./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 7e5038cf4746b0d33da8db40d97242789791fda4fe0e15050faace48f6985f4f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 18:07:05,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 18:07:05,967 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-18 18:07:05,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 18:07:05,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 18:07:06,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 18:07:06,007 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 18:07:06,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 18:07:06,008 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 18:07:06,008 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 18:07:06,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 18:07:06,009 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 18:07:06,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 18:07:06,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 18:07:06,010 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 18:07:06,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 18:07:06,010 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 18:07:06,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 18:07:06,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 18:07:06,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 18:07:06,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 18:07:06,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 18:07:06,012 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 18:07:06,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 18:07:06,013 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 18:07:06,013 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 18:07:06,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 18:07:06,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 18:07:06,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 18:07:06,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:07:06,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 18:07:06,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 18:07:06,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 18:07:06,015 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 18:07:06,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 18:07:06,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 18:07:06,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 18:07:06,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 18:07:06,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 18:07:06,016 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e5038cf4746b0d33da8db40d97242789791fda4fe0e15050faace48f6985f4f [2024-11-18 18:07:06,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 18:07:06,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 18:07:06,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 18:07:06,286 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 18:07:06,287 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 18:07:06,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2024-11-18 18:07:07,678 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 18:07:07,864 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 18:07:07,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2024-11-18 18:07:07,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d551d85ec/1242f0a6449b41fb9ad0ac95587749b4/FLAG7b1f4bdda [2024-11-18 18:07:07,896 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d551d85ec/1242f0a6449b41fb9ad0ac95587749b4 [2024-11-18 18:07:07,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 18:07:07,902 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 18:07:07,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 18:07:07,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 18:07:07,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 18:07:07,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:07:07" (1/1) ... [2024-11-18 18:07:07,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77db03dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:07, skipping insertion in model container [2024-11-18 18:07:07,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:07:07" (1/1) ... [2024-11-18 18:07:07,945 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 18:07:08,099 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/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1249,1262] [2024-11-18 18:07:08,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:07:08,244 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 18:07:08,254 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/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1249,1262] [2024-11-18 18:07:08,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:07:08,344 INFO L204 MainTranslator]: Completed translation [2024-11-18 18:07:08,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08 WrapperNode [2024-11-18 18:07:08,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 18:07:08,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 18:07:08,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 18:07:08,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 18:07:08,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,474 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1013 [2024-11-18 18:07:08,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 18:07:08,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 18:07:08,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 18:07:08,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 18:07:08,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,607 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 18:07:08,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,728 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 18:07:08,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 18:07:08,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 18:07:08,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 18:07:08,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (1/1) ... [2024-11-18 18:07:08,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:07:08,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:07:08,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 18:07:08,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 18:07:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 18:07:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 18:07:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 18:07:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 18:07:08,928 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 18:07:08,929 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 18:07:09,878 INFO L? ?]: Removed 647 outVars from TransFormulas that were not future-live. [2024-11-18 18:07:09,878 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 18:07:09,897 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 18:07:09,897 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 18:07:09,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:07:09 BoogieIcfgContainer [2024-11-18 18:07:09,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 18:07:09,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 18:07:09,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 18:07:09,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 18:07:09,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:07:07" (1/3) ... [2024-11-18 18:07:09,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fd15ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:07:09, skipping insertion in model container [2024-11-18 18:07:09,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:07:08" (2/3) ... [2024-11-18 18:07:09,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fd15ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:07:09, skipping insertion in model container [2024-11-18 18:07:09,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:07:09" (3/3) ... [2024-11-18 18:07:09,907 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_loop_v.c [2024-11-18 18:07:09,920 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 18:07:09,921 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 18:07:09,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 18:07:09,992 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;@222a211d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 18:07:09,993 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 18:07:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 296 states have (on average 1.4966216216216217) internal successors, (443), 297 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:10,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 18:07:10,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:10,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:10,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:10,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:10,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1579872556, now seen corresponding path program 1 times [2024-11-18 18:07:10,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:10,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534418704] [2024-11-18 18:07:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:10,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:10,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:10,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534418704] [2024-11-18 18:07:10,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534418704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:10,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:10,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:07:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879751977] [2024-11-18 18:07:10,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:10,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:07:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:10,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:07:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:07:10,482 INFO L87 Difference]: Start difference. First operand has 298 states, 296 states have (on average 1.4966216216216217) internal successors, (443), 297 states have internal predecessors, (443), 0 states have call successors, (0), 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 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:10,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:10,552 INFO L93 Difference]: Finished difference Result 557 states and 831 transitions. [2024-11-18 18:07:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:07:10,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-18 18:07:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:10,564 INFO L225 Difference]: With dead ends: 557 [2024-11-18 18:07:10,564 INFO L226 Difference]: Without dead ends: 297 [2024-11-18 18:07:10,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:07:10,570 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 0 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:10,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1305 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:07:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-18 18:07:10,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-11-18 18:07:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.489864864864865) internal successors, (441), 296 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 441 transitions. [2024-11-18 18:07:10,617 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 441 transitions. Word has length 27 [2024-11-18 18:07:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:10,617 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 441 transitions. [2024-11-18 18:07:10,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 441 transitions. [2024-11-18 18:07:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 18:07:10,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:10,619 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] [2024-11-18 18:07:10,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 18:07:10,619 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:10,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1729713684, now seen corresponding path program 1 times [2024-11-18 18:07:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:10,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166733208] [2024-11-18 18:07:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:10,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:10,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166733208] [2024-11-18 18:07:10,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166733208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:10,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:10,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:07:10,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737484577] [2024-11-18 18:07:10,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:10,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:07:10,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:10,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:07:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:07:10,776 INFO L87 Difference]: Start difference. First operand 297 states and 441 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:10,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:10,816 INFO L93 Difference]: Finished difference Result 558 states and 829 transitions. [2024-11-18 18:07:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:07:10,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-11-18 18:07:10,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:10,819 INFO L225 Difference]: With dead ends: 558 [2024-11-18 18:07:10,820 INFO L226 Difference]: Without dead ends: 299 [2024-11-18 18:07:10,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:07:10,822 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 0 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:10,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1301 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:07:10,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-18 18:07:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2024-11-18 18:07:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4865771812080537) internal successors, (443), 298 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 443 transitions. [2024-11-18 18:07:10,842 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 443 transitions. Word has length 28 [2024-11-18 18:07:10,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:10,842 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 443 transitions. [2024-11-18 18:07:10,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:10,843 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 443 transitions. [2024-11-18 18:07:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 18:07:10,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:10,843 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] [2024-11-18 18:07:10,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 18:07:10,843 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:10,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:10,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1115484845, now seen corresponding path program 1 times [2024-11-18 18:07:10,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:10,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147605805] [2024-11-18 18:07:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:10,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:11,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:11,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147605805] [2024-11-18 18:07:11,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147605805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:11,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:11,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:11,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314606827] [2024-11-18 18:07:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:11,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:11,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:11,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:11,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:11,015 INFO L87 Difference]: Start difference. First operand 299 states and 443 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:11,086 INFO L93 Difference]: Finished difference Result 795 states and 1180 transitions. [2024-11-18 18:07:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:11,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-18 18:07:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:11,089 INFO L225 Difference]: With dead ends: 795 [2024-11-18 18:07:11,089 INFO L226 Difference]: Without dead ends: 534 [2024-11-18 18:07:11,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:11,090 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 1117 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:11,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1275 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:07:11,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-18 18:07:11,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 301. [2024-11-18 18:07:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.4833333333333334) internal successors, (445), 300 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 445 transitions. [2024-11-18 18:07:11,113 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 445 transitions. Word has length 29 [2024-11-18 18:07:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:11,113 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 445 transitions. [2024-11-18 18:07:11,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 445 transitions. [2024-11-18 18:07:11,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-18 18:07:11,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:11,118 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:11,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 18:07:11,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:11,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:11,118 INFO L85 PathProgramCache]: Analyzing trace with hash -909755532, now seen corresponding path program 1 times [2024-11-18 18:07:11,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:11,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004273406] [2024-11-18 18:07:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:11,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:12,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:12,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004273406] [2024-11-18 18:07:12,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004273406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:12,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:12,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:07:12,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423697938] [2024-11-18 18:07:12,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:12,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:07:12,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:12,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:07:12,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:07:12,154 INFO L87 Difference]: Start difference. First operand 301 states and 445 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:12,253 INFO L93 Difference]: Finished difference Result 778 states and 1154 transitions. [2024-11-18 18:07:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 18:07:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2024-11-18 18:07:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:12,256 INFO L225 Difference]: With dead ends: 778 [2024-11-18 18:07:12,256 INFO L226 Difference]: Without dead ends: 517 [2024-11-18 18:07:12,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:07:12,260 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 1048 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:12,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1578 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-18 18:07:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 326. [2024-11-18 18:07:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.4738461538461538) internal successors, (479), 325 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 479 transitions. [2024-11-18 18:07:12,277 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 479 transitions. Word has length 158 [2024-11-18 18:07:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:12,277 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 479 transitions. [2024-11-18 18:07:12,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 479 transitions. [2024-11-18 18:07:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 18:07:12,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:12,285 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:12,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 18:07:12,285 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:12,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash -677895360, now seen corresponding path program 1 times [2024-11-18 18:07:12,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:12,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065776903] [2024-11-18 18:07:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:12,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:13,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:13,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065776903] [2024-11-18 18:07:13,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065776903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:13,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:13,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:13,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154041446] [2024-11-18 18:07:13,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:13,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:13,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:13,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:13,144 INFO L87 Difference]: Start difference. First operand 326 states and 479 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:13,252 INFO L93 Difference]: Finished difference Result 778 states and 1152 transitions. [2024-11-18 18:07:13,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:13,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2024-11-18 18:07:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:13,254 INFO L225 Difference]: With dead ends: 778 [2024-11-18 18:07:13,255 INFO L226 Difference]: Without dead ends: 517 [2024-11-18 18:07:13,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:13,256 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 1026 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:13,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1263 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:13,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-18 18:07:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 355. [2024-11-18 18:07:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.4717514124293785) internal successors, (521), 354 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 521 transitions. [2024-11-18 18:07:13,266 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 521 transitions. Word has length 159 [2024-11-18 18:07:13,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:13,266 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 521 transitions. [2024-11-18 18:07:13,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 521 transitions. [2024-11-18 18:07:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 18:07:13,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:13,271 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:07:13,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 18:07:13,272 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:13,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1680367235, now seen corresponding path program 1 times [2024-11-18 18:07:13,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:13,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041337784] [2024-11-18 18:07:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:13,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:14,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041337784] [2024-11-18 18:07:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041337784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:14,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:14,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:14,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907852479] [2024-11-18 18:07:14,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:14,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:14,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:14,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:14,228 INFO L87 Difference]: Start difference. First operand 355 states and 521 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:14,311 INFO L93 Difference]: Finished difference Result 778 states and 1150 transitions. [2024-11-18 18:07:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:14,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2024-11-18 18:07:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:14,315 INFO L225 Difference]: With dead ends: 778 [2024-11-18 18:07:14,316 INFO L226 Difference]: Without dead ends: 517 [2024-11-18 18:07:14,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:14,317 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 996 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:14,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1262 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-18 18:07:14,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 406. [2024-11-18 18:07:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.471604938271605) internal successors, (596), 405 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 596 transitions. [2024-11-18 18:07:14,327 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 596 transitions. Word has length 161 [2024-11-18 18:07:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:14,327 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 596 transitions. [2024-11-18 18:07:14,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:14,328 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 596 transitions. [2024-11-18 18:07:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-18 18:07:14,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:14,329 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:14,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 18:07:14,329 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:14,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:14,329 INFO L85 PathProgramCache]: Analyzing trace with hash -433125898, now seen corresponding path program 1 times [2024-11-18 18:07:14,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:14,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942618828] [2024-11-18 18:07:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:14,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:15,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:15,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942618828] [2024-11-18 18:07:15,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942618828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:15,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:15,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:15,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720226010] [2024-11-18 18:07:15,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:15,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:15,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:15,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:15,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:15,185 INFO L87 Difference]: Start difference. First operand 406 states and 596 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:15,271 INFO L93 Difference]: Finished difference Result 778 states and 1149 transitions. [2024-11-18 18:07:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:15,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2024-11-18 18:07:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:15,274 INFO L225 Difference]: With dead ends: 778 [2024-11-18 18:07:15,274 INFO L226 Difference]: Without dead ends: 517 [2024-11-18 18:07:15,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:15,275 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 951 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:15,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1262 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-18 18:07:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 490. [2024-11-18 18:07:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.474437627811861) internal successors, (721), 489 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:15,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 721 transitions. [2024-11-18 18:07:15,285 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 721 transitions. Word has length 162 [2024-11-18 18:07:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:15,285 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 721 transitions. [2024-11-18 18:07:15,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 721 transitions. [2024-11-18 18:07:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 18:07:15,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:15,287 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:15,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 18:07:15,288 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:15,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash -623708650, now seen corresponding path program 1 times [2024-11-18 18:07:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699567262] [2024-11-18 18:07:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:16,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:16,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699567262] [2024-11-18 18:07:16,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699567262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:16,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:16,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:16,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924723115] [2024-11-18 18:07:16,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:16,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:16,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:16,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:16,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:16,022 INFO L87 Difference]: Start difference. First operand 490 states and 721 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:16,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:16,113 INFO L93 Difference]: Finished difference Result 804 states and 1186 transitions. [2024-11-18 18:07:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:16,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2024-11-18 18:07:16,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:16,115 INFO L225 Difference]: With dead ends: 804 [2024-11-18 18:07:16,115 INFO L226 Difference]: Without dead ends: 517 [2024-11-18 18:07:16,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:16,116 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 963 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:16,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1262 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:16,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-18 18:07:16,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 490. [2024-11-18 18:07:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.4723926380368098) internal successors, (720), 489 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 720 transitions. [2024-11-18 18:07:16,124 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 720 transitions. Word has length 163 [2024-11-18 18:07:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:16,124 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 720 transitions. [2024-11-18 18:07:16,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:16,125 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 720 transitions. [2024-11-18 18:07:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-18 18:07:16,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:16,126 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:07:16,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 18:07:16,126 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:16,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:16,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1521687385, now seen corresponding path program 1 times [2024-11-18 18:07:16,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:16,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907895743] [2024-11-18 18:07:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:16,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:16,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:16,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907895743] [2024-11-18 18:07:16,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907895743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:16,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:16,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:16,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779941981] [2024-11-18 18:07:16,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:16,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:16,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:16,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:16,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:16,868 INFO L87 Difference]: Start difference. First operand 490 states and 720 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:16,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:16,952 INFO L93 Difference]: Finished difference Result 832 states and 1226 transitions. [2024-11-18 18:07:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:16,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2024-11-18 18:07:16,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:16,954 INFO L225 Difference]: With dead ends: 832 [2024-11-18 18:07:16,954 INFO L226 Difference]: Without dead ends: 517 [2024-11-18 18:07:16,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:16,955 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 975 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:16,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1262 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:07:16,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-18 18:07:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 490. [2024-11-18 18:07:16,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.4703476482617588) internal successors, (719), 489 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 719 transitions. [2024-11-18 18:07:16,967 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 719 transitions. Word has length 164 [2024-11-18 18:07:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:16,967 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 719 transitions. [2024-11-18 18:07:16,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 719 transitions. [2024-11-18 18:07:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 18:07:16,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:16,969 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:16,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 18:07:16,969 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:16,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:16,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1168370331, now seen corresponding path program 1 times [2024-11-18 18:07:16,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447755942] [2024-11-18 18:07:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:16,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:17,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:17,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447755942] [2024-11-18 18:07:17,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447755942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:17,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:17,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:17,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634466178] [2024-11-18 18:07:17,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:17,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:17,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:17,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:17,846 INFO L87 Difference]: Start difference. First operand 490 states and 719 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:17,949 INFO L93 Difference]: Finished difference Result 786 states and 1158 transitions. [2024-11-18 18:07:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:07:17,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2024-11-18 18:07:17,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:17,951 INFO L225 Difference]: With dead ends: 786 [2024-11-18 18:07:17,951 INFO L226 Difference]: Without dead ends: 525 [2024-11-18 18:07:17,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:07:17,952 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 965 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:17,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 1873 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-18 18:07:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 493. [2024-11-18 18:07:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.4695121951219512) internal successors, (723), 492 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 723 transitions. [2024-11-18 18:07:17,963 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 723 transitions. Word has length 165 [2024-11-18 18:07:17,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:17,963 INFO L471 AbstractCegarLoop]: Abstraction has 493 states and 723 transitions. [2024-11-18 18:07:17,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 723 transitions. [2024-11-18 18:07:17,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-18 18:07:17,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:17,965 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:17,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 18:07:17,965 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:17,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash -583480850, now seen corresponding path program 1 times [2024-11-18 18:07:17,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:17,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595777307] [2024-11-18 18:07:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:17,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:18,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:18,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595777307] [2024-11-18 18:07:18,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595777307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:18,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:18,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:18,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286291586] [2024-11-18 18:07:18,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:18,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:18,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:18,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:18,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:18,799 INFO L87 Difference]: Start difference. First operand 493 states and 723 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 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) [2024-11-18 18:07:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:18,895 INFO L93 Difference]: Finished difference Result 841 states and 1237 transitions. [2024-11-18 18:07:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:07:18,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 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 166 [2024-11-18 18:07:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:18,897 INFO L225 Difference]: With dead ends: 841 [2024-11-18 18:07:18,897 INFO L226 Difference]: Without dead ends: 527 [2024-11-18 18:07:18,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:07:18,898 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 995 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:18,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1873 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:18,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-18 18:07:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 495. [2024-11-18 18:07:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.4676113360323886) internal successors, (725), 494 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 725 transitions. [2024-11-18 18:07:18,907 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 725 transitions. Word has length 166 [2024-11-18 18:07:18,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:18,907 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 725 transitions. [2024-11-18 18:07:18,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 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) [2024-11-18 18:07:18,907 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 725 transitions. [2024-11-18 18:07:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 18:07:18,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:18,909 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:18,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 18:07:18,909 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:18,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:18,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1960370405, now seen corresponding path program 1 times [2024-11-18 18:07:18,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:18,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261244229] [2024-11-18 18:07:18,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:18,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:19,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:19,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261244229] [2024-11-18 18:07:19,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261244229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:19,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:19,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100904186] [2024-11-18 18:07:19,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:19,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:19,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:19,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:19,651 INFO L87 Difference]: Start difference. First operand 495 states and 725 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:19,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:19,749 INFO L93 Difference]: Finished difference Result 815 states and 1198 transitions. [2024-11-18 18:07:19,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:07:19,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-11-18 18:07:19,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:19,751 INFO L225 Difference]: With dead ends: 815 [2024-11-18 18:07:19,751 INFO L226 Difference]: Without dead ends: 529 [2024-11-18 18:07:19,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:07:19,752 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 979 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:19,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1873 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:19,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-18 18:07:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 497. [2024-11-18 18:07:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.465725806451613) internal successors, (727), 496 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 727 transitions. [2024-11-18 18:07:19,761 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 727 transitions. Word has length 167 [2024-11-18 18:07:19,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:19,761 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 727 transitions. [2024-11-18 18:07:19,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 727 transitions. [2024-11-18 18:07:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 18:07:19,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:19,763 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:19,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 18:07:19,763 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:19,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1161984459, now seen corresponding path program 1 times [2024-11-18 18:07:19,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:19,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669548057] [2024-11-18 18:07:19,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:19,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:20,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:20,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669548057] [2024-11-18 18:07:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669548057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:20,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:20,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:20,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336234278] [2024-11-18 18:07:20,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:20,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:20,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:20,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:20,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:20,554 INFO L87 Difference]: Start difference. First operand 497 states and 727 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:20,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:20,659 INFO L93 Difference]: Finished difference Result 817 states and 1200 transitions. [2024-11-18 18:07:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:07:20,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-11-18 18:07:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:20,661 INFO L225 Difference]: With dead ends: 817 [2024-11-18 18:07:20,661 INFO L226 Difference]: Without dead ends: 535 [2024-11-18 18:07:20,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:07:20,662 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 988 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:20,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1883 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:20,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-18 18:07:20,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 499. [2024-11-18 18:07:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.463855421686747) internal successors, (729), 498 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:20,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 729 transitions. [2024-11-18 18:07:20,670 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 729 transitions. Word has length 168 [2024-11-18 18:07:20,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:20,671 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 729 transitions. [2024-11-18 18:07:20,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:20,671 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 729 transitions. [2024-11-18 18:07:20,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 18:07:20,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:20,672 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:20,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 18:07:20,673 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:20,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1061113191, now seen corresponding path program 1 times [2024-11-18 18:07:20,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:20,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837271222] [2024-11-18 18:07:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:20,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:21,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:21,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837271222] [2024-11-18 18:07:21,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837271222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:21,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:21,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:21,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241700848] [2024-11-18 18:07:21,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:21,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:21,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:21,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:21,366 INFO L87 Difference]: Start difference. First operand 499 states and 729 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:21,444 INFO L93 Difference]: Finished difference Result 789 states and 1159 transitions. [2024-11-18 18:07:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:21,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-11-18 18:07:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:21,447 INFO L225 Difference]: With dead ends: 789 [2024-11-18 18:07:21,447 INFO L226 Difference]: Without dead ends: 528 [2024-11-18 18:07:21,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:21,448 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 931 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:21,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1258 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-18 18:07:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 526. [2024-11-18 18:07:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.4628571428571429) internal successors, (768), 525 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 768 transitions. [2024-11-18 18:07:21,457 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 768 transitions. Word has length 168 [2024-11-18 18:07:21,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:21,458 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 768 transitions. [2024-11-18 18:07:21,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:21,458 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 768 transitions. [2024-11-18 18:07:21,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 18:07:21,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:21,459 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:21,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 18:07:21,459 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:21,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash -91921578, now seen corresponding path program 1 times [2024-11-18 18:07:21,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:21,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018609425] [2024-11-18 18:07:21,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:21,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:22,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:22,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018609425] [2024-11-18 18:07:22,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018609425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:22,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:22,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:22,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236197862] [2024-11-18 18:07:22,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:22,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:22,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:22,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:22,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:22,165 INFO L87 Difference]: Start difference. First operand 526 states and 768 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:22,261 INFO L93 Difference]: Finished difference Result 816 states and 1197 transitions. [2024-11-18 18:07:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:07:22,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2024-11-18 18:07:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:22,263 INFO L225 Difference]: With dead ends: 816 [2024-11-18 18:07:22,263 INFO L226 Difference]: Without dead ends: 537 [2024-11-18 18:07:22,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:07:22,265 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 970 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:22,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1881 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-18 18:07:22,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 528. [2024-11-18 18:07:22,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.4611005692599621) internal successors, (770), 527 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 770 transitions. [2024-11-18 18:07:22,274 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 770 transitions. Word has length 169 [2024-11-18 18:07:22,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:22,274 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 770 transitions. [2024-11-18 18:07:22,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 770 transitions. [2024-11-18 18:07:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 18:07:22,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:22,275 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:22,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 18:07:22,276 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:22,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1132940090, now seen corresponding path program 1 times [2024-11-18 18:07:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:22,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192577543] [2024-11-18 18:07:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:22,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:23,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:23,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192577543] [2024-11-18 18:07:23,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192577543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:23,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:23,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:23,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321515945] [2024-11-18 18:07:23,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:23,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:23,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:23,005 INFO L87 Difference]: Start difference. First operand 528 states and 770 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:23,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:23,103 INFO L93 Difference]: Finished difference Result 796 states and 1167 transitions. [2024-11-18 18:07:23,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:07:23,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2024-11-18 18:07:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:23,106 INFO L225 Difference]: With dead ends: 796 [2024-11-18 18:07:23,106 INFO L226 Difference]: Without dead ends: 535 [2024-11-18 18:07:23,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:07:23,108 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 939 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:23,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 2101 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:23,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-18 18:07:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 531. [2024-11-18 18:07:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.460377358490566) internal successors, (774), 530 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 774 transitions. [2024-11-18 18:07:23,117 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 774 transitions. Word has length 169 [2024-11-18 18:07:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:23,118 INFO L471 AbstractCegarLoop]: Abstraction has 531 states and 774 transitions. [2024-11-18 18:07:23,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 774 transitions. [2024-11-18 18:07:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 18:07:23,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:23,119 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:23,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 18:07:23,119 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:23,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1516275082, now seen corresponding path program 1 times [2024-11-18 18:07:23,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:23,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513120795] [2024-11-18 18:07:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:23,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:23,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513120795] [2024-11-18 18:07:23,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513120795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:23,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:23,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:23,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772339969] [2024-11-18 18:07:23,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:23,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:23,789 INFO L87 Difference]: Start difference. First operand 531 states and 774 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:23,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:23,907 INFO L93 Difference]: Finished difference Result 802 states and 1175 transitions. [2024-11-18 18:07:23,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:07:23,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2024-11-18 18:07:23,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:23,909 INFO L225 Difference]: With dead ends: 802 [2024-11-18 18:07:23,909 INFO L226 Difference]: Without dead ends: 541 [2024-11-18 18:07:23,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:07:23,910 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 948 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:23,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2101 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:23,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-18 18:07:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 537. [2024-11-18 18:07:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.458955223880597) internal successors, (782), 536 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:23,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 782 transitions. [2024-11-18 18:07:23,920 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 782 transitions. Word has length 170 [2024-11-18 18:07:23,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:23,921 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 782 transitions. [2024-11-18 18:07:23,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:23,921 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 782 transitions. [2024-11-18 18:07:23,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 18:07:23,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:23,923 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:23,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 18:07:23,923 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:23,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash 724587046, now seen corresponding path program 1 times [2024-11-18 18:07:23,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:23,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034325227] [2024-11-18 18:07:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:24,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:24,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034325227] [2024-11-18 18:07:24,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034325227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:07:24,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540893579] [2024-11-18 18:07:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:24,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:07:24,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:07:24,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:07:24,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 18:07:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:25,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-18 18:07:25,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:07:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:25,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 18:07:25,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540893579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:25,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 18:07:25,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-18 18:07:25,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52814703] [2024-11-18 18:07:25,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:25,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:25,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:25,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-18 18:07:25,873 INFO L87 Difference]: Start difference. First operand 537 states and 782 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:26,107 INFO L93 Difference]: Finished difference Result 1003 states and 1463 transitions. [2024-11-18 18:07:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:07:26,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2024-11-18 18:07:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:26,111 INFO L225 Difference]: With dead ends: 1003 [2024-11-18 18:07:26,111 INFO L226 Difference]: Without dead ends: 540 [2024-11-18 18:07:26,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-18 18:07:26,112 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 332 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:26,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1979 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:07:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-11-18 18:07:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2024-11-18 18:07:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.4564007421150278) internal successors, (785), 539 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 785 transitions. [2024-11-18 18:07:26,123 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 785 transitions. Word has length 170 [2024-11-18 18:07:26,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:26,124 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 785 transitions. [2024-11-18 18:07:26,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 785 transitions. [2024-11-18 18:07:26,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 18:07:26,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:26,125 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:26,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 18:07:26,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 18:07:26,326 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:26,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash -74284501, now seen corresponding path program 1 times [2024-11-18 18:07:26,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:26,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611234726] [2024-11-18 18:07:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:26,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:27,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:27,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611234726] [2024-11-18 18:07:27,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611234726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:27,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:27,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:27,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751099208] [2024-11-18 18:07:27,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:27,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:27,486 INFO L87 Difference]: Start difference. First operand 540 states and 785 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:27,571 INFO L93 Difference]: Finished difference Result 830 states and 1215 transitions. [2024-11-18 18:07:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:27,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2024-11-18 18:07:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:27,574 INFO L225 Difference]: With dead ends: 830 [2024-11-18 18:07:27,574 INFO L226 Difference]: Without dead ends: 569 [2024-11-18 18:07:27,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:27,575 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 258 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:27,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1600 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:27,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-18 18:07:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 567. [2024-11-18 18:07:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.4558303886925794) internal successors, (824), 566 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 824 transitions. [2024-11-18 18:07:27,585 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 824 transitions. Word has length 171 [2024-11-18 18:07:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:27,585 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 824 transitions. [2024-11-18 18:07:27,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 824 transitions. [2024-11-18 18:07:27,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 18:07:27,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:27,587 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:27,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 18:07:27,587 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:27,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:27,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2125515446, now seen corresponding path program 1 times [2024-11-18 18:07:27,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:27,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969157976] [2024-11-18 18:07:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:27,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:28,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:28,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969157976] [2024-11-18 18:07:28,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969157976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:28,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:28,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:28,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247626139] [2024-11-18 18:07:28,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:28,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:28,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:28,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:28,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:28,232 INFO L87 Difference]: Start difference. First operand 567 states and 824 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:28,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:28,336 INFO L93 Difference]: Finished difference Result 984 states and 1433 transitions. [2024-11-18 18:07:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:28,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2024-11-18 18:07:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:28,339 INFO L225 Difference]: With dead ends: 984 [2024-11-18 18:07:28,339 INFO L226 Difference]: Without dead ends: 567 [2024-11-18 18:07:28,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:28,340 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 986 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:28,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1263 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:28,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-11-18 18:07:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2024-11-18 18:07:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.4540636042402826) internal successors, (823), 566 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 823 transitions. [2024-11-18 18:07:28,353 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 823 transitions. Word has length 172 [2024-11-18 18:07:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:28,353 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 823 transitions. [2024-11-18 18:07:28,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 823 transitions. [2024-11-18 18:07:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 18:07:28,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:28,354 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:28,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 18:07:28,354 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:28,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash -917272252, now seen corresponding path program 1 times [2024-11-18 18:07:28,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:28,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905740936] [2024-11-18 18:07:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:28,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:28,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:28,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905740936] [2024-11-18 18:07:28,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905740936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:28,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:28,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179608526] [2024-11-18 18:07:28,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:28,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:28,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:28,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:28,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:28,977 INFO L87 Difference]: Start difference. First operand 567 states and 823 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 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) [2024-11-18 18:07:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:29,053 INFO L93 Difference]: Finished difference Result 952 states and 1386 transitions. [2024-11-18 18:07:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:29,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 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 173 [2024-11-18 18:07:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:29,056 INFO L225 Difference]: With dead ends: 952 [2024-11-18 18:07:29,056 INFO L226 Difference]: Without dead ends: 565 [2024-11-18 18:07:29,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:29,057 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 968 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:29,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 1263 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:07:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-18 18:07:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-18 18:07:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.4539007092198581) internal successors, (820), 564 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 820 transitions. [2024-11-18 18:07:29,067 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 820 transitions. Word has length 173 [2024-11-18 18:07:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:29,067 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 820 transitions. [2024-11-18 18:07:29,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 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) [2024-11-18 18:07:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 820 transitions. [2024-11-18 18:07:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 18:07:29,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:29,069 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:29,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 18:07:29,069 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:29,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1071220696, now seen corresponding path program 1 times [2024-11-18 18:07:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:29,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458196958] [2024-11-18 18:07:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:29,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:30,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:30,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458196958] [2024-11-18 18:07:30,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458196958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:30,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:30,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:30,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389282594] [2024-11-18 18:07:30,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:30,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:30,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:30,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:30,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:30,246 INFO L87 Difference]: Start difference. First operand 565 states and 820 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 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) [2024-11-18 18:07:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:30,326 INFO L93 Difference]: Finished difference Result 828 states and 1210 transitions. [2024-11-18 18:07:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:30,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 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 173 [2024-11-18 18:07:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:30,328 INFO L225 Difference]: With dead ends: 828 [2024-11-18 18:07:30,328 INFO L226 Difference]: Without dead ends: 567 [2024-11-18 18:07:30,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:30,329 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 254 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:30,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1601 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:07:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-11-18 18:07:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 566. [2024-11-18 18:07:30,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.4530973451327434) internal successors, (821), 565 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:30,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 821 transitions. [2024-11-18 18:07:30,337 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 821 transitions. Word has length 173 [2024-11-18 18:07:30,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:30,337 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 821 transitions. [2024-11-18 18:07:30,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 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) [2024-11-18 18:07:30,338 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 821 transitions. [2024-11-18 18:07:30,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 18:07:30,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:30,339 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:30,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 18:07:30,339 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:30,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash 233314096, now seen corresponding path program 1 times [2024-11-18 18:07:30,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:30,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030813405] [2024-11-18 18:07:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:30,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:31,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030813405] [2024-11-18 18:07:31,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030813405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:07:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870009429] [2024-11-18 18:07:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:31,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:07:31,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:07:31,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:07:31,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 18:07:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:32,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-18 18:07:32,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:07:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:32,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:07:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:33,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870009429] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:07:33,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:07:33,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 29 [2024-11-18 18:07:33,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671729547] [2024-11-18 18:07:33,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:07:33,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 18:07:33,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 18:07:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2024-11-18 18:07:33,242 INFO L87 Difference]: Start difference. First operand 566 states and 821 transitions. Second operand has 29 states, 29 states have (on average 17.517241379310345) internal successors, (508), 29 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:33,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:33,999 INFO L93 Difference]: Finished difference Result 1558 states and 2262 transitions. [2024-11-18 18:07:34,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 18:07:34,000 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 17.517241379310345) internal successors, (508), 29 states have internal predecessors, (508), 0 states have call successors, (0), 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 174 [2024-11-18 18:07:34,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:34,003 INFO L225 Difference]: With dead ends: 1558 [2024-11-18 18:07:34,003 INFO L226 Difference]: Without dead ends: 1051 [2024-11-18 18:07:34,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 18:07:34,004 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 2454 mSDsluCounter, 8990 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2454 SdHoareTripleChecker+Valid, 9683 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:34,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2454 Valid, 9683 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 18:07:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-11-18 18:07:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 818. [2024-11-18 18:07:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 1.4406364749082008) internal successors, (1177), 817 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1177 transitions. [2024-11-18 18:07:34,015 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1177 transitions. Word has length 174 [2024-11-18 18:07:34,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:34,015 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 1177 transitions. [2024-11-18 18:07:34,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 17.517241379310345) internal successors, (508), 29 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:34,015 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1177 transitions. [2024-11-18 18:07:34,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 18:07:34,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:34,017 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:34,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 18:07:34,221 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,SelfDestructingSolverStorable22 [2024-11-18 18:07:34,222 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:34,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:34,223 INFO L85 PathProgramCache]: Analyzing trace with hash 57863534, now seen corresponding path program 1 times [2024-11-18 18:07:34,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:34,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22308350] [2024-11-18 18:07:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:34,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:34,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22308350] [2024-11-18 18:07:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22308350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:34,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229774045] [2024-11-18 18:07:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:34,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:34,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:34,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:34,592 INFO L87 Difference]: Start difference. First operand 818 states and 1177 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:34,638 INFO L93 Difference]: Finished difference Result 1605 states and 2312 transitions. [2024-11-18 18:07:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:07:34,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2024-11-18 18:07:34,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:34,640 INFO L225 Difference]: With dead ends: 1605 [2024-11-18 18:07:34,640 INFO L226 Difference]: Without dead ends: 838 [2024-11-18 18:07:34,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:34,641 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 5 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:34,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2575 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:07:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-18 18:07:34,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2024-11-18 18:07:34,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.4372759856630823) internal successors, (1203), 837 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1203 transitions. [2024-11-18 18:07:34,653 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1203 transitions. Word has length 175 [2024-11-18 18:07:34,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:34,653 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1203 transitions. [2024-11-18 18:07:34,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:34,653 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1203 transitions. [2024-11-18 18:07:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 18:07:34,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:34,654 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:34,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 18:07:34,655 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:34,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:34,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1070789959, now seen corresponding path program 1 times [2024-11-18 18:07:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:34,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070445172] [2024-11-18 18:07:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:34,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:34,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:34,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070445172] [2024-11-18 18:07:34,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070445172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:34,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:34,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870630287] [2024-11-18 18:07:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:34,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:34,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:34,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:34,942 INFO L87 Difference]: Start difference. First operand 838 states and 1203 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:34,994 INFO L93 Difference]: Finished difference Result 1353 states and 1950 transitions. [2024-11-18 18:07:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:34,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2024-11-18 18:07:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:34,997 INFO L225 Difference]: With dead ends: 1353 [2024-11-18 18:07:34,997 INFO L226 Difference]: Without dead ends: 828 [2024-11-18 18:07:34,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:34,998 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 1053 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:34,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1275 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:07:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2024-11-18 18:07:35,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2024-11-18 18:07:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 1.4353083434099154) internal successors, (1187), 827 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1187 transitions. [2024-11-18 18:07:35,013 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1187 transitions. Word has length 175 [2024-11-18 18:07:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:35,013 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 1187 transitions. [2024-11-18 18:07:35,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1187 transitions. [2024-11-18 18:07:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 18:07:35,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:35,015 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:35,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 18:07:35,015 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:35,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:35,016 INFO L85 PathProgramCache]: Analyzing trace with hash -99283010, now seen corresponding path program 1 times [2024-11-18 18:07:35,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:35,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939363425] [2024-11-18 18:07:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:35,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:35,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939363425] [2024-11-18 18:07:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939363425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:35,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:35,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434357823] [2024-11-18 18:07:35,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:35,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:35,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:35,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:35,293 INFO L87 Difference]: Start difference. First operand 828 states and 1187 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:35,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:35,341 INFO L93 Difference]: Finished difference Result 1597 states and 2292 transitions. [2024-11-18 18:07:35,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:35,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2024-11-18 18:07:35,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:35,345 INFO L225 Difference]: With dead ends: 1597 [2024-11-18 18:07:35,345 INFO L226 Difference]: Without dead ends: 825 [2024-11-18 18:07:35,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:35,347 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 1071 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:35,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1276 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:07:35,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2024-11-18 18:07:35,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2024-11-18 18:07:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 1.433252427184466) internal successors, (1181), 824 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1181 transitions. [2024-11-18 18:07:35,364 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1181 transitions. Word has length 176 [2024-11-18 18:07:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:35,365 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1181 transitions. [2024-11-18 18:07:35,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1181 transitions. [2024-11-18 18:07:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 18:07:35,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:35,366 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:35,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 18:07:35,366 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:35,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash -571668603, now seen corresponding path program 1 times [2024-11-18 18:07:35,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:35,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769323273] [2024-11-18 18:07:35,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:35,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:35,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:35,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769323273] [2024-11-18 18:07:35,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769323273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:35,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:35,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:07:35,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597834167] [2024-11-18 18:07:35,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:35,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:07:35,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:35,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:07:35,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:07:35,633 INFO L87 Difference]: Start difference. First operand 825 states and 1181 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:35,699 INFO L93 Difference]: Finished difference Result 1344 states and 1932 transitions. [2024-11-18 18:07:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:07:35,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2024-11-18 18:07:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:35,702 INFO L225 Difference]: With dead ends: 1344 [2024-11-18 18:07:35,702 INFO L226 Difference]: Without dead ends: 571 [2024-11-18 18:07:35,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:35,703 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 1097 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:35,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 1269 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:07:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-18 18:07:35,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2024-11-18 18:07:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.4403508771929825) internal successors, (821), 570 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 821 transitions. [2024-11-18 18:07:35,712 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 821 transitions. Word has length 176 [2024-11-18 18:07:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:35,712 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 821 transitions. [2024-11-18 18:07:35,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 821 transitions. [2024-11-18 18:07:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-18 18:07:35,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:35,714 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 18:07:35,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 18:07:35,714 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:35,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1172625233, now seen corresponding path program 1 times [2024-11-18 18:07:35,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:35,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254979755] [2024-11-18 18:07:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:35,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:38,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:38,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254979755] [2024-11-18 18:07:38,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254979755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:38,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:38,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:07:38,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328276403] [2024-11-18 18:07:38,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:38,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:07:38,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:38,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:07:38,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:07:38,005 INFO L87 Difference]: Start difference. First operand 571 states and 821 transitions. Second operand has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:38,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:38,314 INFO L93 Difference]: Finished difference Result 1779 states and 2598 transitions. [2024-11-18 18:07:38,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 18:07:38,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 0 states have call successors, (0), 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 303 [2024-11-18 18:07:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:38,322 INFO L225 Difference]: With dead ends: 1779 [2024-11-18 18:07:38,323 INFO L226 Difference]: Without dead ends: 1509 [2024-11-18 18:07:38,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-18 18:07:38,325 INFO L432 NwaCegarLoop]: 698 mSDtfsCounter, 1490 mSDsluCounter, 3782 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:38,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 4480 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:07:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-18 18:07:38,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1064. [2024-11-18 18:07:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 1.4459078080903105) internal successors, (1537), 1063 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1537 transitions. [2024-11-18 18:07:38,343 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1537 transitions. Word has length 303 [2024-11-18 18:07:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:38,344 INFO L471 AbstractCegarLoop]: Abstraction has 1064 states and 1537 transitions. [2024-11-18 18:07:38,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1537 transitions. [2024-11-18 18:07:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 18:07:38,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:38,347 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:07:38,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 18:07:38,347 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:38,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1079874154, now seen corresponding path program 1 times [2024-11-18 18:07:38,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:38,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118302105] [2024-11-18 18:07:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:38,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:39,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:39,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118302105] [2024-11-18 18:07:39,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118302105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:39,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:39,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:39,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184177842] [2024-11-18 18:07:39,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:39,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:39,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:39,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:39,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:39,583 INFO L87 Difference]: Start difference. First operand 1064 states and 1537 transitions. Second operand has 7 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:39,885 INFO L93 Difference]: Finished difference Result 2076 states and 3036 transitions. [2024-11-18 18:07:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:07:39,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 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 [2024-11-18 18:07:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:39,890 INFO L225 Difference]: With dead ends: 2076 [2024-11-18 18:07:39,890 INFO L226 Difference]: Without dead ends: 1542 [2024-11-18 18:07:39,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:07:39,891 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 1335 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:39,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 3230 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:07:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2024-11-18 18:07:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1087. [2024-11-18 18:07:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 1.4410681399631675) internal successors, (1565), 1086 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1565 transitions. [2024-11-18 18:07:39,907 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1565 transitions. Word has length 304 [2024-11-18 18:07:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:39,907 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1565 transitions. [2024-11-18 18:07:39,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1565 transitions. [2024-11-18 18:07:39,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 18:07:39,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:39,911 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 18:07:39,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 18:07:39,912 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:39,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1194745680, now seen corresponding path program 1 times [2024-11-18 18:07:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:39,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383542788] [2024-11-18 18:07:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:39,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-18 18:07:40,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:40,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383542788] [2024-11-18 18:07:40,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383542788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:40,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:40,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377111161] [2024-11-18 18:07:40,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:40,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:40,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:40,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:40,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:40,908 INFO L87 Difference]: Start difference. First operand 1087 states and 1565 transitions. Second operand has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:40,986 INFO L93 Difference]: Finished difference Result 1882 states and 2721 transitions. [2024-11-18 18:07:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:07:40,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 0 states have call successors, (0), 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 [2024-11-18 18:07:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:40,989 INFO L225 Difference]: With dead ends: 1882 [2024-11-18 18:07:40,989 INFO L226 Difference]: Without dead ends: 852 [2024-11-18 18:07:40,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-18 18:07:40,991 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 1001 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:40,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 2107 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:07:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-11-18 18:07:40,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2024-11-18 18:07:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.4441833137485312) internal successors, (1229), 851 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:41,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1229 transitions. [2024-11-18 18:07:41,000 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1229 transitions. Word has length 304 [2024-11-18 18:07:41,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:41,000 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1229 transitions. [2024-11-18 18:07:41,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1229 transitions. [2024-11-18 18:07:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-11-18 18:07:41,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:41,002 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 18:07:41,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-18 18:07:41,003 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:41,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:41,003 INFO L85 PathProgramCache]: Analyzing trace with hash 639038299, now seen corresponding path program 1 times [2024-11-18 18:07:41,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:41,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814218510] [2024-11-18 18:07:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:41,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:42,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:42,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814218510] [2024-11-18 18:07:42,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814218510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:07:42,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:07:42,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:07:42,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455918679] [2024-11-18 18:07:42,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:07:42,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:07:42,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:42,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:07:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:07:42,773 INFO L87 Difference]: Start difference. First operand 852 states and 1229 transitions. Second operand has 7 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:42,979 INFO L93 Difference]: Finished difference Result 1864 states and 2728 transitions. [2024-11-18 18:07:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:07:42,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 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 305 [2024-11-18 18:07:42,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:42,982 INFO L225 Difference]: With dead ends: 1864 [2024-11-18 18:07:42,982 INFO L226 Difference]: Without dead ends: 1310 [2024-11-18 18:07:42,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:07:42,983 INFO L432 NwaCegarLoop]: 691 mSDtfsCounter, 1850 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:42,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1850 Valid, 2830 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:07:42,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2024-11-18 18:07:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 853. [2024-11-18 18:07:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 1.442488262910798) internal successors, (1229), 852 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1229 transitions. [2024-11-18 18:07:42,994 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1229 transitions. Word has length 305 [2024-11-18 18:07:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:42,994 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1229 transitions. [2024-11-18 18:07:42,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1229 transitions. [2024-11-18 18:07:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-18 18:07:42,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:42,996 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 18:07:42,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-18 18:07:42,997 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:42,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash 291257767, now seen corresponding path program 1 times [2024-11-18 18:07:42,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:42,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303377810] [2024-11-18 18:07:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:42,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 119 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:47,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:47,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303377810] [2024-11-18 18:07:47,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303377810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:07:47,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247331659] [2024-11-18 18:07:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:47,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:07:47,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:07:47,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:07:47,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 18:07:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:48,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-18 18:07:48,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:07:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 99 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:49,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:07:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 93 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:51,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247331659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:07:51,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:07:51,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 17] total 40 [2024-11-18 18:07:51,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814118815] [2024-11-18 18:07:51,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:07:51,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-18 18:07:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:07:51,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-18 18:07:51,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1385, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 18:07:51,091 INFO L87 Difference]: Start difference. First operand 853 states and 1229 transitions. Second operand has 40 states, 40 states have (on average 20.425) internal successors, (817), 40 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:54,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:07:54,539 INFO L93 Difference]: Finished difference Result 3866 states and 5699 transitions. [2024-11-18 18:07:54,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-18 18:07:54,539 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 20.425) internal successors, (817), 40 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2024-11-18 18:07:54,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:07:54,548 INFO L225 Difference]: With dead ends: 3866 [2024-11-18 18:07:54,548 INFO L226 Difference]: Without dead ends: 3311 [2024-11-18 18:07:54,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 589 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1018, Invalid=6992, Unknown=0, NotChecked=0, Total=8010 [2024-11-18 18:07:54,555 INFO L432 NwaCegarLoop]: 635 mSDtfsCounter, 7491 mSDsluCounter, 14275 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7491 SdHoareTripleChecker+Valid, 14910 SdHoareTripleChecker+Invalid, 3167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:07:54,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7491 Valid, 14910 Invalid, 3167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 18:07:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2024-11-18 18:07:54,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 1541. [2024-11-18 18:07:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.4493506493506494) internal successors, (2232), 1540 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2232 transitions. [2024-11-18 18:07:54,592 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2232 transitions. Word has length 306 [2024-11-18 18:07:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:07:54,593 INFO L471 AbstractCegarLoop]: Abstraction has 1541 states and 2232 transitions. [2024-11-18 18:07:54,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 20.425) internal successors, (817), 40 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:07:54,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2232 transitions. [2024-11-18 18:07:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-18 18:07:54,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:07:54,597 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 18:07:54,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 18:07:54,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:07:54,802 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:07:54,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:07:54,803 INFO L85 PathProgramCache]: Analyzing trace with hash -478327234, now seen corresponding path program 1 times [2024-11-18 18:07:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:07:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679651950] [2024-11-18 18:07:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:54,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:07:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 106 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:57,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:07:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679651950] [2024-11-18 18:07:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679651950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:07:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119503269] [2024-11-18 18:07:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:07:57,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:07:57,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:07:57,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:07:57,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 18:07:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:07:58,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-18 18:07:58,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:07:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 29 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:07:59,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:08:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 18:08:00,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119503269] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 18:08:00,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 18:08:00,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 17] total 30 [2024-11-18 18:08:00,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143227570] [2024-11-18 18:08:00,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:08:00,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:08:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:08:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:08:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2024-11-18 18:08:00,151 INFO L87 Difference]: Start difference. First operand 1541 states and 2232 transitions. Second operand has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:00,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:08:00,287 INFO L93 Difference]: Finished difference Result 4120 states and 6036 transitions. [2024-11-18 18:08:00,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:08:00,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 0 states have call successors, (0), 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 309 [2024-11-18 18:08:00,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:08:00,295 INFO L225 Difference]: With dead ends: 4120 [2024-11-18 18:08:00,295 INFO L226 Difference]: Without dead ends: 3029 [2024-11-18 18:08:00,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2024-11-18 18:08:00,297 INFO L432 NwaCegarLoop]: 915 mSDtfsCounter, 564 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:08:00,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 3352 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:08:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2024-11-18 18:08:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2045. [2024-11-18 18:08:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 2044 states have (on average 1.4589041095890412) internal successors, (2982), 2044 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2982 transitions. [2024-11-18 18:08:00,326 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2982 transitions. Word has length 309 [2024-11-18 18:08:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:08:00,327 INFO L471 AbstractCegarLoop]: Abstraction has 2045 states and 2982 transitions. [2024-11-18 18:08:00,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2982 transitions. [2024-11-18 18:08:00,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-18 18:08:00,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:08:00,330 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 18:08:00,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 18:08:00,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:08:00,531 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:08:00,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:08:00,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1374868354, now seen corresponding path program 1 times [2024-11-18 18:08:00,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:08:00,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588972013] [2024-11-18 18:08:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:08:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:08:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:08:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 18:08:02,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:08:02,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588972013] [2024-11-18 18:08:02,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588972013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:08:02,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:08:02,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:08:02,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297967823] [2024-11-18 18:08:02,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:08:02,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:08:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:08:02,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:08:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:08:02,376 INFO L87 Difference]: Start difference. First operand 2045 states and 2982 transitions. Second operand has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:08:02,439 INFO L93 Difference]: Finished difference Result 4880 states and 7183 transitions. [2024-11-18 18:08:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 18:08:02,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 0 states have call successors, (0), 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 309 [2024-11-18 18:08:02,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:08:02,446 INFO L225 Difference]: With dead ends: 4880 [2024-11-18 18:08:02,446 INFO L226 Difference]: Without dead ends: 3357 [2024-11-18 18:08:02,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:08:02,449 INFO L432 NwaCegarLoop]: 690 mSDtfsCounter, 261 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:08:02,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 3161 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:08:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2024-11-18 18:08:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 2255. [2024-11-18 18:08:02,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2254 states have (on average 1.4551907719609583) internal successors, (3280), 2254 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3280 transitions. [2024-11-18 18:08:02,486 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3280 transitions. Word has length 309 [2024-11-18 18:08:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:08:02,487 INFO L471 AbstractCegarLoop]: Abstraction has 2255 states and 3280 transitions. [2024-11-18 18:08:02,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:02,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3280 transitions. [2024-11-18 18:08:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-18 18:08:02,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:08:02,491 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 18:08:02,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-18 18:08:02,491 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:08:02,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:08:02,491 INFO L85 PathProgramCache]: Analyzing trace with hash -569934497, now seen corresponding path program 1 times [2024-11-18 18:08:02,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:08:02,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768967621] [2024-11-18 18:08:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:08:02,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:08:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:08:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 50 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:08:04,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:08:04,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768967621] [2024-11-18 18:08:04,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768967621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:08:04,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819979914] [2024-11-18 18:08:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:08:04,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:08:04,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:08:04,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:08:04,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 18:08:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:08:05,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-18 18:08:05,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:08:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 51 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:08:06,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:08:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-18 18:08:06,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819979914] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 18:08:06,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 18:08:06,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 10] total 21 [2024-11-18 18:08:06,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947675332] [2024-11-18 18:08:06,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:08:06,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:08:06,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:08:06,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:08:06,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-18 18:08:06,575 INFO L87 Difference]: Start difference. First operand 2255 states and 3280 transitions. Second operand has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:08:06,626 INFO L93 Difference]: Finished difference Result 4070 states and 5955 transitions. [2024-11-18 18:08:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:08:06,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 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 310 [2024-11-18 18:08:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:08:06,630 INFO L225 Difference]: With dead ends: 4070 [2024-11-18 18:08:06,630 INFO L226 Difference]: Without dead ends: 2359 [2024-11-18 18:08:06,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-18 18:08:06,636 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 26 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:08:06,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1765 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:08:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2024-11-18 18:08:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2359. [2024-11-18 18:08:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 2358 states have (on average 1.4546225614927906) internal successors, (3430), 2358 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 3430 transitions. [2024-11-18 18:08:06,660 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 3430 transitions. Word has length 310 [2024-11-18 18:08:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:08:06,660 INFO L471 AbstractCegarLoop]: Abstraction has 2359 states and 3430 transitions. [2024-11-18 18:08:06,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 3430 transitions. [2024-11-18 18:08:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-18 18:08:06,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:08:06,664 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:08:06,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 18:08:06,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-18 18:08:06,864 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:08:06,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:08:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash 399716141, now seen corresponding path program 1 times [2024-11-18 18:08:06,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:08:06,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504975084] [2024-11-18 18:08:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:08:06,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:08:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:08:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 106 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:08:09,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:08:09,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504975084] [2024-11-18 18:08:09,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504975084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:08:09,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068043473] [2024-11-18 18:08:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:08:09,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:08:09,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:08:09,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:08:09,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 18:08:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:08:10,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-18 18:08:10,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:08:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 29 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:08:11,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:08:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 23 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:08:13,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068043473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:08:13,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:08:13,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 15] total 33 [2024-11-18 18:08:13,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276187093] [2024-11-18 18:08:13,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:08:13,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 18:08:13,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:08:13,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 18:08:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 18:08:13,296 INFO L87 Difference]: Start difference. First operand 2359 states and 3430 transitions. Second operand has 33 states, 33 states have (on average 27.242424242424242) internal successors, (899), 33 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:15,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:08:15,302 INFO L93 Difference]: Finished difference Result 8489 states and 12510 transitions. [2024-11-18 18:08:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-18 18:08:15,303 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 27.242424242424242) internal successors, (899), 33 states have internal predecessors, (899), 0 states have call successors, (0), 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 310 [2024-11-18 18:08:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:08:15,312 INFO L225 Difference]: With dead ends: 8489 [2024-11-18 18:08:15,312 INFO L226 Difference]: Without dead ends: 6418 [2024-11-18 18:08:15,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1162, Invalid=6494, Unknown=0, NotChecked=0, Total=7656 [2024-11-18 18:08:15,318 INFO L432 NwaCegarLoop]: 699 mSDtfsCounter, 9388 mSDsluCounter, 13301 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9388 SdHoareTripleChecker+Valid, 14000 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:08:15,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9388 Valid, 14000 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 18:08:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2024-11-18 18:08:15,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 2179. [2024-11-18 18:08:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 2178 states have (on average 1.4490358126721763) internal successors, (3156), 2178 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:15,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 3156 transitions. [2024-11-18 18:08:15,356 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 3156 transitions. Word has length 310 [2024-11-18 18:08:15,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:08:15,356 INFO L471 AbstractCegarLoop]: Abstraction has 2179 states and 3156 transitions. [2024-11-18 18:08:15,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 27.242424242424242) internal successors, (899), 33 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 3156 transitions. [2024-11-18 18:08:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-18 18:08:15,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:08:15,359 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:08:15,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 18:08:15,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:08:15,560 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:08:15,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:08:15,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1445446730, now seen corresponding path program 1 times [2024-11-18 18:08:15,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:08:15,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449507668] [2024-11-18 18:08:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:08:15,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:08:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:08:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 127 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:08:17,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:08:17,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449507668] [2024-11-18 18:08:17,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449507668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:08:17,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114906113] [2024-11-18 18:08:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:08:17,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:08:17,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:08:17,486 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:08:17,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 18:08:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:08:18,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-18 18:08:18,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:08:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 99 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:08:19,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:08:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 99 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:08:19,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114906113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:08:19,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:08:19,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 27 [2024-11-18 18:08:19,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225543953] [2024-11-18 18:08:19,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:08:19,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 18:08:19,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:08:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 18:08:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2024-11-18 18:08:19,876 INFO L87 Difference]: Start difference. First operand 2179 states and 3156 transitions. Second operand has 27 states, 27 states have (on average 27.25925925925926) internal successors, (736), 27 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:08:20,756 INFO L93 Difference]: Finished difference Result 5532 states and 8057 transitions. [2024-11-18 18:08:20,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 18:08:20,757 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 27.25925925925926) internal successors, (736), 27 states have internal predecessors, (736), 0 states have call successors, (0), 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 310 [2024-11-18 18:08:20,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:08:20,761 INFO L225 Difference]: With dead ends: 5532 [2024-11-18 18:08:20,761 INFO L226 Difference]: Without dead ends: 3457 [2024-11-18 18:08:20,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=495, Invalid=1667, Unknown=0, NotChecked=0, Total=2162 [2024-11-18 18:08:20,764 INFO L432 NwaCegarLoop]: 860 mSDtfsCounter, 5977 mSDsluCounter, 6966 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5977 SdHoareTripleChecker+Valid, 7826 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:08:20,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5977 Valid, 7826 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 18:08:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2024-11-18 18:08:20,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 2318. [2024-11-18 18:08:20,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.4432455761760898) internal successors, (3344), 2317 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3344 transitions. [2024-11-18 18:08:20,787 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3344 transitions. Word has length 310 [2024-11-18 18:08:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:08:20,787 INFO L471 AbstractCegarLoop]: Abstraction has 2318 states and 3344 transitions. [2024-11-18 18:08:20,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 27.25925925925926) internal successors, (736), 27 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:08:20,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3344 transitions. [2024-11-18 18:08:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-18 18:08:20,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:08:20,789 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 18:08:20,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 18:08:20,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:08:20,990 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:08:20,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:08:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1903394068, now seen corresponding path program 1 times [2024-11-18 18:08:20,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:08:20,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981272054] [2024-11-18 18:08:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:08:20,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:08:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat