./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label04.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 90fb180caa8b6a5816e65dbd5894ace691fe27eeb9d4238d5c5bc9791f06c4a2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:21:30,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:21:30,234 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:21:30,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:21:30,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:21:30,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:21:30,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:21:30,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:21:30,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:21:30,260 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:21:30,260 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:21:30,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:21:30,261 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:21:30,261 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:21:30,262 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:21:30,263 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:21:30,264 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:21:30,264 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:21:30,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:21:30,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:21:30,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:21:30,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:21:30,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:21:30,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:21:30,267 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:21:30,267 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:21:30,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:21:30,268 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:21:30,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:21:30,268 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:21:30,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:21:30,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:21:30,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:21:30,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:21:30,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:21:30,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:21:30,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:21:30,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:21:30,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:21:30,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:21:30,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:21:30,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:21:30,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90fb180caa8b6a5816e65dbd5894ace691fe27eeb9d4238d5c5bc9791f06c4a2 [2024-10-12 16:21:30,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:21:30,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:21:30,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:21:30,513 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:21:30,513 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:21:30,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label04.c [2024-10-12 16:21:31,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:21:32,074 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:21:32,074 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label04.c [2024-10-12 16:21:32,103 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c3c0376/026559f98a4b426ea3b1b82b266b399d/FLAG14049748b [2024-10-12 16:21:32,115 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c3c0376/026559f98a4b426ea3b1b82b266b399d [2024-10-12 16:21:32,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:21:32,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:21:32,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:21:32,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:21:32,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:21:32,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:32,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bea8d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32, skipping insertion in model container [2024-10-12 16:21:32,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:32,185 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:21:32,361 WARN L248 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/Problem16_label04.c[3124,3137] [2024-10-12 16:21:32,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:21:32,632 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:21:32,644 WARN L248 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/Problem16_label04.c[3124,3137] [2024-10-12 16:21:32,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:21:32,769 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:21:32,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32 WrapperNode [2024-10-12 16:21:32,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:21:32,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:21:32,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:21:32,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:21:32,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:32,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:32,961 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-10-12 16:21:32,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:21:32,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:21:32,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:21:32,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:21:32,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:32,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:33,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:33,072 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]. [2024-10-12 16:21:33,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:33,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:33,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:33,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:33,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:33,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:33,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:21:33,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:21:33,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:21:33,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:21:33,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (1/1) ... [2024-10-12 16:21:33,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:21:33,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:21:33,182 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) [2024-10-12 16:21:33,184 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 [2024-10-12 16:21:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:21:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:21:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:21:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:21:33,278 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:21:33,280 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:21:34,911 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-10-12 16:21:34,914 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:21:34,964 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:21:34,964 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:21:34,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:21:34 BoogieIcfgContainer [2024-10-12 16:21:34,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:21:34,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:21:34,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:21:34,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:21:34,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:21:32" (1/3) ... [2024-10-12 16:21:34,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd792de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:21:34, skipping insertion in model container [2024-10-12 16:21:34,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:21:32" (2/3) ... [2024-10-12 16:21:34,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd792de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:21:34, skipping insertion in model container [2024-10-12 16:21:34,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:21:34" (3/3) ... [2024-10-12 16:21:34,970 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label04.c [2024-10-12 16:21:34,984 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:21:34,984 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:21:35,042 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:21:35,048 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;@402eef71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:21:35,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:21:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 16:21:35,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:35,058 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] [2024-10-12 16:21:35,058 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:35,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:35,063 INFO L85 PathProgramCache]: Analyzing trace with hash 116366267, now seen corresponding path program 1 times [2024-10-12 16:21:35,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:35,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925183772] [2024-10-12 16:21:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:35,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925183772] [2024-10-12 16:21:35,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925183772] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:35,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:35,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:21:35,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475579377] [2024-10-12 16:21:35,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:35,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:21:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:35,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:21:35,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:21:35,257 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:35,312 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2024-10-12 16:21:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:21:35,317 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-10-12 16:21:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:35,330 INFO L225 Difference]: With dead ends: 667 [2024-10-12 16:21:35,330 INFO L226 Difference]: Without dead ends: 332 [2024-10-12 16:21:35,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:21:35,339 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:35,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:21:35,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-12 16:21:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2024-10-12 16:21:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2024-10-12 16:21:35,391 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 27 [2024-10-12 16:21:35,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:35,391 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2024-10-12 16:21:35,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2024-10-12 16:21:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 16:21:35,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:35,392 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] [2024-10-12 16:21:35,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:21:35,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:35,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:35,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1179162073, now seen corresponding path program 1 times [2024-10-12 16:21:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382129135] [2024-10-12 16:21:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:35,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:35,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382129135] [2024-10-12 16:21:35,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382129135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:35,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:35,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:35,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294200797] [2024-10-12 16:21:35,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:35,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:21:35,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:35,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:21:35,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:21:35,598 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:37,921 INFO L93 Difference]: Finished difference Result 1321 states and 2379 transitions. [2024-10-12 16:21:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:21:37,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-10-12 16:21:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:37,926 INFO L225 Difference]: With dead ends: 1321 [2024-10-12 16:21:37,927 INFO L226 Difference]: Without dead ends: 990 [2024-10-12 16:21:37,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:21:37,929 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 962 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 2668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:37,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 275 Invalid, 2668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:21:37,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-10-12 16:21:37,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 990. [2024-10-12 16:21:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.4863498483316482) internal successors, (1470), 989 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1470 transitions. [2024-10-12 16:21:37,970 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1470 transitions. Word has length 27 [2024-10-12 16:21:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:37,971 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1470 transitions. [2024-10-12 16:21:37,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1470 transitions. [2024-10-12 16:21:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-12 16:21:37,975 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:37,975 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 16:21:37,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:21:37,976 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:37,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:37,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1007685100, now seen corresponding path program 1 times [2024-10-12 16:21:37,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:37,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703095399] [2024-10-12 16:21:37,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:37,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 16:21:38,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:38,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703095399] [2024-10-12 16:21:38,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703095399] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:38,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:38,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:21:38,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854006178] [2024-10-12 16:21:38,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:38,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:38,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:38,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:38,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:38,154 INFO L87 Difference]: Start difference. First operand 990 states and 1470 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:39,172 INFO L93 Difference]: Finished difference Result 2308 states and 3725 transitions. [2024-10-12 16:21:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:39,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-10-12 16:21:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:39,177 INFO L225 Difference]: With dead ends: 2308 [2024-10-12 16:21:39,177 INFO L226 Difference]: Without dead ends: 1648 [2024-10-12 16:21:39,178 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 [2024-10-12 16:21:39,179 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 280 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:39,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 197 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:21:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2024-10-12 16:21:39,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2024-10-12 16:21:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1647 states have (on average 1.379477838494232) internal successors, (2272), 1647 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2272 transitions. [2024-10-12 16:21:39,214 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2272 transitions. Word has length 114 [2024-10-12 16:21:39,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:39,214 INFO L471 AbstractCegarLoop]: Abstraction has 1648 states and 2272 transitions. [2024-10-12 16:21:39,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:39,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2272 transitions. [2024-10-12 16:21:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-12 16:21:39,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:39,222 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:21:39,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:21:39,223 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:39,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash 228938395, now seen corresponding path program 1 times [2024-10-12 16:21:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:39,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506333182] [2024-10-12 16:21:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:39,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 16:21:39,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506333182] [2024-10-12 16:21:39,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506333182] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:39,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:39,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:21:39,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043849935] [2024-10-12 16:21:39,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:39,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:39,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:39,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:39,416 INFO L87 Difference]: Start difference. First operand 1648 states and 2272 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:40,473 INFO L93 Difference]: Finished difference Result 4282 states and 6131 transitions. [2024-10-12 16:21:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:40,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 193 [2024-10-12 16:21:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:40,481 INFO L225 Difference]: With dead ends: 4282 [2024-10-12 16:21:40,482 INFO L226 Difference]: Without dead ends: 2964 [2024-10-12 16:21:40,483 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 [2024-10-12 16:21:40,486 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 358 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:40,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 154 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:21:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2024-10-12 16:21:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2635. [2024-10-12 16:21:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.340167046317388) internal successors, (3530), 2634 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3530 transitions. [2024-10-12 16:21:40,526 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3530 transitions. Word has length 193 [2024-10-12 16:21:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:40,528 INFO L471 AbstractCegarLoop]: Abstraction has 2635 states and 3530 transitions. [2024-10-12 16:21:40,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3530 transitions. [2024-10-12 16:21:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-10-12 16:21:40,534 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:40,534 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:21:40,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:21:40,535 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:40,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:40,535 INFO L85 PathProgramCache]: Analyzing trace with hash 61158649, now seen corresponding path program 1 times [2024-10-12 16:21:40,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:40,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940681989] [2024-10-12 16:21:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 16:21:40,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:40,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940681989] [2024-10-12 16:21:40,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940681989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:40,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:40,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:21:40,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386637105] [2024-10-12 16:21:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:40,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:40,711 INFO L87 Difference]: Start difference. First operand 2635 states and 3530 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:41,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:41,706 INFO L93 Difference]: Finished difference Result 5598 states and 7526 transitions. [2024-10-12 16:21:41,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:41,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 269 [2024-10-12 16:21:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:41,716 INFO L225 Difference]: With dead ends: 5598 [2024-10-12 16:21:41,716 INFO L226 Difference]: Without dead ends: 3293 [2024-10-12 16:21:41,721 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 [2024-10-12 16:21:41,722 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 278 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:41,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 75 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:21:41,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2024-10-12 16:21:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3293. [2024-10-12 16:21:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 3292 states have (on average 1.2247873633049817) internal successors, (4032), 3292 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 4032 transitions. [2024-10-12 16:21:41,774 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 4032 transitions. Word has length 269 [2024-10-12 16:21:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:41,774 INFO L471 AbstractCegarLoop]: Abstraction has 3293 states and 4032 transitions. [2024-10-12 16:21:41,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 4032 transitions. [2024-10-12 16:21:41,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-10-12 16:21:41,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:41,780 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2024-10-12 16:21:41,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:21:41,780 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:41,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1334023197, now seen corresponding path program 1 times [2024-10-12 16:21:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:41,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635218268] [2024-10-12 16:21:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-10-12 16:21:42,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:42,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635218268] [2024-10-12 16:21:42,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635218268] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:42,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:42,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:42,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670217018] [2024-10-12 16:21:42,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:42,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:42,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:42,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:42,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:42,091 INFO L87 Difference]: Start difference. First operand 3293 states and 4032 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:43,048 INFO L93 Difference]: Finished difference Result 6585 states and 8075 transitions. [2024-10-12 16:21:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:43,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 446 [2024-10-12 16:21:43,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:43,064 INFO L225 Difference]: With dead ends: 6585 [2024-10-12 16:21:43,065 INFO L226 Difference]: Without dead ends: 3293 [2024-10-12 16:21:43,071 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 [2024-10-12 16:21:43,076 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 288 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:43,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 535 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:21:43,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2024-10-12 16:21:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3293. [2024-10-12 16:21:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 3292 states have (on average 1.0568043742405833) internal successors, (3479), 3292 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 3479 transitions. [2024-10-12 16:21:43,138 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 3479 transitions. Word has length 446 [2024-10-12 16:21:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:43,138 INFO L471 AbstractCegarLoop]: Abstraction has 3293 states and 3479 transitions. [2024-10-12 16:21:43,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 3479 transitions. [2024-10-12 16:21:43,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-10-12 16:21:43,143 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:43,144 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:21:43,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:21:43,144 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:43,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2036459747, now seen corresponding path program 1 times [2024-10-12 16:21:43,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:43,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816792056] [2024-10-12 16:21:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 16:21:43,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:43,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816792056] [2024-10-12 16:21:43,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816792056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:43,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:43,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:43,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359543517] [2024-10-12 16:21:43,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:43,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:21:43,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:21:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:21:43,695 INFO L87 Difference]: Start difference. First operand 3293 states and 3479 transitions. Second operand has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:45,066 INFO L93 Difference]: Finished difference Result 10864 states and 11554 transitions. [2024-10-12 16:21:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:21:45,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 498 [2024-10-12 16:21:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:45,084 INFO L225 Difference]: With dead ends: 10864 [2024-10-12 16:21:45,085 INFO L226 Difference]: Without dead ends: 7901 [2024-10-12 16:21:45,089 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 [2024-10-12 16:21:45,089 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 400 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:45,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 83 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:21:45,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7901 states. [2024-10-12 16:21:45,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7901 to 7241. [2024-10-12 16:21:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7241 states, 7240 states have (on average 1.056767955801105) internal successors, (7651), 7240 states have internal predecessors, (7651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 7651 transitions. [2024-10-12 16:21:45,186 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 7651 transitions. Word has length 498 [2024-10-12 16:21:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:45,187 INFO L471 AbstractCegarLoop]: Abstraction has 7241 states and 7651 transitions. [2024-10-12 16:21:45,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 7651 transitions. [2024-10-12 16:21:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-10-12 16:21:45,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:45,196 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:45,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:21:45,196 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:45,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:45,197 INFO L85 PathProgramCache]: Analyzing trace with hash -442522127, now seen corresponding path program 1 times [2024-10-12 16:21:45,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:45,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442733375] [2024-10-12 16:21:45,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:45,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2024-10-12 16:21:45,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:45,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442733375] [2024-10-12 16:21:45,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442733375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:45,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:45,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:21:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887829847] [2024-10-12 16:21:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:45,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:45,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:45,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:45,759 INFO L87 Difference]: Start difference. First operand 7241 states and 7651 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 2 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:46,471 INFO L93 Difference]: Finished difference Result 16786 states and 17774 transitions. [2024-10-12 16:21:46,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:46,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 2 states have internal predecessors, (365), 0 states have call successors, (0), 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 594 [2024-10-12 16:21:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:46,500 INFO L225 Difference]: With dead ends: 16786 [2024-10-12 16:21:46,501 INFO L226 Difference]: Without dead ends: 9875 [2024-10-12 16:21:46,508 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 [2024-10-12 16:21:46,508 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 100 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:46,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 60 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:21:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9875 states. [2024-10-12 16:21:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9875 to 9544. [2024-10-12 16:21:46,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9544 states, 9543 states have (on average 1.056376401550875) internal successors, (10081), 9543 states have internal predecessors, (10081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9544 states to 9544 states and 10081 transitions. [2024-10-12 16:21:46,632 INFO L78 Accepts]: Start accepts. Automaton has 9544 states and 10081 transitions. Word has length 594 [2024-10-12 16:21:46,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:46,632 INFO L471 AbstractCegarLoop]: Abstraction has 9544 states and 10081 transitions. [2024-10-12 16:21:46,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 2 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9544 states and 10081 transitions. [2024-10-12 16:21:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2024-10-12 16:21:46,637 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:46,637 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:46,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:21:46,638 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:46,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:46,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1544273699, now seen corresponding path program 1 times [2024-10-12 16:21:46,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:46,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567329761] [2024-10-12 16:21:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:46,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-12 16:21:47,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:47,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567329761] [2024-10-12 16:21:47,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567329761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:47,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:47,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:47,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843518990] [2024-10-12 16:21:47,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:47,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:47,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:47,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:47,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:47,126 INFO L87 Difference]: Start difference. First operand 9544 states and 10081 transitions. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:47,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:47,757 INFO L93 Difference]: Finished difference Result 22377 states and 23787 transitions. [2024-10-12 16:21:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:47,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 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 602 [2024-10-12 16:21:47,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:47,776 INFO L225 Difference]: With dead ends: 22377 [2024-10-12 16:21:47,776 INFO L226 Difference]: Without dead ends: 13492 [2024-10-12 16:21:47,786 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 [2024-10-12 16:21:47,789 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 223 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:47,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 36 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:21:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13492 states. [2024-10-12 16:21:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13492 to 13163. [2024-10-12 16:21:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0607810363166692) internal successors, (13962), 13162 states have internal predecessors, (13962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13962 transitions. [2024-10-12 16:21:47,945 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13962 transitions. Word has length 602 [2024-10-12 16:21:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:47,946 INFO L471 AbstractCegarLoop]: Abstraction has 13163 states and 13962 transitions. [2024-10-12 16:21:47,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13962 transitions. [2024-10-12 16:21:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2024-10-12 16:21:47,954 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:47,954 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:21:47,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 16:21:47,955 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:47,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash 68950446, now seen corresponding path program 1 times [2024-10-12 16:21:47,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:47,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457341239] [2024-10-12 16:21:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:47,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 807 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-10-12 16:21:48,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457341239] [2024-10-12 16:21:48,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457341239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:48,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:48,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:48,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927615946] [2024-10-12 16:21:48,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:48,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:21:48,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:21:48,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:21:48,727 INFO L87 Difference]: Start difference. First operand 13163 states and 13962 transitions. Second operand has 4 states, 4 states have (on average 130.5) internal successors, (522), 3 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) [2024-10-12 16:21:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:49,386 INFO L93 Difference]: Finished difference Result 25667 states and 27256 transitions. [2024-10-12 16:21:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:49,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 3 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) Word has length 721 [2024-10-12 16:21:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:49,402 INFO L225 Difference]: With dead ends: 25667 [2024-10-12 16:21:49,402 INFO L226 Difference]: Without dead ends: 13163 [2024-10-12 16:21:49,448 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 [2024-10-12 16:21:49,449 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 267 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:49,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 111 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:21:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2024-10-12 16:21:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13163. [2024-10-12 16:21:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0605531074304817) internal successors, (13959), 13162 states have internal predecessors, (13959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13959 transitions. [2024-10-12 16:21:49,588 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13959 transitions. Word has length 721 [2024-10-12 16:21:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:49,589 INFO L471 AbstractCegarLoop]: Abstraction has 13163 states and 13959 transitions. [2024-10-12 16:21:49,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 3 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) [2024-10-12 16:21:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13959 transitions. [2024-10-12 16:21:49,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2024-10-12 16:21:49,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:49,597 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:21:49,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:21:49,598 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:49,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:49,598 INFO L85 PathProgramCache]: Analyzing trace with hash -10548014, now seen corresponding path program 1 times [2024-10-12 16:21:49,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:49,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463742621] [2024-10-12 16:21:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:49,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2024-10-12 16:21:50,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:50,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463742621] [2024-10-12 16:21:50,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463742621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:50,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:50,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:50,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411968211] [2024-10-12 16:21:50,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:50,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:50,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:50,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:50,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:50,031 INFO L87 Difference]: Start difference. First operand 13163 states and 13959 transitions. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:50,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:50,657 INFO L93 Difference]: Finished difference Result 28628 states and 30448 transitions. [2024-10-12 16:21:50,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:50,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 782 [2024-10-12 16:21:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:50,678 INFO L225 Difference]: With dead ends: 28628 [2024-10-12 16:21:50,678 INFO L226 Difference]: Without dead ends: 15795 [2024-10-12 16:21:50,690 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 [2024-10-12 16:21:50,690 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 220 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:50,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 434 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:21:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15795 states. [2024-10-12 16:21:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15795 to 15466. [2024-10-12 16:21:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15466 states, 15465 states have (on average 1.0477206595538313) internal successors, (16203), 15465 states have internal predecessors, (16203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:50,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15466 states to 15466 states and 16203 transitions. [2024-10-12 16:21:50,905 INFO L78 Accepts]: Start accepts. Automaton has 15466 states and 16203 transitions. Word has length 782 [2024-10-12 16:21:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:50,906 INFO L471 AbstractCegarLoop]: Abstraction has 15466 states and 16203 transitions. [2024-10-12 16:21:50,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:50,906 INFO L276 IsEmpty]: Start isEmpty. Operand 15466 states and 16203 transitions. [2024-10-12 16:21:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2024-10-12 16:21:50,920 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:50,921 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:21:50,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:21:50,921 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:50,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:50,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1641013837, now seen corresponding path program 1 times [2024-10-12 16:21:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:50,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954641298] [2024-10-12 16:21:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2024-10-12 16:21:51,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954641298] [2024-10-12 16:21:51,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954641298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:51,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:51,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:51,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598176565] [2024-10-12 16:21:51,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:51,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:51,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:51,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:51,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:51,678 INFO L87 Difference]: Start difference. First operand 15466 states and 16203 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:52,265 INFO L93 Difference]: Finished difference Result 30273 states and 31741 transitions. [2024-10-12 16:21:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:52,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 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 783 [2024-10-12 16:21:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:52,281 INFO L225 Difference]: With dead ends: 30273 [2024-10-12 16:21:52,282 INFO L226 Difference]: Without dead ends: 15466 [2024-10-12 16:21:52,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:52,293 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 339 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:52,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 374 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:21:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2024-10-12 16:21:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 14808. [2024-10-12 16:21:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14808 states, 14807 states have (on average 1.0407915175254947) internal successors, (15411), 14807 states have internal predecessors, (15411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14808 states to 14808 states and 15411 transitions. [2024-10-12 16:21:52,469 INFO L78 Accepts]: Start accepts. Automaton has 14808 states and 15411 transitions. Word has length 783 [2024-10-12 16:21:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:52,470 INFO L471 AbstractCegarLoop]: Abstraction has 14808 states and 15411 transitions. [2024-10-12 16:21:52,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 14808 states and 15411 transitions. [2024-10-12 16:21:52,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2024-10-12 16:21:52,490 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:52,491 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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] [2024-10-12 16:21:52,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:21:52,491 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:52,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:52,492 INFO L85 PathProgramCache]: Analyzing trace with hash -746501935, now seen corresponding path program 1 times [2024-10-12 16:21:52,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:52,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741017976] [2024-10-12 16:21:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:52,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 1087 proven. 0 refuted. 0 times theorem prover too weak. 1884 trivial. 0 not checked. [2024-10-12 16:21:53,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:53,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741017976] [2024-10-12 16:21:53,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741017976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:53,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:53,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:53,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763291331] [2024-10-12 16:21:53,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:53,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:53,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:53,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:53,134 INFO L87 Difference]: Start difference. First operand 14808 states and 15411 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:53,781 INFO L93 Difference]: Finished difference Result 32576 states and 33949 transitions. [2024-10-12 16:21:53,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:53,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 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 1202 [2024-10-12 16:21:53,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:53,799 INFO L225 Difference]: With dead ends: 32576 [2024-10-12 16:21:53,800 INFO L226 Difference]: Without dead ends: 16124 [2024-10-12 16:21:53,809 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 [2024-10-12 16:21:53,810 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 257 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:53,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 414 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:21:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2024-10-12 16:21:53,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 14479. [2024-10-12 16:21:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14479 states, 14478 states have (on average 1.036400055256251) internal successors, (15005), 14478 states have internal predecessors, (15005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14479 states to 14479 states and 15005 transitions. [2024-10-12 16:21:54,029 INFO L78 Accepts]: Start accepts. Automaton has 14479 states and 15005 transitions. Word has length 1202 [2024-10-12 16:21:54,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:54,030 INFO L471 AbstractCegarLoop]: Abstraction has 14479 states and 15005 transitions. [2024-10-12 16:21:54,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:54,030 INFO L276 IsEmpty]: Start isEmpty. Operand 14479 states and 15005 transitions. [2024-10-12 16:21:54,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1322 [2024-10-12 16:21:54,061 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:54,061 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-10-12 16:21:54,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 16:21:54,062 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:54,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:54,062 INFO L85 PathProgramCache]: Analyzing trace with hash -245724359, now seen corresponding path program 1 times [2024-10-12 16:21:54,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:54,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492387181] [2024-10-12 16:21:54,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:54,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4080 backedges. 2668 proven. 0 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2024-10-12 16:21:55,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:55,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492387181] [2024-10-12 16:21:55,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492387181] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:55,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:55,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:55,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085141295] [2024-10-12 16:21:55,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:55,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:55,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:55,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:55,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:55,349 INFO L87 Difference]: Start difference. First operand 14479 states and 15005 transitions. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:55,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:55,981 INFO L93 Difference]: Finished difference Result 29615 states and 30700 transitions. [2024-10-12 16:21:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:55,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 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 1321 [2024-10-12 16:21:55,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:55,999 INFO L225 Difference]: With dead ends: 29615 [2024-10-12 16:21:55,999 INFO L226 Difference]: Without dead ends: 15466 [2024-10-12 16:21:56,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:56,010 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 203 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:56,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 51 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:21:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2024-10-12 16:21:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 15466. [2024-10-12 16:21:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15466 states, 15465 states have (on average 1.0332363401228581) internal successors, (15979), 15465 states have internal predecessors, (15979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15466 states to 15466 states and 15979 transitions. [2024-10-12 16:21:56,156 INFO L78 Accepts]: Start accepts. Automaton has 15466 states and 15979 transitions. Word has length 1321 [2024-10-12 16:21:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:56,157 INFO L471 AbstractCegarLoop]: Abstraction has 15466 states and 15979 transitions. [2024-10-12 16:21:56,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 15466 states and 15979 transitions. [2024-10-12 16:21:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2024-10-12 16:21:56,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:56,236 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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] [2024-10-12 16:21:56,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:21:56,237 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:56,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:56,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1997601479, now seen corresponding path program 1 times [2024-10-12 16:21:56,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:56,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093552609] [2024-10-12 16:21:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:56,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3521 backedges. 2324 proven. 0 refuted. 0 times theorem prover too weak. 1197 trivial. 0 not checked. [2024-10-12 16:21:57,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:57,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093552609] [2024-10-12 16:21:57,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093552609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:57,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:57,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 16:21:57,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811400178] [2024-10-12 16:21:57,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:57,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 16:21:57,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:57,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 16:21:57,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:21:57,401 INFO L87 Difference]: Start difference. First operand 15466 states and 15979 transitions. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:58,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:58,580 INFO L93 Difference]: Finished difference Result 30274 states and 31294 transitions. [2024-10-12 16:21:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 16:21:58,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 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 1346 [2024-10-12 16:21:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:58,597 INFO L225 Difference]: With dead ends: 30274 [2024-10-12 16:21:58,597 INFO L226 Difference]: Without dead ends: 15467 [2024-10-12 16:21:58,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:21:58,607 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 209 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:58,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 560 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:21:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2024-10-12 16:21:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 15466. [2024-10-12 16:21:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15466 states, 15465 states have (on average 1.0325897187196895) internal successors, (15969), 15465 states have internal predecessors, (15969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15466 states to 15466 states and 15969 transitions. [2024-10-12 16:21:58,734 INFO L78 Accepts]: Start accepts. Automaton has 15466 states and 15969 transitions. Word has length 1346 [2024-10-12 16:21:58,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:58,735 INFO L471 AbstractCegarLoop]: Abstraction has 15466 states and 15969 transitions. [2024-10-12 16:21:58,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:58,736 INFO L276 IsEmpty]: Start isEmpty. Operand 15466 states and 15969 transitions. [2024-10-12 16:21:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1351 [2024-10-12 16:21:58,753 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:58,753 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:21:58,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 16:21:58,753 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:58,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash 32754800, now seen corresponding path program 1 times [2024-10-12 16:21:58,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:58,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782932924] [2024-10-12 16:21:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:58,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 2841 proven. 0 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2024-10-12 16:21:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782932924] [2024-10-12 16:21:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782932924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:59,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:59,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:59,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478164795] [2024-10-12 16:21:59,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:59,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:59,773 INFO L87 Difference]: Start difference. First operand 15466 states and 15969 transitions. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:00,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:00,499 INFO L93 Difference]: Finished difference Result 30273 states and 31273 transitions. [2024-10-12 16:22:00,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:00,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 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 1350 [2024-10-12 16:22:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:00,517 INFO L225 Difference]: With dead ends: 30273 [2024-10-12 16:22:00,517 INFO L226 Difference]: Without dead ends: 15466 [2024-10-12 16:22:00,528 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 [2024-10-12 16:22:00,528 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 192 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:00,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 421 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:22:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2024-10-12 16:22:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 15137. [2024-10-12 16:22:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.028012684989429) internal successors, (15560), 15136 states have internal predecessors, (15560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 15560 transitions. [2024-10-12 16:22:00,715 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 15560 transitions. Word has length 1350 [2024-10-12 16:22:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:00,716 INFO L471 AbstractCegarLoop]: Abstraction has 15137 states and 15560 transitions. [2024-10-12 16:22:00,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 15560 transitions. [2024-10-12 16:22:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1361 [2024-10-12 16:22:00,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:00,744 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:22:00,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:22:00,744 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:00,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash 729526594, now seen corresponding path program 1 times [2024-10-12 16:22:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:00,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584431912] [2024-10-12 16:22:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:00,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3368 backedges. 2260 proven. 0 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2024-10-12 16:22:02,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:02,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584431912] [2024-10-12 16:22:02,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584431912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:02,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:22:02,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:22:02,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716492617] [2024-10-12 16:22:02,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:02,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:22:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:22:02,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:22:02,011 INFO L87 Difference]: Start difference. First operand 15137 states and 15560 transitions. Second operand has 4 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:02,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:02,786 INFO L93 Difference]: Finished difference Result 29627 states and 30467 transitions. [2024-10-12 16:22:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 16:22:02,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 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 1360 [2024-10-12 16:22:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:02,800 INFO L225 Difference]: With dead ends: 29627 [2024-10-12 16:22:02,800 INFO L226 Difference]: Without dead ends: 15149 [2024-10-12 16:22:02,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:22:02,810 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 218 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:02,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 435 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:22:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15149 states. [2024-10-12 16:22:02,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15149 to 15137. [2024-10-12 16:22:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.0278805496828753) internal successors, (15558), 15136 states have internal predecessors, (15558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 15558 transitions. [2024-10-12 16:22:02,921 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 15558 transitions. Word has length 1360 [2024-10-12 16:22:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:02,921 INFO L471 AbstractCegarLoop]: Abstraction has 15137 states and 15558 transitions. [2024-10-12 16:22:02,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:02,922 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 15558 transitions. [2024-10-12 16:22:02,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1381 [2024-10-12 16:22:02,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:02,936 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:22:02,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 16:22:02,937 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:02,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:02,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1878595225, now seen corresponding path program 1 times [2024-10-12 16:22:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:02,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684998880] [2024-10-12 16:22:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:02,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4269 backedges. 2342 proven. 258 refuted. 0 times theorem prover too weak. 1669 trivial. 0 not checked. [2024-10-12 16:22:04,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:04,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684998880] [2024-10-12 16:22:04,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684998880] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:04,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135824470] [2024-10-12 16:22:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:04,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:04,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:04,348 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) [2024-10-12 16:22:04,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:22:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:04,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:22:04,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4269 backedges. 2363 proven. 0 refuted. 0 times theorem prover too weak. 1906 trivial. 0 not checked. [2024-10-12 16:22:05,071 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:05,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135824470] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:05,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:05,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 16:22:05,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661432505] [2024-10-12 16:22:05,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:05,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:05,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:05,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:05,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:22:05,074 INFO L87 Difference]: Start difference. First operand 15137 states and 15558 transitions. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:05,897 INFO L93 Difference]: Finished difference Result 32247 states and 33145 transitions. [2024-10-12 16:22:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:05,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 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 1380 [2024-10-12 16:22:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:05,916 INFO L225 Difference]: With dead ends: 32247 [2024-10-12 16:22:05,916 INFO L226 Difference]: Without dead ends: 17440 [2024-10-12 16:22:05,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1385 GetRequests, 1379 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:22:05,928 INFO L432 NwaCegarLoop]: 417 mSDtfsCounter, 225 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:05,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 422 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:22:05,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17440 states. [2024-10-12 16:22:06,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17440 to 16782. [2024-10-12 16:22:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 1.0256838090697813) internal successors, (17212), 16781 states have internal predecessors, (17212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 17212 transitions. [2024-10-12 16:22:06,077 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 17212 transitions. Word has length 1380 [2024-10-12 16:22:06,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:06,078 INFO L471 AbstractCegarLoop]: Abstraction has 16782 states and 17212 transitions. [2024-10-12 16:22:06,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 17212 transitions. [2024-10-12 16:22:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1519 [2024-10-12 16:22:06,097 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:06,097 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2024-10-12 16:22:06,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 16:22:06,298 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,SelfDestructingSolverStorable17 [2024-10-12 16:22:06,299 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:06,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:06,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1198018292, now seen corresponding path program 1 times [2024-10-12 16:22:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:06,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147320176] [2024-10-12 16:22:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:06,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 2486 proven. 258 refuted. 0 times theorem prover too weak. 1517 trivial. 0 not checked. [2024-10-12 16:22:08,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:08,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147320176] [2024-10-12 16:22:08,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147320176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:08,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826712951] [2024-10-12 16:22:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:08,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:08,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:08,160 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) [2024-10-12 16:22:08,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:22:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:08,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:22:08,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 1317 proven. 0 refuted. 0 times theorem prover too weak. 2944 trivial. 0 not checked. [2024-10-12 16:22:08,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:08,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826712951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:08,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:08,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 16:22:08,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036715013] [2024-10-12 16:22:08,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:08,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:08,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:08,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:08,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:22:08,745 INFO L87 Difference]: Start difference. First operand 16782 states and 17212 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:09,416 INFO L93 Difference]: Finished difference Result 33234 states and 34092 transitions. [2024-10-12 16:22:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:09,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 1518 [2024-10-12 16:22:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:09,434 INFO L225 Difference]: With dead ends: 33234 [2024-10-12 16:22:09,434 INFO L226 Difference]: Without dead ends: 16782 [2024-10-12 16:22:09,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1523 GetRequests, 1517 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:22:09,446 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 143 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:09,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 361 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:22:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16782 states. [2024-10-12 16:22:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16782 to 16124. [2024-10-12 16:22:09,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 1.0205917012962848) internal successors, (16455), 16123 states have internal predecessors, (16455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 16455 transitions. [2024-10-12 16:22:09,576 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 16455 transitions. Word has length 1518 [2024-10-12 16:22:09,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:09,576 INFO L471 AbstractCegarLoop]: Abstraction has 16124 states and 16455 transitions. [2024-10-12 16:22:09,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 16455 transitions. [2024-10-12 16:22:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1677 [2024-10-12 16:22:09,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:09,598 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:22:09,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 16:22:09,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:09,799 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:09,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash -565269516, now seen corresponding path program 1 times [2024-10-12 16:22:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:09,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122284026] [2024-10-12 16:22:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4589 backedges. 2648 proven. 258 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2024-10-12 16:22:11,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:11,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122284026] [2024-10-12 16:22:11,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122284026] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:11,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229877830] [2024-10-12 16:22:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:11,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:11,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:11,551 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) [2024-10-12 16:22:11,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 16:22:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:11,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 16:22:11,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4589 backedges. 3116 proven. 0 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2024-10-12 16:22:13,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:13,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229877830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:13,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:13,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-12 16:22:13,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131063887] [2024-10-12 16:22:13,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:13,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:22:13,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:22:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:22:13,321 INFO L87 Difference]: Start difference. First operand 16124 states and 16455 transitions. Second operand has 4 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:14,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:14,052 INFO L93 Difference]: Finished difference Result 31589 states and 32247 transitions. [2024-10-12 16:22:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:22:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 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 1676 [2024-10-12 16:22:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:14,066 INFO L225 Difference]: With dead ends: 31589 [2024-10-12 16:22:14,066 INFO L226 Difference]: Without dead ends: 16124 [2024-10-12 16:22:14,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1683 GetRequests, 1675 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-12 16:22:14,075 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 120 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:14,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 552 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:22:14,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2024-10-12 16:22:14,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 16124. [2024-10-12 16:22:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 1.0203436085095825) internal successors, (16451), 16123 states have internal predecessors, (16451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:14,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 16451 transitions. [2024-10-12 16:22:14,197 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 16451 transitions. Word has length 1676 [2024-10-12 16:22:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:14,197 INFO L471 AbstractCegarLoop]: Abstraction has 16124 states and 16451 transitions. [2024-10-12 16:22:14,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 16451 transitions. [2024-10-12 16:22:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1866 [2024-10-12 16:22:14,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:14,220 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:22:14,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 16:22:14,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:14,421 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:14,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:14,421 INFO L85 PathProgramCache]: Analyzing trace with hash -511387842, now seen corresponding path program 1 times [2024-10-12 16:22:14,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:14,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395739185] [2024-10-12 16:22:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:14,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2747 proven. 1840 refuted. 0 times theorem prover too weak. 1245 trivial. 0 not checked. [2024-10-12 16:22:17,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:17,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395739185] [2024-10-12 16:22:17,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395739185] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:17,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112353703] [2024-10-12 16:22:17,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:17,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:17,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:17,310 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) [2024-10-12 16:22:17,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 16:22:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:17,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 2124 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:22:17,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2982 proven. 0 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2024-10-12 16:22:17,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:17,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112353703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:17,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:17,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 16:22:17,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420126041] [2024-10-12 16:22:17,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:17,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:17,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:17,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:22:17,955 INFO L87 Difference]: Start difference. First operand 16124 states and 16451 transitions. Second operand has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:18,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:18,569 INFO L93 Difference]: Finished difference Result 31918 states and 32577 transitions. [2024-10-12 16:22:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:18,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 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 1865 [2024-10-12 16:22:18,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:18,584 INFO L225 Difference]: With dead ends: 31918 [2024-10-12 16:22:18,585 INFO L226 Difference]: Without dead ends: 16453 [2024-10-12 16:22:18,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1872 GetRequests, 1868 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:22:18,595 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 97 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:18,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 51 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:22:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16453 states. [2024-10-12 16:22:18,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16453 to 16453. [2024-10-12 16:22:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16453 states, 16452 states have (on average 1.0201799173352784) internal successors, (16784), 16452 states have internal predecessors, (16784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16453 states to 16453 states and 16784 transitions. [2024-10-12 16:22:18,723 INFO L78 Accepts]: Start accepts. Automaton has 16453 states and 16784 transitions. Word has length 1865 [2024-10-12 16:22:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:18,724 INFO L471 AbstractCegarLoop]: Abstraction has 16453 states and 16784 transitions. [2024-10-12 16:22:18,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 16453 states and 16784 transitions. [2024-10-12 16:22:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1873 [2024-10-12 16:22:18,745 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:18,746 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:22:18,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 16:22:18,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:18,946 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:18,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash -653141797, now seen corresponding path program 1 times [2024-10-12 16:22:18,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:18,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880361552] [2024-10-12 16:22:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6422 backedges. 1646 proven. 0 refuted. 0 times theorem prover too weak. 4776 trivial. 0 not checked. [2024-10-12 16:22:21,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:21,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880361552] [2024-10-12 16:22:21,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880361552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:21,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:22:21,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:22:21,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039140800] [2024-10-12 16:22:21,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:21,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:22:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:21,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:22:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:22:21,115 INFO L87 Difference]: Start difference. First operand 16453 states and 16784 transitions. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:22,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:22,045 INFO L93 Difference]: Finished difference Result 33900 states and 34587 transitions. [2024-10-12 16:22:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:22:22,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 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 1872 [2024-10-12 16:22:22,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:22,063 INFO L225 Difference]: With dead ends: 33900 [2024-10-12 16:22:22,063 INFO L226 Difference]: Without dead ends: 18098 [2024-10-12 16:22:22,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:22:22,074 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 138 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:22,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 28 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:22:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18098 states. [2024-10-12 16:22:22,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18098 to 16453. [2024-10-12 16:22:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16453 states, 16452 states have (on average 1.0199975686846583) internal successors, (16781), 16452 states have internal predecessors, (16781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16453 states to 16453 states and 16781 transitions. [2024-10-12 16:22:22,230 INFO L78 Accepts]: Start accepts. Automaton has 16453 states and 16781 transitions. Word has length 1872 [2024-10-12 16:22:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:22,231 INFO L471 AbstractCegarLoop]: Abstraction has 16453 states and 16781 transitions. [2024-10-12 16:22:22,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 16453 states and 16781 transitions. [2024-10-12 16:22:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1912 [2024-10-12 16:22:22,255 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:22,255 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-10-12 16:22:22,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 16:22:22,255 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:22,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:22,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1942866275, now seen corresponding path program 1 times [2024-10-12 16:22:22,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:22,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008561168] [2024-10-12 16:22:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:22,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6603 backedges. 3458 proven. 0 refuted. 0 times theorem prover too weak. 3145 trivial. 0 not checked. [2024-10-12 16:22:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008561168] [2024-10-12 16:22:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008561168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:23,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:22:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:22:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079573633] [2024-10-12 16:22:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:23,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:22:23,928 INFO L87 Difference]: Start difference. First operand 16453 states and 16781 transitions. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:24,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:24,576 INFO L93 Difference]: Finished difference Result 35537 states and 36250 transitions. [2024-10-12 16:22:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:24,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 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 1911 [2024-10-12 16:22:24,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:24,596 INFO L225 Difference]: With dead ends: 35537 [2024-10-12 16:22:24,596 INFO L226 Difference]: Without dead ends: 19743 [2024-10-12 16:22:24,608 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 [2024-10-12 16:22:24,608 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 208 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:24,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 41 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:22:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19743 states. [2024-10-12 16:22:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19743 to 18098. [2024-10-12 16:22:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18098 states, 18097 states have (on average 1.0196165110239266) internal successors, (18452), 18097 states have internal predecessors, (18452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18098 states to 18098 states and 18452 transitions. [2024-10-12 16:22:24,776 INFO L78 Accepts]: Start accepts. Automaton has 18098 states and 18452 transitions. Word has length 1911 [2024-10-12 16:22:24,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:24,776 INFO L471 AbstractCegarLoop]: Abstraction has 18098 states and 18452 transitions. [2024-10-12 16:22:24,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand 18098 states and 18452 transitions. [2024-10-12 16:22:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1915 [2024-10-12 16:22:24,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:24,800 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2024-10-12 16:22:24,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 16:22:24,800 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:24,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash 459717727, now seen corresponding path program 1 times [2024-10-12 16:22:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:24,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090978692] [2024-10-12 16:22:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:24,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6522 backedges. 3339 proven. 258 refuted. 0 times theorem prover too weak. 2925 trivial. 0 not checked. [2024-10-12 16:22:26,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:26,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090978692] [2024-10-12 16:22:26,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090978692] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:26,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067803281] [2024-10-12 16:22:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:26,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:26,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:26,863 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) [2024-10-12 16:22:26,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 16:22:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:27,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:22:27,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6522 backedges. 3502 proven. 0 refuted. 0 times theorem prover too weak. 3020 trivial. 0 not checked. [2024-10-12 16:22:27,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067803281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:27,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:27,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 16:22:27,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90734125] [2024-10-12 16:22:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:27,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:22:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:27,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:22:27,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:22:27,988 INFO L87 Difference]: Start difference. First operand 18098 states and 18452 transitions. Second operand has 4 states, 4 states have (on average 203.25) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:28,786 INFO L93 Difference]: Finished difference Result 35537 states and 36241 transitions. [2024-10-12 16:22:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:22:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 203.25) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 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 1914 [2024-10-12 16:22:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:28,804 INFO L225 Difference]: With dead ends: 35537 [2024-10-12 16:22:28,804 INFO L226 Difference]: Without dead ends: 18098 [2024-10-12 16:22:28,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1919 GetRequests, 1912 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:22:28,816 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 296 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:28,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 33 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:22:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18098 states. [2024-10-12 16:22:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18098 to 17769. [2024-10-12 16:22:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17769 states, 17768 states have (on average 1.0195294912201711) internal successors, (18115), 17768 states have internal predecessors, (18115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17769 states to 17769 states and 18115 transitions. [2024-10-12 16:22:28,963 INFO L78 Accepts]: Start accepts. Automaton has 17769 states and 18115 transitions. Word has length 1914 [2024-10-12 16:22:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:28,963 INFO L471 AbstractCegarLoop]: Abstraction has 17769 states and 18115 transitions. [2024-10-12 16:22:28,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.25) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 17769 states and 18115 transitions. [2024-10-12 16:22:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1953 [2024-10-12 16:22:28,987 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:28,987 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2024-10-12 16:22:29,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 16:22:29,188 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,SelfDestructingSolverStorable23 [2024-10-12 16:22:29,188 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:29,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:29,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1635774540, now seen corresponding path program 1 times [2024-10-12 16:22:29,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:29,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852189472] [2024-10-12 16:22:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:29,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7277 backedges. 5380 proven. 41 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked. [2024-10-12 16:22:31,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:31,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852189472] [2024-10-12 16:22:31,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852189472] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:31,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127073232] [2024-10-12 16:22:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:31,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:31,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:31,354 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) [2024-10-12 16:22:31,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 16:22:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:31,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 2257 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:22:31,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7277 backedges. 4038 proven. 0 refuted. 0 times theorem prover too weak. 3239 trivial. 0 not checked. [2024-10-12 16:22:32,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:32,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127073232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:32,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:32,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 16:22:32,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795121280] [2024-10-12 16:22:32,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:32,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:32,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:32,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:22:32,088 INFO L87 Difference]: Start difference. First operand 17769 states and 18115 transitions. Second operand has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:32,674 INFO L93 Difference]: Finished difference Result 35208 states and 35903 transitions. [2024-10-12 16:22:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:32,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 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 1952 [2024-10-12 16:22:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:32,691 INFO L225 Difference]: With dead ends: 35208 [2024-10-12 16:22:32,691 INFO L226 Difference]: Without dead ends: 18098 [2024-10-12 16:22:32,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1956 GetRequests, 1952 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:22:32,703 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 120 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:32,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 423 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 16:22:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18098 states. [2024-10-12 16:22:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18098 to 18098. [2024-10-12 16:22:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18098 states, 18097 states have (on average 1.019119191026137) internal successors, (18443), 18097 states have internal predecessors, (18443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18098 states to 18098 states and 18443 transitions. [2024-10-12 16:22:32,859 INFO L78 Accepts]: Start accepts. Automaton has 18098 states and 18443 transitions. Word has length 1952 [2024-10-12 16:22:32,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:32,860 INFO L471 AbstractCegarLoop]: Abstraction has 18098 states and 18443 transitions. [2024-10-12 16:22:32,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:32,860 INFO L276 IsEmpty]: Start isEmpty. Operand 18098 states and 18443 transitions. [2024-10-12 16:22:32,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1974 [2024-10-12 16:22:32,883 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:32,884 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:22:32,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 16:22:33,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:33,085 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:33,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:33,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2042777326, now seen corresponding path program 1 times [2024-10-12 16:22:33,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:33,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504825779] [2024-10-12 16:22:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:33,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 5050 proven. 140 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. [2024-10-12 16:22:34,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:34,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504825779] [2024-10-12 16:22:34,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504825779] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:34,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038286356] [2024-10-12 16:22:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:34,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:34,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:34,980 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) [2024-10-12 16:22:34,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 16:22:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:35,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:22:35,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 4241 proven. 0 refuted. 0 times theorem prover too weak. 2861 trivial. 0 not checked. [2024-10-12 16:22:35,480 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:22:35,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038286356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:22:35,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:22:35,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 16:22:35,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882446163] [2024-10-12 16:22:35,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:22:35,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:22:35,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:22:35,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:22:35,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:22:35,483 INFO L87 Difference]: Start difference. First operand 18098 states and 18443 transitions. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:22:36,119 INFO L93 Difference]: Finished difference Result 37840 states and 38579 transitions. [2024-10-12 16:22:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:22:36,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 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 1973 [2024-10-12 16:22:36,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:22:36,139 INFO L225 Difference]: With dead ends: 37840 [2024-10-12 16:22:36,139 INFO L226 Difference]: Without dead ends: 20401 [2024-10-12 16:22:36,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1978 GetRequests, 1973 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:22:36,152 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 221 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:22:36,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 423 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:22:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20401 states. [2024-10-12 16:22:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20401 to 19743. [2024-10-12 16:22:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19743 states, 19742 states have (on average 1.0184885016715632) internal successors, (20107), 19742 states have internal predecessors, (20107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19743 states to 19743 states and 20107 transitions. [2024-10-12 16:22:36,332 INFO L78 Accepts]: Start accepts. Automaton has 19743 states and 20107 transitions. Word has length 1973 [2024-10-12 16:22:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:22:36,332 INFO L471 AbstractCegarLoop]: Abstraction has 19743 states and 20107 transitions. [2024-10-12 16:22:36,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:22:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 19743 states and 20107 transitions. [2024-10-12 16:22:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2051 [2024-10-12 16:22:36,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:22:36,359 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:22:36,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 16:22:36,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:36,560 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:22:36,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:22:36,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1473934250, now seen corresponding path program 1 times [2024-10-12 16:22:36,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:22:36,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066164016] [2024-10-12 16:22:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:36,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:22:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7277 backedges. 5266 proven. 140 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2024-10-12 16:22:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:22:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066164016] [2024-10-12 16:22:38,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066164016] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:22:38,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74657269] [2024-10-12 16:22:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:22:38,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:22:38,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:22:38,579 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:22:38,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 16:22:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:22:39,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 16:22:39,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:22:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7277 backedges. 4624 proven. 67 refuted. 0 times theorem prover too weak. 2586 trivial. 0 not checked. [2024-10-12 16:22:49,565 INFO L311 TraceCheckSpWp]: Computing backward predicates...