574 INFO L225 Difference]: With dead ends: 9954 [2024-11-09 18:42:43,575 INFO L226 Difference]: Without dead ends: 6634 [2024-11-09 18:42:43,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:43,583 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 322 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:43,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 539 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:42:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2024-11-09 18:42:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6625. [2024-11-09 18:42:43,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6625 states, 6624 states have (on average 1.2995169082125604) internal successors, (8608), 6624 states have internal predecessors, (8608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6625 states to 6625 states and 8608 transitions. [2024-11-09 18:42:43,705 INFO L78 Accepts]: Start accepts. Automaton has 6625 states and 8608 transitions. Word has length 185 [2024-11-09 18:42:43,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:43,705 INFO L471 AbstractCegarLoop]: Abstraction has 6625 states and 8608 transitions. [2024-11-09 18:42:43,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:43,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6625 states and 8608 transitions. [2024-11-09 18:42:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-09 18:42:43,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:43,711 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:42:43,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 18:42:43,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 18:42:43,916 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:43,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1965902460, now seen corresponding path program 1 times [2024-11-09 18:42:43,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:43,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554970157] [2024-11-09 18:42:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:43,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:44,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:44,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554970157] [2024-11-09 18:42:44,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554970157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:44,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541258444] [2024-11-09 18:42:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:44,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:44,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:44,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:42:44,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:42:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:44,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:42:44,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:42:44,282 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:44,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541258444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:44,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:44,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 18:42:44,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57179566] [2024-11-09 18:42:44,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:44,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:44,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:44,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:44,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:44,283 INFO L87 Difference]: Start difference. First operand 6625 states and 8608 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:44,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:44,909 INFO L93 Difference]: Finished difference Result 16520 states and 22026 transitions. [2024-11-09 18:42:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:44,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 187 [2024-11-09 18:42:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:44,936 INFO L225 Difference]: With dead ends: 16520 [2024-11-09 18:42:44,936 INFO L226 Difference]: Without dead ends: 9897 [2024-11-09 18:42:44,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:44,945 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 210 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:44,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 372 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:42:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9897 states. [2024-11-09 18:42:45,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9897 to 9889. [2024-11-09 18:42:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9889 states, 9888 states have (on average 1.2342233009708738) internal successors, (12204), 9888 states have internal predecessors, (12204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 12204 transitions. [2024-11-09 18:42:45,222 INFO L78 Accepts]: Start accepts. Automaton has 9889 states and 12204 transitions. Word has length 187 [2024-11-09 18:42:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:45,222 INFO L471 AbstractCegarLoop]: Abstraction has 9889 states and 12204 transitions. [2024-11-09 18:42:45,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:45,223 INFO L276 IsEmpty]: Start isEmpty. Operand 9889 states and 12204 transitions. [2024-11-09 18:42:45,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-09 18:42:45,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:45,230 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:42:45,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:42:45,431 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,SelfDestructingSolverStorable6 [2024-11-09 18:42:45,432 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:45,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:45,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1193498294, now seen corresponding path program 1 times [2024-11-09 18:42:45,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:45,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219497944] [2024-11-09 18:42:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:45,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:42:45,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:45,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219497944] [2024-11-09 18:42:45,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219497944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:45,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:45,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:42:45,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117970557] [2024-11-09 18:42:45,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:45,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:42:45,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:45,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:42:45,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:42:45,704 INFO L87 Difference]: Start difference. First operand 9889 states and 12204 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:46,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:46,340 INFO L93 Difference]: Finished difference Result 19798 states and 24448 transitions. [2024-11-09 18:42:46,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:42:46,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-09 18:42:46,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:46,362 INFO L225 Difference]: With dead ends: 19798 [2024-11-09 18:42:46,362 INFO L226 Difference]: Without dead ends: 9911 [2024-11-09 18:42:46,371 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 [2024-11-09 18:42:46,372 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 463 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:46,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 48 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:42:46,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9911 states. [2024-11-09 18:42:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9911 to 9889. [2024-11-09 18:42:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9889 states, 9888 states have (on average 1.2245145631067962) internal successors, (12108), 9888 states have internal predecessors, (12108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 12108 transitions. [2024-11-09 18:42:46,536 INFO L78 Accepts]: Start accepts. Automaton has 9889 states and 12108 transitions. Word has length 221 [2024-11-09 18:42:46,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:46,536 INFO L471 AbstractCegarLoop]: Abstraction has 9889 states and 12108 transitions. [2024-11-09 18:42:46,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 9889 states and 12108 transitions. [2024-11-09 18:42:46,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-09 18:42:46,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:46,545 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:42:46,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 18:42:46,545 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:46,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2088957650, now seen corresponding path program 1 times [2024-11-09 18:42:46,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:46,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382766475] [2024-11-09 18:42:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:46,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:46,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:46,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382766475] [2024-11-09 18:42:46,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382766475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:46,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:46,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:42:46,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102903100] [2024-11-09 18:42:46,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:46,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:42:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:42:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:42:46,871 INFO L87 Difference]: Start difference. First operand 9889 states and 12108 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:47,599 INFO L93 Difference]: Finished difference Result 34557 states and 42486 transitions. [2024-11-09 18:42:47,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:42:47,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2024-11-09 18:42:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:47,636 INFO L225 Difference]: With dead ends: 34557 [2024-11-09 18:42:47,636 INFO L226 Difference]: Without dead ends: 24670 [2024-11-09 18:42:47,652 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 [2024-11-09 18:42:47,653 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 459 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:47,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 482 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:42:47,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24670 states. [2024-11-09 18:42:47,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24670 to 24655. [2024-11-09 18:42:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24655 states, 24654 states have (on average 1.2107568751521052) internal successors, (29850), 24654 states have internal predecessors, (29850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24655 states to 24655 states and 29850 transitions. [2024-11-09 18:42:47,973 INFO L78 Accepts]: Start accepts. Automaton has 24655 states and 29850 transitions. Word has length 234 [2024-11-09 18:42:47,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:47,974 INFO L471 AbstractCegarLoop]: Abstraction has 24655 states and 29850 transitions. [2024-11-09 18:42:47,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 24655 states and 29850 transitions. [2024-11-09 18:42:47,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-09 18:42:47,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:47,982 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 18:42:47,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 18:42:47,983 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:47,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:47,983 INFO L85 PathProgramCache]: Analyzing trace with hash 874319839, now seen corresponding path program 1 times [2024-11-09 18:42:47,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:47,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038286633] [2024-11-09 18:42:47,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:47,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:42:49,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038286633] [2024-11-09 18:42:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038286633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178370271] [2024-11-09 18:42:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:49,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:49,047 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:42:49,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:42:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:49,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:42:49,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 18:42:49,314 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:49,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178370271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:49,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:49,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:42:49,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497672833] [2024-11-09 18:42:49,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:49,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:49,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:49,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:42:49,315 INFO L87 Difference]: Start difference. First operand 24655 states and 29850 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:49,930 INFO L93 Difference]: Finished difference Result 70972 states and 85686 transitions. [2024-11-09 18:42:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:49,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 244 [2024-11-09 18:42:49,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:50,002 INFO L225 Difference]: With dead ends: 70972 [2024-11-09 18:42:50,002 INFO L226 Difference]: Without dead ends: 46319 [2024-11-09 18:42:50,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:42:50,033 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 88 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:50,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 324 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:42:50,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46319 states. [2024-11-09 18:42:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46319 to 46307. [2024-11-09 18:42:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46307 states, 46306 states have (on average 1.1560057012050273) internal successors, (53530), 46306 states have internal predecessors, (53530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46307 states to 46307 states and 53530 transitions. [2024-11-09 18:42:50,523 INFO L78 Accepts]: Start accepts. Automaton has 46307 states and 53530 transitions. Word has length 244 [2024-11-09 18:42:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:50,524 INFO L471 AbstractCegarLoop]: Abstraction has 46307 states and 53530 transitions. [2024-11-09 18:42:50,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 46307 states and 53530 transitions. [2024-11-09 18:42:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-09 18:42:50,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:50,537 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-09 18:42:50,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:42:50,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:50,738 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:50,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -455019107, now seen corresponding path program 1 times [2024-11-09 18:42:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:50,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586376350] [2024-11-09 18:42:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:50,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:50,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:50,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586376350] [2024-11-09 18:42:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586376350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:50,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:50,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:42:50,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768685860] [2024-11-09 18:42:50,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:50,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:50,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:50,975 INFO L87 Difference]: Start difference. First operand 46307 states and 53530 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:51,708 INFO L93 Difference]: Finished difference Result 130364 states and 150581 transitions. [2024-11-09 18:42:51,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:51,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 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 274 [2024-11-09 18:42:51,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:51,801 INFO L225 Difference]: With dead ends: 130364 [2024-11-09 18:42:51,802 INFO L226 Difference]: Without dead ends: 84059 [2024-11-09 18:42:52,005 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 [2024-11-09 18:42:52,005 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 243 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:52,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 331 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:42:52,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84059 states. [2024-11-09 18:42:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84059 to 84049. [2024-11-09 18:42:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84049 states, 84048 states have (on average 1.1230130401675233) internal successors, (94387), 84048 states have internal predecessors, (94387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84049 states to 84049 states and 94387 transitions. [2024-11-09 18:42:53,081 INFO L78 Accepts]: Start accepts. Automaton has 84049 states and 94387 transitions. Word has length 274 [2024-11-09 18:42:53,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:53,082 INFO L471 AbstractCegarLoop]: Abstraction has 84049 states and 94387 transitions. [2024-11-09 18:42:53,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 84049 states and 94387 transitions. [2024-11-09 18:42:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-09 18:42:53,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:53,319 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-09 18:42:53,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 18:42:53,319 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:53,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:53,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1986556378, now seen corresponding path program 1 times [2024-11-09 18:42:53,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:53,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496868470] [2024-11-09 18:42:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:53,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-11-09 18:42:53,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:53,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496868470] [2024-11-09 18:42:53,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496868470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:53,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:53,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:53,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751589311] [2024-11-09 18:42:53,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:53,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:53,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:53,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:53,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:53,684 INFO L87 Difference]: Start difference. First operand 84049 states and 94387 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 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) [2024-11-09 18:42:54,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:54,827 INFO L93 Difference]: Finished difference Result 209416 states and 234870 transitions. [2024-11-09 18:42:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:54,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 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 392 [2024-11-09 18:42:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:54,965 INFO L225 Difference]: With dead ends: 209416 [2024-11-09 18:42:54,965 INFO L226 Difference]: Without dead ends: 125369 [2024-11-09 18:42:55,128 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 [2024-11-09 18:42:55,128 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 153 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:55,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 156 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:42:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125369 states. [2024-11-09 18:42:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125369 to 122909. [2024-11-09 18:42:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122909 states, 122908 states have (on average 1.1218716438311582) internal successors, (137887), 122908 states have internal predecessors, (137887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122909 states to 122909 states and 137887 transitions. [2024-11-09 18:42:56,970 INFO L78 Accepts]: Start accepts. Automaton has 122909 states and 137887 transitions. Word has length 392 [2024-11-09 18:42:56,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:56,970 INFO L471 AbstractCegarLoop]: Abstraction has 122909 states and 137887 transitions. [2024-11-09 18:42:56,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 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) [2024-11-09 18:42:56,971 INFO L276 IsEmpty]: Start isEmpty. Operand 122909 states and 137887 transitions. [2024-11-09 18:42:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-09 18:42:57,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:57,003 INFO L215 NwaCegarLoop]: trace histogram [6, 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, 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, 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] [2024-11-09 18:42:57,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 18:42:57,003 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:57,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:57,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1097740999, now seen corresponding path program 1 times [2024-11-09 18:42:57,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:57,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450949780] [2024-11-09 18:42:57,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:57,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 217 proven. 7 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-11-09 18:42:58,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:58,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450949780] [2024-11-09 18:42:58,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450949780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:58,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021282282] [2024-11-09 18:42:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:58,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:58,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:58,672 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:42:58,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:42:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:58,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:42:58,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-09 18:42:58,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:58,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021282282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:58,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:58,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 18:42:58,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923381407] [2024-11-09 18:42:58,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:58,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:58,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:58,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:42:58,943 INFO L87 Difference]: Start difference. First operand 122909 states and 137887 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:43:00,174 INFO L93 Difference]: Finished difference Result 309163 states and 347320 transitions. [2024-11-09 18:43:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:43:00,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 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 400 [2024-11-09 18:43:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:43:00,400 INFO L225 Difference]: With dead ends: 309163 [2024-11-09 18:43:00,400 INFO L226 Difference]: Without dead ends: 186256 [2024-11-09 18:43:00,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:43:00,449 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 155 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:43:00,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 170 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:43:00,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186256 states. [2024-11-09 18:43:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186256 to 120061. [2024-11-09 18:43:02,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120061 states, 120060 states have (on average 1.1478260869565218) internal successors, (137808), 120060 states have internal predecessors, (137808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120061 states to 120061 states and 137808 transitions. [2024-11-09 18:43:02,756 INFO L78 Accepts]: Start accepts. Automaton has 120061 states and 137808 transitions. Word has length 400 [2024-11-09 18:43:02,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:43:02,756 INFO L471 AbstractCegarLoop]: Abstraction has 120061 states and 137808 transitions. [2024-11-09 18:43:02,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:02,756 INFO L276 IsEmpty]: Start isEmpty. Operand 120061 states and 137808 transitions. [2024-11-09 18:43:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-09 18:43:02,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:43:02,799 INFO L215 NwaCegarLoop]: trace histogram [5, 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, 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, 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] [2024-11-09 18:43:02,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:43:02,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:43:03,000 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:43:03,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:43:03,001 INFO L85 PathProgramCache]: Analyzing trace with hash -641472707, now seen corresponding path program 1 times [2024-11-09 18:43:03,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:43:03,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822016076] [2024-11-09 18:43:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:43:03,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:43:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:43:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 278 proven. 63 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-09 18:43:03,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:43:03,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822016076] [2024-11-09 18:43:03,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822016076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:43:03,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372398156] [2024-11-09 18:43:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:43:03,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:43:03,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:43:03,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:43:03,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:43:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:43:03,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:43:04,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:43:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 18:43:04,038 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:43:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372398156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:43:04,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:43:04,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:43:04,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760647225] [2024-11-09 18:43:04,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:43:04,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:43:04,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:43:04,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:43:04,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:43:04,040 INFO L87 Difference]: Start difference. First operand 120061 states and 137808 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:43:05,015 INFO L93 Difference]: Finished difference Result 213358 states and 243354 transitions. [2024-11-09 18:43:05,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:43:05,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 400 [2024-11-09 18:43:05,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:43:05,134 INFO L225 Difference]: With dead ends: 213358 [2024-11-09 18:43:05,134 INFO L226 Difference]: Without dead ends: 93299 [2024-11-09 18:43:05,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:43:05,202 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 219 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:43:05,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 328 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:43:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93299 states. [2024-11-09 18:43:06,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93299 to 91637. [2024-11-09 18:43:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91637 states, 91636 states have (on average 1.1220590161072068) internal successors, (102821), 91636 states have internal predecessors, (102821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91637 states to 91637 states and 102821 transitions. [2024-11-09 18:43:06,657 INFO L78 Accepts]: Start accepts. Automaton has 91637 states and 102821 transitions. Word has length 400 [2024-11-09 18:43:06,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:43:06,658 INFO L471 AbstractCegarLoop]: Abstraction has 91637 states and 102821 transitions. [2024-11-09 18:43:06,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 91637 states and 102821 transitions. [2024-11-09 18:43:06,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-09 18:43:06,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:43:06,700 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:43:06,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:43:06,900 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,SelfDestructingSolverStorable13 [2024-11-09 18:43:06,901 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:43:06,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:43:06,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1961821915, now seen corresponding path program 1 times [2024-11-09 18:43:06,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:43:06,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852450973] [2024-11-09 18:43:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:43:06,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:43:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:43:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-09 18:43:07,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:43:07,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852450973] [2024-11-09 18:43:07,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852450973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:43:07,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:43:07,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:43:07,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332369418] [2024-11-09 18:43:07,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:43:07,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:43:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:43:07,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:43:07,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:43:07,353 INFO L87 Difference]: Start difference. First operand 91637 states and 102821 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:08,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:43:08,705 INFO L93 Difference]: Finished difference Result 207003 states and 232283 transitions. [2024-11-09 18:43:08,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:43:08,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 413 [2024-11-09 18:43:08,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:43:08,834 INFO L225 Difference]: With dead ends: 207003 [2024-11-09 18:43:08,834 INFO L226 Difference]: Without dead ends: 115368 [2024-11-09 18:43:08,892 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 [2024-11-09 18:43:08,893 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 465 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:43:08,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 91 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:43:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115368 states. [2024-11-09 18:43:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115368 to 112037. [2024-11-09 18:43:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112037 states, 112036 states have (on average 1.100958620443429) internal successors, (123347), 112036 states have internal predecessors, (123347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112037 states to 112037 states and 123347 transitions. [2024-11-09 18:43:10,582 INFO L78 Accepts]: Start accepts. Automaton has 112037 states and 123347 transitions. Word has length 413 [2024-11-09 18:43:10,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:43:10,583 INFO L471 AbstractCegarLoop]: Abstraction has 112037 states and 123347 transitions. [2024-11-09 18:43:10,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 112037 states and 123347 transitions. [2024-11-09 18:43:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-09 18:43:10,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:43:10,618 INFO L215 NwaCegarLoop]: trace histogram [5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:43:10,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 18:43:10,619 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:43:10,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:43:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash 782972058, now seen corresponding path program 1 times [2024-11-09 18:43:10,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:43:10,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564200764] [2024-11-09 18:43:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:43:10,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:43:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:43:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 117 proven. 7 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-09 18:43:12,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:43:12,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564200764] [2024-11-09 18:43:12,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564200764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:43:12,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506934050] [2024-11-09 18:43:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:43:12,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:43:12,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:43:12,390 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:43:12,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:43:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:43:12,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:43:12,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:43:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-09 18:43:12,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:43:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506934050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:43:12,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:43:12,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:43:12,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537734774] [2024-11-09 18:43:12,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:43:12,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:43:12,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:43:12,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:43:12,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:43:12,765 INFO L87 Difference]: Start difference. First operand 112037 states and 123347 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:13,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:43:13,611 INFO L93 Difference]: Finished difference Result 222046 states and 244494 transitions. [2024-11-09 18:43:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:43:13,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 441 [2024-11-09 18:43:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:43:13,725 INFO L225 Difference]: With dead ends: 222046 [2024-11-09 18:43:13,725 INFO L226 Difference]: Without dead ends: 110011 [2024-11-09 18:43:13,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:43:13,785 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 103 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:43:13,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 296 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:43:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110011 states. [2024-11-09 18:43:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110011 to 108365. [2024-11-09 18:43:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108365 states, 108364 states have (on average 1.0961112546602192) internal successors, (118779), 108364 states have internal predecessors, (118779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:15,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108365 states to 108365 states and 118779 transitions. [2024-11-09 18:43:15,185 INFO L78 Accepts]: Start accepts. Automaton has 108365 states and 118779 transitions. Word has length 441 [2024-11-09 18:43:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:43:15,186 INFO L471 AbstractCegarLoop]: Abstraction has 108365 states and 118779 transitions. [2024-11-09 18:43:15,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 108365 states and 118779 transitions. [2024-11-09 18:43:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-09 18:43:15,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:43:15,233 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:43:15,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 18:43:15,434 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,SelfDestructingSolverStorable15 [2024-11-09 18:43:15,434 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:43:15,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:43:15,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1360399985, now seen corresponding path program 1 times [2024-11-09 18:43:15,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:43:15,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849966287] [2024-11-09 18:43:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:43:15,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:43:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:43:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 152 proven. 7 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-09 18:43:16,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:43:16,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849966287] [2024-11-09 18:43:16,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849966287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:43:16,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946297283] [2024-11-09 18:43:16,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:43:16,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:43:16,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:43:16,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:43:16,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:43:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:43:17,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:43:17,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:43:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 18:43:17,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:43:17,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946297283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:43:17,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:43:17,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:43:17,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661758340] [2024-11-09 18:43:17,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:43:17,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:43:17,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:43:17,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:43:17,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:43:17,310 INFO L87 Difference]: Start difference. First operand 108365 states and 118779 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:43:18,335 INFO L93 Difference]: Finished difference Result 215920 states and 236692 transitions. [2024-11-09 18:43:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:43:18,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 478 [2024-11-09 18:43:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:43:18,473 INFO L225 Difference]: With dead ends: 215920 [2024-11-09 18:43:18,473 INFO L226 Difference]: Without dead ends: 107557 [2024-11-09 18:43:18,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:43:18,550 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 122 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:43:18,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 107 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:43:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107557 states. [2024-11-09 18:43:20,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107557 to 105917. [2024-11-09 18:43:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105917 states, 105916 states have (on average 1.0831602401903395) internal successors, (114724), 105916 states have internal predecessors, (114724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105917 states to 105917 states and 114724 transitions. [2024-11-09 18:43:20,319 INFO L78 Accepts]: Start accepts. Automaton has 105917 states and 114724 transitions. Word has length 478 [2024-11-09 18:43:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:43:20,320 INFO L471 AbstractCegarLoop]: Abstraction has 105917 states and 114724 transitions. [2024-11-09 18:43:20,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 105917 states and 114724 transitions. [2024-11-09 18:43:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2024-11-09 18:43:20,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:43:20,415 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:43:20,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 18:43:20,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:43:20,616 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:43:20,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:43:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1883234747, now seen corresponding path program 1 times [2024-11-09 18:43:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:43:20,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865638500] [2024-11-09 18:43:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:43:20,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:43:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat