./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem11_label45.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem11_label45.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 9cd15529a9b2dd098d5ccb70769668148a833250f0918a0771464210899319de --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:23:30,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:23:30,950 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:23:30,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:23:30,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:23:30,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:23:30,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:23:30,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:23:30,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:23:30,988 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:23:30,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:23:30,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:23:30,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:23:30,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:23:30,989 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:23:30,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:23:30,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:23:30,993 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:23:30,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:23:30,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:23:30,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:23:30,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:23:30,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:23:30,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:23:30,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:23:30,998 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:23:30,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:23:30,999 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:23:30,999 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:23:30,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:23:30,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:23:31,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:23:31,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:23:31,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:23:31,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:23:31,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:23:31,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:23:31,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:23:31,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:23:31,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:23:31,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:23:31,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:23:31,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cd15529a9b2dd098d5ccb70769668148a833250f0918a0771464210899319de [2024-11-09 19:23:31,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:23:31,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:23:31,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:23:31,259 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:23:31,259 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:23:31,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label45.c [2024-11-09 19:23:32,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:23:32,939 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:23:32,943 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label45.c [2024-11-09 19:23:32,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32a8e4965/413801aba8274450acf8569485357acf/FLAGf7302c939 [2024-11-09 19:23:33,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32a8e4965/413801aba8274450acf8569485357acf [2024-11-09 19:23:33,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:23:33,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:23:33,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:23:33,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:23:33,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:23:33,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:33,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8945d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33, skipping insertion in model container [2024-11-09 19:23:33,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:33,274 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:23:33,533 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label45.c[4714,4727] [2024-11-09 19:23:33,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:23:33,747 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:23:33,774 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label45.c[4714,4727] [2024-11-09 19:23:33,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:23:33,911 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:23:33,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33 WrapperNode [2024-11-09 19:23:33,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:23:33,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:23:33,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:23:33,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:23:33,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:33,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,041 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2024-11-09 19:23:34,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:23:34,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:23:34,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:23:34,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:23:34,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,120 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:23:34,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,167 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:23:34,222 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:23:34,222 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:23:34,222 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:23:34,223 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (1/1) ... [2024-11-09 19:23:34,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:23:34,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:23:34,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:23:34,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:23:34,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:23:34,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:23:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:23:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:23:34,387 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:23:34,389 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:23:36,141 INFO L? ?]: Removed 248 outVars from TransFormulas that were not future-live. [2024-11-09 19:23:36,142 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:23:36,171 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:23:36,171 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:23:36,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:23:36 BoogieIcfgContainer [2024-11-09 19:23:36,172 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:23:36,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:23:36,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:23:36,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:23:36,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:23:33" (1/3) ... [2024-11-09 19:23:36,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5d2c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:23:36, skipping insertion in model container [2024-11-09 19:23:36,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:33" (2/3) ... [2024-11-09 19:23:36,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5d2c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:23:36, skipping insertion in model container [2024-11-09 19:23:36,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:23:36" (3/3) ... [2024-11-09 19:23:36,184 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label45.c [2024-11-09 19:23:36,200 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:23:36,200 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:23:36,280 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:23:36,288 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;@c20edae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:23:36,289 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:23:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 284 states have (on average 2.1267605633802815) internal successors, (604), 285 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 19:23:36,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:36,305 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:36,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:36,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:36,312 INFO L85 PathProgramCache]: Analyzing trace with hash 190699281, now seen corresponding path program 1 times [2024-11-09 19:23:36,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:36,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949621048] [2024-11-09 19:23:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:36,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:36,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949621048] [2024-11-09 19:23:36,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949621048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:36,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:36,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:23:36,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574495528] [2024-11-09 19:23:36,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:36,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:36,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:36,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:36,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:36,736 INFO L87 Difference]: Start difference. First operand has 286 states, 284 states have (on average 2.1267605633802815) internal successors, (604), 285 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:38,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:38,128 INFO L93 Difference]: Finished difference Result 782 states and 1726 transitions. [2024-11-09 19:23:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:38,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-11-09 19:23:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:38,147 INFO L225 Difference]: With dead ends: 782 [2024-11-09 19:23:38,148 INFO L226 Difference]: Without dead ends: 416 [2024-11-09 19:23:38,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:38,157 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 314 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:38,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 200 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:23:38,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-09 19:23:38,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 414. [2024-11-09 19:23:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.0314769975786926) internal successors, (839), 413 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 839 transitions. [2024-11-09 19:23:38,234 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 839 transitions. Word has length 34 [2024-11-09 19:23:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:38,235 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 839 transitions. [2024-11-09 19:23:38,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 839 transitions. [2024-11-09 19:23:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 19:23:38,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:38,238 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:38,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:23:38,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:38,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1268533033, now seen corresponding path program 1 times [2024-11-09 19:23:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:38,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869984150] [2024-11-09 19:23:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:38,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:38,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:38,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869984150] [2024-11-09 19:23:38,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869984150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:38,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:38,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:23:38,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124584717] [2024-11-09 19:23:38,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:38,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:38,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:38,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:38,441 INFO L87 Difference]: Start difference. First operand 414 states and 839 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:39,384 INFO L93 Difference]: Finished difference Result 1217 states and 2487 transitions. [2024-11-09 19:23:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:39,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2024-11-09 19:23:39,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:39,389 INFO L225 Difference]: With dead ends: 1217 [2024-11-09 19:23:39,389 INFO L226 Difference]: Without dead ends: 805 [2024-11-09 19:23:39,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:39,394 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 264 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:39,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 124 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:23:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-09 19:23:39,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 792. [2024-11-09 19:23:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 1.9848293299620734) internal successors, (1570), 791 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1570 transitions. [2024-11-09 19:23:39,433 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1570 transitions. Word has length 103 [2024-11-09 19:23:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:39,434 INFO L471 AbstractCegarLoop]: Abstraction has 792 states and 1570 transitions. [2024-11-09 19:23:39,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1570 transitions. [2024-11-09 19:23:39,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-09 19:23:39,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:39,437 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, 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] [2024-11-09 19:23:39,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:23:39,438 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:39,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:39,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1312522431, now seen corresponding path program 1 times [2024-11-09 19:23:39,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:39,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357402513] [2024-11-09 19:23:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:39,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:39,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:39,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357402513] [2024-11-09 19:23:39,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357402513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:39,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:39,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:23:39,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028615867] [2024-11-09 19:23:39,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:39,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:23:39,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:39,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:23:39,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:39,908 INFO L87 Difference]: Start difference. First operand 792 states and 1570 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:41,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:41,497 INFO L93 Difference]: Finished difference Result 2330 states and 4536 transitions. [2024-11-09 19:23:41,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:23:41,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2024-11-09 19:23:41,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:41,504 INFO L225 Difference]: With dead ends: 2330 [2024-11-09 19:23:41,504 INFO L226 Difference]: Without dead ends: 1540 [2024-11-09 19:23:41,506 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 [2024-11-09 19:23:41,507 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 845 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:41,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 225 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:23:41,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2024-11-09 19:23:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1537. [2024-11-09 19:23:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1536 states have (on average 1.869140625) internal successors, (2871), 1536 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2871 transitions. [2024-11-09 19:23:41,548 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2871 transitions. Word has length 104 [2024-11-09 19:23:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:41,548 INFO L471 AbstractCegarLoop]: Abstraction has 1537 states and 2871 transitions. [2024-11-09 19:23:41,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2871 transitions. [2024-11-09 19:23:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-09 19:23:41,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:41,551 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:41,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:23:41,552 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:41,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:41,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1872036233, now seen corresponding path program 1 times [2024-11-09 19:23:41,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:41,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310471959] [2024-11-09 19:23:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:41,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:41,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:41,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310471959] [2024-11-09 19:23:41,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310471959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:41,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:41,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:23:41,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747842310] [2024-11-09 19:23:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:41,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:41,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:41,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:41,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:41,784 INFO L87 Difference]: Start difference. First operand 1537 states and 2871 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:42,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:42,790 INFO L93 Difference]: Finished difference Result 3643 states and 6889 transitions. [2024-11-09 19:23:42,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:42,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2024-11-09 19:23:42,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:42,802 INFO L225 Difference]: With dead ends: 3643 [2024-11-09 19:23:42,802 INFO L226 Difference]: Without dead ends: 2293 [2024-11-09 19:23:42,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:42,809 INFO L432 NwaCegarLoop]: 436 mSDtfsCounter, 293 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:42,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 459 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:23:42,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2024-11-09 19:23:42,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2097. [2024-11-09 19:23:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.8530534351145038) internal successors, (3884), 2096 states have internal predecessors, (3884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 3884 transitions. [2024-11-09 19:23:42,898 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 3884 transitions. Word has length 147 [2024-11-09 19:23:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:42,900 INFO L471 AbstractCegarLoop]: Abstraction has 2097 states and 3884 transitions. [2024-11-09 19:23:42,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 3884 transitions. [2024-11-09 19:23:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-09 19:23:42,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:42,903 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, 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] [2024-11-09 19:23:42,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:23:42,903 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:42,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:42,904 INFO L85 PathProgramCache]: Analyzing trace with hash -244114485, now seen corresponding path program 1 times [2024-11-09 19:23:42,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:42,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287610611] [2024-11-09 19:23:42,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:42,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:43,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:43,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287610611] [2024-11-09 19:23:43,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287610611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:43,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:43,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:23:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050415094] [2024-11-09 19:23:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:43,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:43,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:43,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:43,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:43,098 INFO L87 Difference]: Start difference. First operand 2097 states and 3884 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:44,022 INFO L93 Difference]: Finished difference Result 4571 states and 8507 transitions. [2024-11-09 19:23:44,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:44,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2024-11-09 19:23:44,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:44,032 INFO L225 Difference]: With dead ends: 4571 [2024-11-09 19:23:44,032 INFO L226 Difference]: Without dead ends: 2476 [2024-11-09 19:23:44,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:44,038 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 289 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:44,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 471 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:23:44,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2024-11-09 19:23:44,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2467. [2024-11-09 19:23:44,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2466 states have (on average 1.8507704785077048) internal successors, (4564), 2466 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4564 transitions. [2024-11-09 19:23:44,105 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4564 transitions. Word has length 178 [2024-11-09 19:23:44,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:44,106 INFO L471 AbstractCegarLoop]: Abstraction has 2467 states and 4564 transitions. [2024-11-09 19:23:44,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4564 transitions. [2024-11-09 19:23:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-09 19:23:44,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:44,110 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:44,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:23:44,111 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:44,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash 585296934, now seen corresponding path program 1 times [2024-11-09 19:23:44,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:44,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326292573] [2024-11-09 19:23:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 19:23:44,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:44,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326292573] [2024-11-09 19:23:44,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326292573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:44,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:44,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:23:44,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193658821] [2024-11-09 19:23:44,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:44,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:44,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:44,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:44,348 INFO L87 Difference]: Start difference. First operand 2467 states and 4564 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:45,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:45,284 INFO L93 Difference]: Finished difference Result 5864 states and 11000 transitions. [2024-11-09 19:23:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:45,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 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 216 [2024-11-09 19:23:45,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:45,298 INFO L225 Difference]: With dead ends: 5864 [2024-11-09 19:23:45,298 INFO L226 Difference]: Without dead ends: 3399 [2024-11-09 19:23:45,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:45,302 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 158 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:45,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 161 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:23:45,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2024-11-09 19:23:45,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3399. [2024-11-09 19:23:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3398 states have (on average 1.8337257210123603) internal successors, (6231), 3398 states have internal predecessors, (6231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 6231 transitions. [2024-11-09 19:23:45,370 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 6231 transitions. Word has length 216 [2024-11-09 19:23:45,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:45,371 INFO L471 AbstractCegarLoop]: Abstraction has 3399 states and 6231 transitions. [2024-11-09 19:23:45,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 6231 transitions. [2024-11-09 19:23:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-09 19:23:45,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:45,375 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:23:45,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:23:45,376 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:45,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:45,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1946980903, now seen corresponding path program 1 times [2024-11-09 19:23:45,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:45,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532950707] [2024-11-09 19:23:45,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:45,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 19:23:45,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:45,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532950707] [2024-11-09 19:23:45,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532950707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:45,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:45,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:23:45,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609079047] [2024-11-09 19:23:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:45,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:45,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:45,622 INFO L87 Difference]: Start difference. First operand 3399 states and 6231 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:46,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:46,628 INFO L93 Difference]: Finished difference Result 7730 states and 14263 transitions. [2024-11-09 19:23:46,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:46,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 218 [2024-11-09 19:23:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:46,646 INFO L225 Difference]: With dead ends: 7730 [2024-11-09 19:23:46,646 INFO L226 Difference]: Without dead ends: 4333 [2024-11-09 19:23:46,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:46,651 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 284 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:46,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 505 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:23:46,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2024-11-09 19:23:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 4324. [2024-11-09 19:23:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4323 states have (on average 1.8207263474439046) internal successors, (7871), 4323 states have internal predecessors, (7871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 7871 transitions. [2024-11-09 19:23:46,732 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 7871 transitions. Word has length 218 [2024-11-09 19:23:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:46,733 INFO L471 AbstractCegarLoop]: Abstraction has 4324 states and 7871 transitions. [2024-11-09 19:23:46,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 7871 transitions. [2024-11-09 19:23:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-09 19:23:46,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:46,737 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:23:46,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:23:46,737 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:46,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:46,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1813832349, now seen corresponding path program 1 times [2024-11-09 19:23:46,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:46,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873835275] [2024-11-09 19:23:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:46,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:47,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:47,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873835275] [2024-11-09 19:23:47,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873835275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:47,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:47,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:23:47,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130111334] [2024-11-09 19:23:47,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:47,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:23:47,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:47,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:23:47,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:47,202 INFO L87 Difference]: Start difference. First operand 4324 states and 7871 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:48,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:48,647 INFO L93 Difference]: Finished difference Result 13312 states and 24507 transitions. [2024-11-09 19:23:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:23:48,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2024-11-09 19:23:48,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:48,681 INFO L225 Difference]: With dead ends: 13312 [2024-11-09 19:23:48,681 INFO L226 Difference]: Without dead ends: 8990 [2024-11-09 19:23:48,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:48,690 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 545 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:48,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 220 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:23:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8990 states. [2024-11-09 19:23:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8990 to 7679. [2024-11-09 19:23:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7679 states, 7678 states have (on average 1.81779109143006) internal successors, (13957), 7678 states have internal predecessors, (13957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7679 states to 7679 states and 13957 transitions. [2024-11-09 19:23:48,867 INFO L78 Accepts]: Start accepts. Automaton has 7679 states and 13957 transitions. Word has length 238 [2024-11-09 19:23:48,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:48,868 INFO L471 AbstractCegarLoop]: Abstraction has 7679 states and 13957 transitions. [2024-11-09 19:23:48,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:48,868 INFO L276 IsEmpty]: Start isEmpty. Operand 7679 states and 13957 transitions. [2024-11-09 19:23:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-09 19:23:48,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:48,873 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:23:48,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:23:48,873 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:48,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2065553280, now seen corresponding path program 1 times [2024-11-09 19:23:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:48,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118580691] [2024-11-09 19:23:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:49,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:49,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118580691] [2024-11-09 19:23:49,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118580691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:49,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:49,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:23:49,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534408639] [2024-11-09 19:23:49,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:49,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:23:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:49,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:23:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:49,139 INFO L87 Difference]: Start difference. First operand 7679 states and 13957 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:50,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:50,760 INFO L93 Difference]: Finished difference Result 22427 states and 41174 transitions. [2024-11-09 19:23:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:23:50,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 248 [2024-11-09 19:23:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:50,794 INFO L225 Difference]: With dead ends: 22427 [2024-11-09 19:23:50,795 INFO L226 Difference]: Without dead ends: 14750 [2024-11-09 19:23:50,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:50,807 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 516 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:50,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 103 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:23:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14750 states. [2024-11-09 19:23:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14750 to 14564. [2024-11-09 19:23:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14564 states, 14563 states have (on average 1.8258600563070795) internal successors, (26590), 14563 states have internal predecessors, (26590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:51,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14564 states to 14564 states and 26590 transitions. [2024-11-09 19:23:51,148 INFO L78 Accepts]: Start accepts. Automaton has 14564 states and 26590 transitions. Word has length 248 [2024-11-09 19:23:51,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:51,149 INFO L471 AbstractCegarLoop]: Abstraction has 14564 states and 26590 transitions. [2024-11-09 19:23:51,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:51,150 INFO L276 IsEmpty]: Start isEmpty. Operand 14564 states and 26590 transitions. [2024-11-09 19:23:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-09 19:23:51,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:51,155 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:23:51,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:23:51,156 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:51,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash -927142661, now seen corresponding path program 1 times [2024-11-09 19:23:51,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:51,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994330354] [2024-11-09 19:23:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:51,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:51,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:51,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994330354] [2024-11-09 19:23:51,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994330354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:51,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:51,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:23:51,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015260080] [2024-11-09 19:23:51,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:51,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:23:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:51,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:23:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:51,644 INFO L87 Difference]: Start difference. First operand 14564 states and 26590 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:53,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:53,270 INFO L93 Difference]: Finished difference Result 33950 states and 62691 transitions. [2024-11-09 19:23:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:23:53,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 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 248 [2024-11-09 19:23:53,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:53,316 INFO L225 Difference]: With dead ends: 33950 [2024-11-09 19:23:53,316 INFO L226 Difference]: Without dead ends: 19759 [2024-11-09 19:23:53,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:53,334 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 550 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:53,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 138 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:23:53,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19759 states. [2024-11-09 19:23:53,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19759 to 19745. [2024-11-09 19:23:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19745 states, 19744 states have (on average 1.8349371961102108) internal successors, (36229), 19744 states have internal predecessors, (36229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19745 states to 19745 states and 36229 transitions. [2024-11-09 19:23:53,732 INFO L78 Accepts]: Start accepts. Automaton has 19745 states and 36229 transitions. Word has length 248 [2024-11-09 19:23:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:53,733 INFO L471 AbstractCegarLoop]: Abstraction has 19745 states and 36229 transitions. [2024-11-09 19:23:53,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 19745 states and 36229 transitions. [2024-11-09 19:23:53,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-09 19:23:53,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:53,738 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:23:53,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:23:53,739 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:53,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash -935908283, now seen corresponding path program 1 times [2024-11-09 19:23:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:53,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981968041] [2024-11-09 19:23:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:53,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 19:23:54,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:54,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981968041] [2024-11-09 19:23:54,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981968041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:54,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:54,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:23:54,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60139927] [2024-11-09 19:23:54,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:54,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:54,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:54,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:54,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:54,051 INFO L87 Difference]: Start difference. First operand 19745 states and 36229 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:55,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:55,103 INFO L93 Difference]: Finished difference Result 39315 states and 72171 transitions. [2024-11-09 19:23:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:55,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2024-11-09 19:23:55,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:55,148 INFO L225 Difference]: With dead ends: 39315 [2024-11-09 19:23:55,148 INFO L226 Difference]: Without dead ends: 19757 [2024-11-09 19:23:55,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:55,175 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 288 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:55,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 502 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:23:55,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19757 states. [2024-11-09 19:23:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19757 to 19559. [2024-11-09 19:23:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19559 states, 19558 states have (on average 1.7996216382043153) internal successors, (35197), 19558 states have internal predecessors, (35197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19559 states to 19559 states and 35197 transitions. [2024-11-09 19:23:55,527 INFO L78 Accepts]: Start accepts. Automaton has 19559 states and 35197 transitions. Word has length 255 [2024-11-09 19:23:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:55,528 INFO L471 AbstractCegarLoop]: Abstraction has 19559 states and 35197 transitions. [2024-11-09 19:23:55,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 19559 states and 35197 transitions. [2024-11-09 19:23:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-09 19:23:55,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:55,534 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:55,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:23:55,535 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:55,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1375698715, now seen corresponding path program 1 times [2024-11-09 19:23:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:55,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000543471] [2024-11-09 19:23:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:56,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:56,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000543471] [2024-11-09 19:23:56,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000543471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:56,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:56,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:23:56,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104959447] [2024-11-09 19:23:56,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:56,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:23:56,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:56,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:23:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:56,086 INFO L87 Difference]: Start difference. First operand 19559 states and 35197 transitions. Second operand has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:57,453 INFO L93 Difference]: Finished difference Result 41516 states and 75074 transitions. [2024-11-09 19:23:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:23:57,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 [2024-11-09 19:23:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:57,493 INFO L225 Difference]: With dead ends: 41516 [2024-11-09 19:23:57,493 INFO L226 Difference]: Without dead ends: 21589 [2024-11-09 19:23:57,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:57,510 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 454 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:57,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 177 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:23:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21589 states. [2024-11-09 19:23:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21589 to 18423. [2024-11-09 19:23:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18423 states, 18422 states have (on average 1.7645206817935077) internal successors, (32506), 18422 states have internal predecessors, (32506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18423 states to 18423 states and 32506 transitions. [2024-11-09 19:23:57,764 INFO L78 Accepts]: Start accepts. Automaton has 18423 states and 32506 transitions. Word has length 269 [2024-11-09 19:23:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:57,765 INFO L471 AbstractCegarLoop]: Abstraction has 18423 states and 32506 transitions. [2024-11-09 19:23:57,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 18423 states and 32506 transitions. [2024-11-09 19:23:57,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-09 19:23:57,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:57,773 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:57,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:23:57,774 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:57,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:57,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2027604441, now seen corresponding path program 1 times [2024-11-09 19:23:57,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:57,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285927857] [2024-11-09 19:23:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-09 19:23:58,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:58,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285927857] [2024-11-09 19:23:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285927857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:58,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:58,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:23:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285741696] [2024-11-09 19:23:58,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:58,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:58,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:58,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:58,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:58,072 INFO L87 Difference]: Start difference. First operand 18423 states and 32506 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:59,044 INFO L93 Difference]: Finished difference Result 38504 states and 67931 transitions. [2024-11-09 19:23:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:59,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 304 [2024-11-09 19:23:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:59,089 INFO L225 Difference]: With dead ends: 38504 [2024-11-09 19:23:59,089 INFO L226 Difference]: Without dead ends: 22492 [2024-11-09 19:23:59,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:59,107 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 309 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:59,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 151 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:23:59,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22492 states. [2024-11-09 19:23:59,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22492 to 14344. [2024-11-09 19:23:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14344 states, 14343 states have (on average 1.771874782123684) internal successors, (25414), 14343 states have internal predecessors, (25414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:59,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14344 states to 14344 states and 25414 transitions. [2024-11-09 19:23:59,451 INFO L78 Accepts]: Start accepts. Automaton has 14344 states and 25414 transitions. Word has length 304 [2024-11-09 19:23:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:59,452 INFO L471 AbstractCegarLoop]: Abstraction has 14344 states and 25414 transitions. [2024-11-09 19:23:59,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 14344 states and 25414 transitions. [2024-11-09 19:23:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-09 19:23:59,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:59,464 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:23:59,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:23:59,465 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:59,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1325420356, now seen corresponding path program 1 times [2024-11-09 19:23:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:59,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941393318] [2024-11-09 19:23:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:59,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 57 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:24:00,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:00,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941393318] [2024-11-09 19:24:00,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941393318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:24:00,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675927549] [2024-11-09 19:24:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:00,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:24:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:24:00,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:24:00,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:24:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:00,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:24:00,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:24:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-09 19:24:00,498 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:24:00,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675927549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:00,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:24:00,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 19:24:00,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511005005] [2024-11-09 19:24:00,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:00,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:00,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:00,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:00,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:24:00,501 INFO L87 Difference]: Start difference. First operand 14344 states and 25414 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:01,290 INFO L93 Difference]: Finished difference Result 29426 states and 52141 transitions. [2024-11-09 19:24:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:24:01,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 316 [2024-11-09 19:24:01,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:01,312 INFO L225 Difference]: With dead ends: 29426 [2024-11-09 19:24:01,313 INFO L226 Difference]: Without dead ends: 15084 [2024-11-09 19:24:01,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:24:01,325 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 278 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:01,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 505 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:24:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15084 states. [2024-11-09 19:24:01,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15084 to 14714. [2024-11-09 19:24:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14714 states, 14713 states have (on average 1.769727451913274) internal successors, (26038), 14713 states have internal predecessors, (26038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14714 states to 14714 states and 26038 transitions. [2024-11-09 19:24:01,657 INFO L78 Accepts]: Start accepts. Automaton has 14714 states and 26038 transitions. Word has length 316 [2024-11-09 19:24:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:01,658 INFO L471 AbstractCegarLoop]: Abstraction has 14714 states and 26038 transitions. [2024-11-09 19:24:01,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 14714 states and 26038 transitions. [2024-11-09 19:24:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-09 19:24:01,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:01,669 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, 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, 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] [2024-11-09 19:24:01,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:24:01,869 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,SelfDestructingSolverStorable13 [2024-11-09 19:24:01,870 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:01,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:01,870 INFO L85 PathProgramCache]: Analyzing trace with hash 584510109, now seen corresponding path program 1 times [2024-11-09 19:24:01,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:01,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580108712] [2024-11-09 19:24:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:01,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 19:24:02,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:02,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580108712] [2024-11-09 19:24:02,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580108712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:02,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:02,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:24:02,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551850645] [2024-11-09 19:24:02,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:02,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:24:02,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:02,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:24:02,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:02,248 INFO L87 Difference]: Start difference. First operand 14714 states and 26038 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:03,727 INFO L93 Difference]: Finished difference Result 36488 states and 64610 transitions. [2024-11-09 19:24:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:24:03,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 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 324 [2024-11-09 19:24:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:03,751 INFO L225 Difference]: With dead ends: 36488 [2024-11-09 19:24:03,751 INFO L226 Difference]: Without dead ends: 21591 [2024-11-09 19:24:03,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:03,765 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 569 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:03,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 83 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:24:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21591 states. [2024-11-09 19:24:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21591 to 19358. [2024-11-09 19:24:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19358 states, 19357 states have (on average 1.7684558557627732) internal successors, (34232), 19357 states have internal predecessors, (34232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19358 states to 19358 states and 34232 transitions. [2024-11-09 19:24:04,092 INFO L78 Accepts]: Start accepts. Automaton has 19358 states and 34232 transitions. Word has length 324 [2024-11-09 19:24:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:04,093 INFO L471 AbstractCegarLoop]: Abstraction has 19358 states and 34232 transitions. [2024-11-09 19:24:04,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 19358 states and 34232 transitions. [2024-11-09 19:24:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-09 19:24:04,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:04,102 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:24:04,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:24:04,102 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:04,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1136104290, now seen corresponding path program 1 times [2024-11-09 19:24:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:04,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237374652] [2024-11-09 19:24:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 61 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:24:04,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:04,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237374652] [2024-11-09 19:24:04,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237374652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:24:04,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74973146] [2024-11-09 19:24:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:04,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:24:04,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:24:04,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:24:04,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:24:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:04,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:24:04,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:24:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 61 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:24:05,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:24:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 61 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:24:06,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74973146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:24:06,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:24:06,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-11-09 19:24:06,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056507695] [2024-11-09 19:24:06,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:24:06,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 19:24:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:06,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 19:24:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-09 19:24:06,756 INFO L87 Difference]: Start difference. First operand 19358 states and 34232 transitions. Second operand has 10 states, 10 states have (on average 70.0) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:10,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:10,492 INFO L93 Difference]: Finished difference Result 63380 states and 111942 transitions. [2024-11-09 19:24:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 19:24:10,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 70.0) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 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 334 [2024-11-09 19:24:10,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:10,558 INFO L225 Difference]: With dead ends: 63380 [2024-11-09 19:24:10,558 INFO L226 Difference]: Without dead ends: 43653 [2024-11-09 19:24:10,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-09 19:24:10,580 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 2674 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 4815 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 5428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 4815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:10,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2674 Valid, 211 Invalid, 5428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 4815 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:24:10,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43653 states. [2024-11-09 19:24:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43653 to 36052. [2024-11-09 19:24:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36052 states, 36051 states have (on average 1.7633075365454496) internal successors, (63569), 36051 states have internal predecessors, (63569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36052 states to 36052 states and 63569 transitions. [2024-11-09 19:24:11,264 INFO L78 Accepts]: Start accepts. Automaton has 36052 states and 63569 transitions. Word has length 334 [2024-11-09 19:24:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:11,265 INFO L471 AbstractCegarLoop]: Abstraction has 36052 states and 63569 transitions. [2024-11-09 19:24:11,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.0) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 36052 states and 63569 transitions. [2024-11-09 19:24:11,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-09 19:24:11,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:11,294 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:24:11,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:24:11,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 19:24:11,495 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:11,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:11,496 INFO L85 PathProgramCache]: Analyzing trace with hash 421749642, now seen corresponding path program 1 times [2024-11-09 19:24:11,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:11,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447636888] [2024-11-09 19:24:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:11,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-09 19:24:12,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:12,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447636888] [2024-11-09 19:24:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447636888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:12,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:12,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:24:12,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640507664] [2024-11-09 19:24:12,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:12,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:24:12,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:12,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:24:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:12,374 INFO L87 Difference]: Start difference. First operand 36052 states and 63569 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:13,468 INFO L93 Difference]: Finished difference Result 69880 states and 123184 transitions. [2024-11-09 19:24:13,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:24:13,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 407 [2024-11-09 19:24:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:13,510 INFO L225 Difference]: With dead ends: 69880 [2024-11-09 19:24:13,510 INFO L226 Difference]: Without dead ends: 36241 [2024-11-09 19:24:13,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:13,533 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 422 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:13,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 170 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:24:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36241 states. [2024-11-09 19:24:13,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36241 to 34572. [2024-11-09 19:24:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34572 states, 34571 states have (on average 1.758699488010182) internal successors, (60800), 34571 states have internal predecessors, (60800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34572 states to 34572 states and 60800 transitions. [2024-11-09 19:24:14,061 INFO L78 Accepts]: Start accepts. Automaton has 34572 states and 60800 transitions. Word has length 407 [2024-11-09 19:24:14,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:14,061 INFO L471 AbstractCegarLoop]: Abstraction has 34572 states and 60800 transitions. [2024-11-09 19:24:14,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:14,061 INFO L276 IsEmpty]: Start isEmpty. Operand 34572 states and 60800 transitions. [2024-11-09 19:24:14,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-09 19:24:14,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:14,079 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, 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, 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] [2024-11-09 19:24:14,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:24:14,080 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:14,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:14,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1956739572, now seen corresponding path program 1 times [2024-11-09 19:24:14,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:14,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58258680] [2024-11-09 19:24:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:14,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2024-11-09 19:24:14,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:14,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58258680] [2024-11-09 19:24:14,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58258680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:14,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:14,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:24:14,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122516814] [2024-11-09 19:24:14,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:14,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:14,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:14,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:14,308 INFO L87 Difference]: Start difference. First operand 34572 states and 60800 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:15,346 INFO L93 Difference]: Finished difference Result 68580 states and 120602 transitions. [2024-11-09 19:24:15,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:24:15,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 411 [2024-11-09 19:24:15,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:15,394 INFO L225 Difference]: With dead ends: 68580 [2024-11-09 19:24:15,395 INFO L226 Difference]: Without dead ends: 36420 [2024-11-09 19:24:15,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:15,413 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 288 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:15,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 480 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:24:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36420 states. [2024-11-09 19:24:15,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36420 to 20088. [2024-11-09 19:24:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20088 states, 20087 states have (on average 1.7564594016030268) internal successors, (35282), 20087 states have internal predecessors, (35282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20088 states to 20088 states and 35282 transitions. [2024-11-09 19:24:15,917 INFO L78 Accepts]: Start accepts. Automaton has 20088 states and 35282 transitions. Word has length 411 [2024-11-09 19:24:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:15,917 INFO L471 AbstractCegarLoop]: Abstraction has 20088 states and 35282 transitions. [2024-11-09 19:24:15,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 20088 states and 35282 transitions. [2024-11-09 19:24:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-09 19:24:15,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:15,931 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, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:24:15,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 19:24:15,931 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:15,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1576814817, now seen corresponding path program 1 times [2024-11-09 19:24:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:15,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447380050] [2024-11-09 19:24:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-09 19:24:16,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:16,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447380050] [2024-11-09 19:24:16,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447380050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:16,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:16,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:24:16,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049761391] [2024-11-09 19:24:16,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:16,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:24:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:24:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:16,358 INFO L87 Difference]: Start difference. First operand 20088 states and 35282 transitions. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:17,650 INFO L93 Difference]: Finished difference Result 41293 states and 72478 transitions. [2024-11-09 19:24:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:24:17,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 441 [2024-11-09 19:24:17,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:17,673 INFO L225 Difference]: With dead ends: 41293 [2024-11-09 19:24:17,674 INFO L226 Difference]: Without dead ends: 21207 [2024-11-09 19:24:17,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:17,686 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 424 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:17,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 89 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:24:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21207 states. [2024-11-09 19:24:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21207 to 19903. [2024-11-09 19:24:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19903 states, 19902 states have (on average 1.75515023615717) internal successors, (34931), 19902 states have internal predecessors, (34931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19903 states to 19903 states and 34931 transitions. [2024-11-09 19:24:18,039 INFO L78 Accepts]: Start accepts. Automaton has 19903 states and 34931 transitions. Word has length 441 [2024-11-09 19:24:18,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:18,039 INFO L471 AbstractCegarLoop]: Abstraction has 19903 states and 34931 transitions. [2024-11-09 19:24:18,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:18,040 INFO L276 IsEmpty]: Start isEmpty. Operand 19903 states and 34931 transitions. [2024-11-09 19:24:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-11-09 19:24:18,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:18,050 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:24:18,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 19:24:18,050 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:18,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1058190562, now seen corresponding path program 1 times [2024-11-09 19:24:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:18,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59960532] [2024-11-09 19:24:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:18,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2024-11-09 19:24:18,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:18,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59960532] [2024-11-09 19:24:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59960532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:18,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:18,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:24:18,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706367787] [2024-11-09 19:24:18,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:18,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:18,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:18,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:18,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:18,237 INFO L87 Difference]: Start difference. First operand 19903 states and 34931 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:19,134 INFO L93 Difference]: Finished difference Result 42024 states and 73698 transitions. [2024-11-09 19:24:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:24:19,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 456 [2024-11-09 19:24:19,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:19,153 INFO L225 Difference]: With dead ends: 42024 [2024-11-09 19:24:19,153 INFO L226 Difference]: Without dead ends: 20083 [2024-11-09 19:24:19,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:19,163 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 308 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:19,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 439 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:24:19,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20083 states. [2024-11-09 19:24:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20083 to 19157. [2024-11-09 19:24:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19157 states, 19156 states have (on average 1.731572353309668) internal successors, (33170), 19156 states have internal predecessors, (33170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19157 states to 19157 states and 33170 transitions. [2024-11-09 19:24:19,327 INFO L78 Accepts]: Start accepts. Automaton has 19157 states and 33170 transitions. Word has length 456 [2024-11-09 19:24:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:19,327 INFO L471 AbstractCegarLoop]: Abstraction has 19157 states and 33170 transitions. [2024-11-09 19:24:19,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 19157 states and 33170 transitions. [2024-11-09 19:24:19,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-09 19:24:19,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:19,337 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:24:19,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 19:24:19,337 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:19,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:19,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1559821877, now seen corresponding path program 1 times [2024-11-09 19:24:19,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:19,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219009453] [2024-11-09 19:24:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:19,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-09 19:24:20,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:20,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219009453] [2024-11-09 19:24:20,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219009453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:20,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:20,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:24:20,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980752416] [2024-11-09 19:24:20,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:20,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:24:20,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:20,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:24:20,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:20,430 INFO L87 Difference]: Start difference. First operand 19157 states and 33170 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:21,604 INFO L93 Difference]: Finished difference Result 40179 states and 69512 transitions. [2024-11-09 19:24:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:24:21,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 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 503 [2024-11-09 19:24:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:21,633 INFO L225 Difference]: With dead ends: 40179 [2024-11-09 19:24:21,633 INFO L226 Difference]: Without dead ends: 20469 [2024-11-09 19:24:21,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:21,648 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 546 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:21,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 458 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:24:21,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20469 states. [2024-11-09 19:24:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20469 to 15815. [2024-11-09 19:24:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15815 states, 15814 states have (on average 1.7306184393575312) internal successors, (27368), 15814 states have internal predecessors, (27368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15815 states to 15815 states and 27368 transitions. [2024-11-09 19:24:21,935 INFO L78 Accepts]: Start accepts. Automaton has 15815 states and 27368 transitions. Word has length 503 [2024-11-09 19:24:21,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:21,936 INFO L471 AbstractCegarLoop]: Abstraction has 15815 states and 27368 transitions. [2024-11-09 19:24:21,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:21,936 INFO L276 IsEmpty]: Start isEmpty. Operand 15815 states and 27368 transitions. [2024-11-09 19:24:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2024-11-09 19:24:21,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:21,946 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:24:21,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 19:24:21,946 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:21,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:21,947 INFO L85 PathProgramCache]: Analyzing trace with hash 126630027, now seen corresponding path program 1 times [2024-11-09 19:24:21,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:21,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068401736] [2024-11-09 19:24:21,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:21,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 19:24:22,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:22,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068401736] [2024-11-09 19:24:22,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068401736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:22,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:22,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:24:22,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191842222] [2024-11-09 19:24:22,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:22,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:24:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:24:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:22,577 INFO L87 Difference]: Start difference. First operand 15815 states and 27368 transitions. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:23,760 INFO L93 Difference]: Finished difference Result 35338 states and 61194 transitions. [2024-11-09 19:24:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:24:23,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 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 523 [2024-11-09 19:24:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:23,782 INFO L225 Difference]: With dead ends: 35338 [2024-11-09 19:24:23,782 INFO L226 Difference]: Without dead ends: 19709 [2024-11-09 19:24:23,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:23,793 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 361 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:23,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 105 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:24:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19709 states. [2024-11-09 19:24:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19709 to 18596. [2024-11-09 19:24:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18596 states, 18595 states have (on average 1.7286905082011292) internal successors, (32145), 18595 states have internal predecessors, (32145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18596 states to 18596 states and 32145 transitions. [2024-11-09 19:24:23,973 INFO L78 Accepts]: Start accepts. Automaton has 18596 states and 32145 transitions. Word has length 523 [2024-11-09 19:24:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:23,973 INFO L471 AbstractCegarLoop]: Abstraction has 18596 states and 32145 transitions. [2024-11-09 19:24:23,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 18596 states and 32145 transitions. [2024-11-09 19:24:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2024-11-09 19:24:23,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:23,983 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:24:23,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 19:24:23,984 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:23,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash -308695920, now seen corresponding path program 1 times [2024-11-09 19:24:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:23,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939070626] [2024-11-09 19:24:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 31 proven. 400 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-09 19:24:24,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939070626] [2024-11-09 19:24:24,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939070626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:24:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849781107] [2024-11-09 19:24:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:24,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:24:24,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:24:24,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:24:24,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:24:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:24,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 19:24:24,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:24:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 31 proven. 400 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-09 19:24:25,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:24:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 31 proven. 400 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-09 19:24:31,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849781107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:24:31,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:24:31,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 11 [2024-11-09 19:24:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10296900] [2024-11-09 19:24:31,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:24:31,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 19:24:31,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:31,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 19:24:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-09 19:24:31,202 INFO L87 Difference]: Start difference. First operand 18596 states and 32145 transitions. Second operand has 12 states, 12 states have (on average 97.66666666666667) internal successors, (1172), 11 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:35,901 INFO L93 Difference]: Finished difference Result 62233 states and 107631 transitions. [2024-11-09 19:24:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 19:24:35,902 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 97.66666666666667) internal successors, (1172), 11 states have internal predecessors, (1172), 0 states have call successors, (0), 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 561 [2024-11-09 19:24:35,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:35,950 INFO L225 Difference]: With dead ends: 62233 [2024-11-09 19:24:35,950 INFO L226 Difference]: Without dead ends: 43639 [2024-11-09 19:24:35,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 1114 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2024-11-09 19:24:35,968 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 6049 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5174 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6049 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 6270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 5174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:35,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6049 Valid, 206 Invalid, 6270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1096 Valid, 5174 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 19:24:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43639 states. [2024-11-09 19:24:36,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43639 to 25640. [2024-11-09 19:24:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25640 states, 25639 states have (on average 1.7306057178517102) internal successors, (44371), 25639 states have internal predecessors, (44371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25640 states to 25640 states and 44371 transitions. [2024-11-09 19:24:36,394 INFO L78 Accepts]: Start accepts. Automaton has 25640 states and 44371 transitions. Word has length 561 [2024-11-09 19:24:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:36,395 INFO L471 AbstractCegarLoop]: Abstraction has 25640 states and 44371 transitions. [2024-11-09 19:24:36,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 97.66666666666667) internal successors, (1172), 11 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 25640 states and 44371 transitions. [2024-11-09 19:24:36,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2024-11-09 19:24:36,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:36,418 INFO L215 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:24:36,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:24:36,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:24:36,619 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:36,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:36,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1636001248, now seen corresponding path program 1 times [2024-11-09 19:24:36,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:36,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638435103] [2024-11-09 19:24:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:36,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1691 backedges. 1139 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2024-11-09 19:24:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638435103] [2024-11-09 19:24:36,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638435103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:36,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:36,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:24:36,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150924451] [2024-11-09 19:24:36,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:36,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:36,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:36,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:36,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:36,883 INFO L87 Difference]: Start difference. First operand 25640 states and 44371 transitions. Second operand has 3 states, 3 states have (on average 157.66666666666666) 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) [2024-11-09 19:24:37,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:37,642 INFO L93 Difference]: Finished difference Result 52570 states and 90943 transitions. [2024-11-09 19:24:37,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:24:37,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.66666666666666) 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 786 [2024-11-09 19:24:37,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:37,682 INFO L225 Difference]: With dead ends: 52570 [2024-11-09 19:24:37,682 INFO L226 Difference]: Without dead ends: 27117 [2024-11-09 19:24:37,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:37,696 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 191 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:37,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 148 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:24:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27117 states. [2024-11-09 19:24:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27117 to 24892. [2024-11-09 19:24:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24892 states, 24891 states have (on average 1.727491864529348) internal successors, (42999), 24891 states have internal predecessors, (42999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:38,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24892 states to 24892 states and 42999 transitions. [2024-11-09 19:24:38,136 INFO L78 Accepts]: Start accepts. Automaton has 24892 states and 42999 transitions. Word has length 786 [2024-11-09 19:24:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:38,136 INFO L471 AbstractCegarLoop]: Abstraction has 24892 states and 42999 transitions. [2024-11-09 19:24:38,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) 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) [2024-11-09 19:24:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 24892 states and 42999 transitions. [2024-11-09 19:24:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2024-11-09 19:24:38,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:38,160 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-09 19:24:38,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 19:24:38,160 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:38,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1347855473, now seen corresponding path program 1 times [2024-11-09 19:24:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:38,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702493767] [2024-11-09 19:24:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2176 backedges. 1489 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2024-11-09 19:24:38,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:38,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702493767] [2024-11-09 19:24:38,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702493767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:38,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:38,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:24:38,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426592905] [2024-11-09 19:24:38,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:38,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:38,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:38,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:38,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:38,833 INFO L87 Difference]: Start difference. First operand 24892 states and 42999 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:39,572 INFO L93 Difference]: Finished difference Result 49992 states and 86346 transitions. [2024-11-09 19:24:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:24:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 803 [2024-11-09 19:24:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:39,598 INFO L225 Difference]: With dead ends: 49992 [2024-11-09 19:24:39,598 INFO L226 Difference]: Without dead ends: 25472 [2024-11-09 19:24:39,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:39,614 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 224 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:39,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 146 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:24:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25472 states. [2024-11-09 19:24:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25472 to 24892. [2024-11-09 19:24:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24892 states, 24891 states have (on average 1.7259652083082238) internal successors, (42961), 24891 states have internal predecessors, (42961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24892 states to 24892 states and 42961 transitions. [2024-11-09 19:24:40,018 INFO L78 Accepts]: Start accepts. Automaton has 24892 states and 42961 transitions. Word has length 803 [2024-11-09 19:24:40,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:40,018 INFO L471 AbstractCegarLoop]: Abstraction has 24892 states and 42961 transitions. [2024-11-09 19:24:40,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 24892 states and 42961 transitions. [2024-11-09 19:24:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2024-11-09 19:24:40,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:40,037 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-09 19:24:40,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 19:24:40,037 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:40,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:40,038 INFO L85 PathProgramCache]: Analyzing trace with hash -300494848, now seen corresponding path program 1 times [2024-11-09 19:24:40,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:40,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979547318] [2024-11-09 19:24:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:40,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1300 proven. 0 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2024-11-09 19:24:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979547318] [2024-11-09 19:24:41,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979547318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:41,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:41,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:24:41,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329697106] [2024-11-09 19:24:41,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:41,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:24:41,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:41,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:24:41,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:41,270 INFO L87 Difference]: Start difference. First operand 24892 states and 42961 transitions. Second operand has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:42,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:42,582 INFO L93 Difference]: Finished difference Result 52017 states and 89704 transitions. [2024-11-09 19:24:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:24:42,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 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 804 [2024-11-09 19:24:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:42,611 INFO L225 Difference]: With dead ends: 52017 [2024-11-09 19:24:42,611 INFO L226 Difference]: Without dead ends: 27497 [2024-11-09 19:24:42,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:42,627 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 430 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:42,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 66 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:24:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27497 states. [2024-11-09 19:24:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27497 to 23962. [2024-11-09 19:24:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23962 states, 23961 states have (on average 1.7249697424982262) internal successors, (41332), 23961 states have internal predecessors, (41332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:43,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23962 states to 23962 states and 41332 transitions. [2024-11-09 19:24:43,081 INFO L78 Accepts]: Start accepts. Automaton has 23962 states and 41332 transitions. Word has length 804 [2024-11-09 19:24:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:43,082 INFO L471 AbstractCegarLoop]: Abstraction has 23962 states and 41332 transitions. [2024-11-09 19:24:43,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 23962 states and 41332 transitions. [2024-11-09 19:24:43,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2024-11-09 19:24:43,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:43,110 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:24:43,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 19:24:43,111 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:43,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash 525012629, now seen corresponding path program 1 times [2024-11-09 19:24:43,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:43,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015741398] [2024-11-09 19:24:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:43,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2342 backedges. 1365 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2024-11-09 19:24:43,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:43,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015741398] [2024-11-09 19:24:43,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015741398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:43,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:43,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:24:43,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470555604] [2024-11-09 19:24:43,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:43,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:43,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:43,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:43,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:43,673 INFO L87 Difference]: Start difference. First operand 23962 states and 41332 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)