./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1405ce2683e9fc1142823331bc73f3fedb50a2caefebf44893a593622c3225ed --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:40:15,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:40:16,026 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:40:16,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:40:16,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:40:16,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:40:16,057 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:40:16,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:40:16,059 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:40:16,060 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:40:16,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:40:16,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:40:16,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:40:16,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:40:16,064 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:40:16,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:40:16,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:40:16,065 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:40:16,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:40:16,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:40:16,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:40:16,069 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:40:16,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:40:16,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:40:16,070 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:40:16,070 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:40:16,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:40:16,070 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:40:16,071 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:40:16,071 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:40:16,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:40:16,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:40:16,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:40:16,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:40:16,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:40:16,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:40:16,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:40:16,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:40:16,074 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:40:16,074 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:40:16,075 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:40:16,075 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:40:16,075 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1405ce2683e9fc1142823331bc73f3fedb50a2caefebf44893a593622c3225ed [2024-11-18 09:40:16,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:40:16,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:40:16,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:40:16,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:40:16,370 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:40:16,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label20.c [2024-11-18 09:40:17,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:40:18,195 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:40:18,196 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label20.c [2024-11-18 09:40:18,220 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcbcb5ca/b088b769f9a24fd59a25ede8a5a140c2/FLAGb5c34da57 [2024-11-18 09:40:18,237 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcbcb5ca/b088b769f9a24fd59a25ede8a5a140c2 [2024-11-18 09:40:18,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:40:18,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:40:18,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:40:18,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:40:18,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:40:18,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:40:18" (1/1) ... [2024-11-18 09:40:18,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761ae6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:18, skipping insertion in model container [2024-11-18 09:40:18,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:40:18" (1/1) ... [2024-11-18 09:40:18,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:40:18,946 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label20.c[60555,60568] [2024-11-18 09:40:19,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:40:19,017 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:40:19,187 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label20.c[60555,60568] [2024-11-18 09:40:19,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:40:19,221 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:40:19,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19 WrapperNode [2024-11-18 09:40:19,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:40:19,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:40:19,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:40:19,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:40:19,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,355 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-18 09:40:19,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:40:19,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:40:19,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:40:19,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:40:19,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,379 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,422 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 09:40:19,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:40:19,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:40:19,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:40:19,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:40:19,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (1/1) ... [2024-11-18 09:40:19,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:40:19,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:19,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:40:19,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:40:19,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:40:19,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:40:19,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:40:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:40:19,701 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:40:19,703 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:40:21,739 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-18 09:40:21,739 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:40:21,768 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:40:21,768 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 09:40:21,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:40:21 BoogieIcfgContainer [2024-11-18 09:40:21,769 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:40:21,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:40:21,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:40:21,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:40:21,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:40:18" (1/3) ... [2024-11-18 09:40:21,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5a8a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:40:21, skipping insertion in model container [2024-11-18 09:40:21,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19" (2/3) ... [2024-11-18 09:40:21,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5a8a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:40:21, skipping insertion in model container [2024-11-18 09:40:21,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:40:21" (3/3) ... [2024-11-18 09:40:21,781 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label20.c [2024-11-18 09:40:21,801 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:40:21,801 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:40:21,880 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:40:21,887 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;@3ee02ef4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:40:21,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:40:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-18 09:40:21,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:21,921 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:21,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:21,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1628187933, now seen corresponding path program 1 times [2024-11-18 09:40:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:21,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307999599] [2024-11-18 09:40:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:21,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:22,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:22,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307999599] [2024-11-18 09:40:22,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307999599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:22,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:22,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:22,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940122709] [2024-11-18 09:40:22,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:22,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:22,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:22,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:22,888 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:24,056 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2024-11-18 09:40:24,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:24,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2024-11-18 09:40:24,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:24,071 INFO L225 Difference]: With dead ends: 857 [2024-11-18 09:40:24,072 INFO L226 Difference]: Without dead ends: 462 [2024-11-18 09:40:24,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:24,082 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 93 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:24,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 187 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 09:40:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-18 09:40:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2024-11-18 09:40:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2024-11-18 09:40:24,146 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 195 [2024-11-18 09:40:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:24,147 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2024-11-18 09:40:24,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2024-11-18 09:40:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-18 09:40:24,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:24,152 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:24,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:40:24,153 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:24,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:24,154 INFO L85 PathProgramCache]: Analyzing trace with hash -441148188, now seen corresponding path program 1 times [2024-11-18 09:40:24,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:24,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563540440] [2024-11-18 09:40:24,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:24,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:24,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:24,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563540440] [2024-11-18 09:40:24,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563540440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:24,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:24,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:24,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107682529] [2024-11-18 09:40:24,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:24,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:24,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:24,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:24,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:24,534 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:25,360 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2024-11-18 09:40:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:25,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2024-11-18 09:40:25,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:25,364 INFO L225 Difference]: With dead ends: 1344 [2024-11-18 09:40:25,364 INFO L226 Difference]: Without dead ends: 886 [2024-11-18 09:40:25,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:25,367 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:25,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:40:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-18 09:40:25,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2024-11-18 09:40:25,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5132336018411967) internal successors, (1315), 869 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1315 transitions. [2024-11-18 09:40:25,407 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1315 transitions. Word has length 203 [2024-11-18 09:40:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:25,407 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1315 transitions. [2024-11-18 09:40:25,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1315 transitions. [2024-11-18 09:40:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-18 09:40:25,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:25,416 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:25,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:40:25,416 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:25,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:25,417 INFO L85 PathProgramCache]: Analyzing trace with hash -735783591, now seen corresponding path program 1 times [2024-11-18 09:40:25,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:25,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290750774] [2024-11-18 09:40:25,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:25,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:40:26,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:26,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290750774] [2024-11-18 09:40:26,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290750774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:26,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:26,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:26,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620821228] [2024-11-18 09:40:26,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:26,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:40:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:40:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:26,232 INFO L87 Difference]: Start difference. First operand 870 states and 1315 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:27,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:27,134 INFO L93 Difference]: Finished difference Result 1884 states and 2886 transitions. [2024-11-18 09:40:27,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:40:27,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 210 [2024-11-18 09:40:27,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:27,140 INFO L225 Difference]: With dead ends: 1884 [2024-11-18 09:40:27,140 INFO L226 Difference]: Without dead ends: 842 [2024-11-18 09:40:27,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:27,143 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 299 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:27,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 47 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 09:40:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-11-18 09:40:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 842. [2024-11-18 09:40:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 1.3650416171224733) internal successors, (1148), 841 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1148 transitions. [2024-11-18 09:40:27,172 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1148 transitions. Word has length 210 [2024-11-18 09:40:27,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:27,172 INFO L471 AbstractCegarLoop]: Abstraction has 842 states and 1148 transitions. [2024-11-18 09:40:27,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:27,175 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1148 transitions. [2024-11-18 09:40:27,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-18 09:40:27,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:27,178 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:27,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:40:27,179 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:27,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1181739744, now seen corresponding path program 1 times [2024-11-18 09:40:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:27,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466605386] [2024-11-18 09:40:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:27,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:27,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466605386] [2024-11-18 09:40:27,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466605386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:27,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:27,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:27,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980117715] [2024-11-18 09:40:27,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:27,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:27,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:27,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:27,441 INFO L87 Difference]: Start difference. First operand 842 states and 1148 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:28,186 INFO L93 Difference]: Finished difference Result 2506 states and 3421 transitions. [2024-11-18 09:40:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:28,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-11-18 09:40:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:28,193 INFO L225 Difference]: With dead ends: 2506 [2024-11-18 09:40:28,193 INFO L226 Difference]: Without dead ends: 1666 [2024-11-18 09:40:28,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:28,197 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 229 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:28,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 71 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:40:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2024-11-18 09:40:28,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1663. [2024-11-18 09:40:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 1.325511432009627) internal successors, (2203), 1662 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2203 transitions. [2024-11-18 09:40:28,242 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2203 transitions. Word has length 218 [2024-11-18 09:40:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:28,242 INFO L471 AbstractCegarLoop]: Abstraction has 1663 states and 2203 transitions. [2024-11-18 09:40:28,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2203 transitions. [2024-11-18 09:40:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-18 09:40:28,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:28,249 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:28,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 09:40:28,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:28,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:28,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1374711229, now seen corresponding path program 1 times [2024-11-18 09:40:28,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:28,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136095621] [2024-11-18 09:40:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:28,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:28,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:28,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136095621] [2024-11-18 09:40:28,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136095621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:28,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:28,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:28,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420681097] [2024-11-18 09:40:28,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:28,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:28,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:28,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:28,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:28,509 INFO L87 Difference]: Start difference. First operand 1663 states and 2203 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:29,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:29,225 INFO L93 Difference]: Finished difference Result 4156 states and 5494 transitions. [2024-11-18 09:40:29,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:29,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2024-11-18 09:40:29,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:29,234 INFO L225 Difference]: With dead ends: 4156 [2024-11-18 09:40:29,235 INFO L226 Difference]: Without dead ends: 2495 [2024-11-18 09:40:29,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:29,239 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 203 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:29,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 57 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:40:29,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2024-11-18 09:40:29,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2492. [2024-11-18 09:40:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2491 states have (on average 1.3167402649538338) internal successors, (3280), 2491 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 09:40:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3280 transitions. [2024-11-18 09:40:29,289 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3280 transitions. Word has length 223 [2024-11-18 09:40:29,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:29,291 INFO L471 AbstractCegarLoop]: Abstraction has 2492 states and 3280 transitions. [2024-11-18 09:40:29,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3280 transitions. [2024-11-18 09:40:29,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-18 09:40:29,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:29,298 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:29,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 09:40:29,298 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:29,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash 816427444, now seen corresponding path program 1 times [2024-11-18 09:40:29,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:29,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078394697] [2024-11-18 09:40:29,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:29,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:29,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:29,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078394697] [2024-11-18 09:40:29,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078394697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:29,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:29,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:29,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868902948] [2024-11-18 09:40:29,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:29,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:40:29,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:40:29,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:29,997 INFO L87 Difference]: Start difference. First operand 2492 states and 3280 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:31,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:31,205 INFO L93 Difference]: Finished difference Result 6979 states and 9220 transitions. [2024-11-18 09:40:31,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:40:31,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2024-11-18 09:40:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:31,223 INFO L225 Difference]: With dead ends: 6979 [2024-11-18 09:40:31,224 INFO L226 Difference]: Without dead ends: 4141 [2024-11-18 09:40:31,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:31,229 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 194 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:31,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 121 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 09:40:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2024-11-18 09:40:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 4140. [2024-11-18 09:40:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4140 states, 4139 states have (on average 1.2974148345010872) internal successors, (5370), 4139 states have internal predecessors, (5370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 5370 transitions. [2024-11-18 09:40:31,317 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 5370 transitions. Word has length 226 [2024-11-18 09:40:31,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:31,317 INFO L471 AbstractCegarLoop]: Abstraction has 4140 states and 5370 transitions. [2024-11-18 09:40:31,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:31,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 5370 transitions. [2024-11-18 09:40:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-18 09:40:31,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:31,327 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:31,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 09:40:31,328 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:31,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash -537077326, now seen corresponding path program 1 times [2024-11-18 09:40:31,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:31,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194416487] [2024-11-18 09:40:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:31,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194416487] [2024-11-18 09:40:31,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194416487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474384490] [2024-11-18 09:40:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:31,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:31,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:31,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:40:31,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:40:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:31,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:40:31,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:40:32,215 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:32,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474384490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:32,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:32,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:40:32,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249626977] [2024-11-18 09:40:32,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:32,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:32,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:32,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:32,218 INFO L87 Difference]: Start difference. First operand 4140 states and 5370 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:32,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:32,932 INFO L93 Difference]: Finished difference Result 12365 states and 16050 transitions. [2024-11-18 09:40:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:32,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 230 [2024-11-18 09:40:32,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:32,963 INFO L225 Difference]: With dead ends: 12365 [2024-11-18 09:40:32,964 INFO L226 Difference]: Without dead ends: 8227 [2024-11-18 09:40:32,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:32,973 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 34 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:32,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 342 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:40:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8227 states. [2024-11-18 09:40:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8227 to 8200. [2024-11-18 09:40:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8199 states have (on average 1.275033540675692) internal successors, (10454), 8199 states have internal predecessors, (10454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 10454 transitions. [2024-11-18 09:40:33,140 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 10454 transitions. Word has length 230 [2024-11-18 09:40:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:33,141 INFO L471 AbstractCegarLoop]: Abstraction has 8200 states and 10454 transitions. [2024-11-18 09:40:33,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 10454 transitions. [2024-11-18 09:40:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-18 09:40:33,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:33,156 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:33,174 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 09:40:33,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:33,357 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:33,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1175832206, now seen corresponding path program 1 times [2024-11-18 09:40:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:33,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652799011] [2024-11-18 09:40:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:40:33,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:33,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652799011] [2024-11-18 09:40:33,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652799011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:33,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009953815] [2024-11-18 09:40:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:33,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:33,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:33,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:40:33,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:40:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:33,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:40:33,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:40:33,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:33,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009953815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:33,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:33,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:40:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822612520] [2024-11-18 09:40:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:33,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:33,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:33,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:33,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:33,965 INFO L87 Difference]: Start difference. First operand 8200 states and 10454 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:34,750 INFO L93 Difference]: Finished difference Result 24118 states and 30781 transitions. [2024-11-18 09:40:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:34,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 236 [2024-11-18 09:40:34,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:34,812 INFO L225 Difference]: With dead ends: 24118 [2024-11-18 09:40:34,812 INFO L226 Difference]: Without dead ends: 15920 [2024-11-18 09:40:34,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:34,827 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 212 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:34,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 342 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:40:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15920 states. [2024-11-18 09:40:35,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15920 to 15508. [2024-11-18 09:40:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15508 states, 15507 states have (on average 1.173018636744696) internal successors, (18190), 15507 states have internal predecessors, (18190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15508 states to 15508 states and 18190 transitions. [2024-11-18 09:40:35,214 INFO L78 Accepts]: Start accepts. Automaton has 15508 states and 18190 transitions. Word has length 236 [2024-11-18 09:40:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:35,215 INFO L471 AbstractCegarLoop]: Abstraction has 15508 states and 18190 transitions. [2024-11-18 09:40:35,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 15508 states and 18190 transitions. [2024-11-18 09:40:35,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 09:40:35,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:35,242 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:35,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:40:35,443 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,SelfDestructingSolverStorable7 [2024-11-18 09:40:35,444 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:35,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:35,445 INFO L85 PathProgramCache]: Analyzing trace with hash -85191137, now seen corresponding path program 1 times [2024-11-18 09:40:35,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:35,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537832600] [2024-11-18 09:40:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:35,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:35,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:35,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537832600] [2024-11-18 09:40:35,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537832600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:35,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336140613] [2024-11-18 09:40:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:35,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:35,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:35,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:40:35,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:40:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:36,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:40:36,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:40:36,360 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:36,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336140613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:36,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:36,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:40:36,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371473567] [2024-11-18 09:40:36,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:36,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:36,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:36,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:36,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:36,362 INFO L87 Difference]: Start difference. First operand 15508 states and 18190 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:37,098 INFO L93 Difference]: Finished difference Result 31020 states and 36388 transitions. [2024-11-18 09:40:37,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:37,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2024-11-18 09:40:37,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:37,127 INFO L225 Difference]: With dead ends: 31020 [2024-11-18 09:40:37,127 INFO L226 Difference]: Without dead ends: 15514 [2024-11-18 09:40:37,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:37,145 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 73 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:37,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 47 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:40:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15514 states. [2024-11-18 09:40:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15514 to 15508. [2024-11-18 09:40:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15508 states, 15507 states have (on average 1.1710840265686464) internal successors, (18160), 15507 states have internal predecessors, (18160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15508 states to 15508 states and 18160 transitions. [2024-11-18 09:40:37,448 INFO L78 Accepts]: Start accepts. Automaton has 15508 states and 18160 transitions. Word has length 243 [2024-11-18 09:40:37,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:37,449 INFO L471 AbstractCegarLoop]: Abstraction has 15508 states and 18160 transitions. [2024-11-18 09:40:37,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 15508 states and 18160 transitions. [2024-11-18 09:40:37,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 09:40:37,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:37,486 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:37,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:40:37,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:37,687 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:37,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:37,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1257364949, now seen corresponding path program 1 times [2024-11-18 09:40:37,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:37,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360231502] [2024-11-18 09:40:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:37,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360231502] [2024-11-18 09:40:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360231502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:38,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:38,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796856531] [2024-11-18 09:40:38,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:38,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:38,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:38,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:38,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:38,081 INFO L87 Difference]: Start difference. First operand 15508 states and 18160 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:38,824 INFO L93 Difference]: Finished difference Result 38119 states and 45399 transitions. [2024-11-18 09:40:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:38,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 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 277 [2024-11-18 09:40:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:38,863 INFO L225 Difference]: With dead ends: 38119 [2024-11-18 09:40:38,863 INFO L226 Difference]: Without dead ends: 22613 [2024-11-18 09:40:38,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:38,884 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 134 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:38,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 127 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:40:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22613 states. [2024-11-18 09:40:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22613 to 22613. [2024-11-18 09:40:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22613 states, 22612 states have (on average 1.1365204316292234) internal successors, (25699), 22612 states have internal predecessors, (25699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22613 states to 22613 states and 25699 transitions. [2024-11-18 09:40:39,257 INFO L78 Accepts]: Start accepts. Automaton has 22613 states and 25699 transitions. Word has length 277 [2024-11-18 09:40:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:39,257 INFO L471 AbstractCegarLoop]: Abstraction has 22613 states and 25699 transitions. [2024-11-18 09:40:39,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:39,258 INFO L276 IsEmpty]: Start isEmpty. Operand 22613 states and 25699 transitions. [2024-11-18 09:40:39,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-18 09:40:39,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:39,297 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:39,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 09:40:39,297 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:39,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:39,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1284439463, now seen corresponding path program 1 times [2024-11-18 09:40:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:39,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857511738] [2024-11-18 09:40:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-18 09:40:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:39,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857511738] [2024-11-18 09:40:39,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857511738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:39,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180315407] [2024-11-18 09:40:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:39,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:39,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:39,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:40:39,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:40:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:39,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:40:39,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 09:40:40,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:40,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180315407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:40,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:40,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:40:40,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572958221] [2024-11-18 09:40:40,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:40,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:40,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:40,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:40,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:40,039 INFO L87 Difference]: Start difference. First operand 22613 states and 25699 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:40,765 INFO L93 Difference]: Finished difference Result 56822 states and 64874 transitions. [2024-11-18 09:40:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 297 [2024-11-18 09:40:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:40,824 INFO L225 Difference]: With dead ends: 56822 [2024-11-18 09:40:40,824 INFO L226 Difference]: Without dead ends: 34211 [2024-11-18 09:40:40,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:40,851 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 191 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:40,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 349 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:40:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34211 states. [2024-11-18 09:40:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34211 to 33187. [2024-11-18 09:40:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33187 states, 33186 states have (on average 1.1318025673476768) internal successors, (37560), 33186 states have internal predecessors, (37560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33187 states to 33187 states and 37560 transitions. [2024-11-18 09:40:41,478 INFO L78 Accepts]: Start accepts. Automaton has 33187 states and 37560 transitions. Word has length 297 [2024-11-18 09:40:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:41,478 INFO L471 AbstractCegarLoop]: Abstraction has 33187 states and 37560 transitions. [2024-11-18 09:40:41,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 33187 states and 37560 transitions. [2024-11-18 09:40:41,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-18 09:40:41,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:41,515 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:41,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:40:41,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:41,717 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:41,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:41,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1806312096, now seen corresponding path program 1 times [2024-11-18 09:40:41,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:41,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644375652] [2024-11-18 09:40:41,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:41,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-18 09:40:42,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:42,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644375652] [2024-11-18 09:40:42,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644375652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:42,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801390726] [2024-11-18 09:40:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:42,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:42,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:42,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:40:42,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:40:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:42,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:40:42,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-18 09:40:42,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:40:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-18 09:40:43,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801390726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:40:43,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:40:43,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-18 09:40:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124158231] [2024-11-18 09:40:43,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:40:43,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 09:40:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 09:40:43,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:40:43,333 INFO L87 Difference]: Start difference. First operand 33187 states and 37560 transitions. Second operand has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:46,511 INFO L93 Difference]: Finished difference Result 116511 states and 132386 transitions. [2024-11-18 09:40:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 09:40:46,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 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 317 [2024-11-18 09:40:46,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:46,668 INFO L225 Difference]: With dead ends: 116511 [2024-11-18 09:40:46,669 INFO L226 Difference]: Without dead ends: 83326 [2024-11-18 09:40:46,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:40:46,694 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 1453 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2980 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 3631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:46,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 201 Invalid, 3631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2980 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 09:40:46,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83326 states. [2024-11-18 09:40:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83326 to 77143. [2024-11-18 09:40:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77143 states, 77142 states have (on average 1.1216198698504058) internal successors, (86524), 77142 states have internal predecessors, (86524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:47,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77143 states to 77143 states and 86524 transitions. [2024-11-18 09:40:47,935 INFO L78 Accepts]: Start accepts. Automaton has 77143 states and 86524 transitions. Word has length 317 [2024-11-18 09:40:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:47,935 INFO L471 AbstractCegarLoop]: Abstraction has 77143 states and 86524 transitions. [2024-11-18 09:40:47,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 77143 states and 86524 transitions. [2024-11-18 09:40:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-18 09:40:48,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:48,244 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:48,288 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 09:40:48,448 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,SelfDestructingSolverStorable11 [2024-11-18 09:40:48,449 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:48,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1187929926, now seen corresponding path program 1 times [2024-11-18 09:40:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38757274] [2024-11-18 09:40:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:48,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 09:40:48,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:48,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38757274] [2024-11-18 09:40:48,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38757274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:48,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:48,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:48,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965719472] [2024-11-18 09:40:48,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:48,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:48,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:48,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:48,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:48,863 INFO L87 Difference]: Start difference. First operand 77143 states and 86524 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:49,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:49,762 INFO L93 Difference]: Finished difference Result 160032 states and 179298 transitions. [2024-11-18 09:40:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:49,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2024-11-18 09:40:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:49,905 INFO L225 Difference]: With dead ends: 160032 [2024-11-18 09:40:49,906 INFO L226 Difference]: Without dead ends: 82891 [2024-11-18 09:40:49,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:49,971 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 156 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:49,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 105 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:40:50,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82891 states. [2024-11-18 09:40:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82891 to 79579. [2024-11-18 09:40:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79579 states, 79578 states have (on average 1.1179848701902535) internal successors, (88967), 79578 states have internal predecessors, (88967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79579 states to 79579 states and 88967 transitions. [2024-11-18 09:40:51,397 INFO L78 Accepts]: Start accepts. Automaton has 79579 states and 88967 transitions. Word has length 352 [2024-11-18 09:40:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:51,398 INFO L471 AbstractCegarLoop]: Abstraction has 79579 states and 88967 transitions. [2024-11-18 09:40:51,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 79579 states and 88967 transitions. [2024-11-18 09:40:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-18 09:40:51,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:51,448 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:51,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 09:40:51,448 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:51,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash 133244214, now seen corresponding path program 1 times [2024-11-18 09:40:51,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:51,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156547253] [2024-11-18 09:40:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:52,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156547253] [2024-11-18 09:40:52,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156547253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:52,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:52,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:52,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022024964] [2024-11-18 09:40:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:52,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:40:52,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:52,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:40:52,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:52,063 INFO L87 Difference]: Start difference. First operand 79579 states and 88967 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:53,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:53,231 INFO L93 Difference]: Finished difference Result 163485 states and 182583 transitions. [2024-11-18 09:40:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:40:53,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 373 [2024-11-18 09:40:53,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:53,340 INFO L225 Difference]: With dead ends: 163485 [2024-11-18 09:40:53,340 INFO L226 Difference]: Without dead ends: 83908 [2024-11-18 09:40:53,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:53,398 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 393 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:53,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 75 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:40:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83908 states. [2024-11-18 09:40:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83908 to 83840. [2024-11-18 09:40:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83840 states, 83839 states have (on average 1.0938584668233162) internal successors, (91708), 83839 states have internal predecessors, (91708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83840 states to 83840 states and 91708 transitions. [2024-11-18 09:40:54,836 INFO L78 Accepts]: Start accepts. Automaton has 83840 states and 91708 transitions. Word has length 373 [2024-11-18 09:40:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:54,837 INFO L471 AbstractCegarLoop]: Abstraction has 83840 states and 91708 transitions. [2024-11-18 09:40:54,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 83840 states and 91708 transitions. [2024-11-18 09:40:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-18 09:40:54,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:54,873 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:54,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 09:40:54,873 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:54,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1443005177, now seen corresponding path program 1 times [2024-11-18 09:40:54,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427397690] [2024-11-18 09:40:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:54,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 09:40:55,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:55,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427397690] [2024-11-18 09:40:55,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427397690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:55,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:55,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:55,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098894482] [2024-11-18 09:40:55,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:55,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:55,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:55,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:55,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:55,082 INFO L87 Difference]: Start difference. First operand 83840 states and 91708 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:56,119 INFO L93 Difference]: Finished difference Result 161976 states and 176975 transitions. [2024-11-18 09:40:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:56,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 400 [2024-11-18 09:40:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:56,229 INFO L225 Difference]: With dead ends: 161976 [2024-11-18 09:40:56,229 INFO L226 Difference]: Without dead ends: 78138 [2024-11-18 09:40:56,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:56,279 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 214 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:56,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 291 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:40:56,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78138 states. [2024-11-18 09:40:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78138 to 74273. [2024-11-18 09:40:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74273 states, 74272 states have (on average 1.0716555364067213) internal successors, (79594), 74272 states have internal predecessors, (79594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74273 states to 74273 states and 79594 transitions. [2024-11-18 09:40:57,632 INFO L78 Accepts]: Start accepts. Automaton has 74273 states and 79594 transitions. Word has length 400 [2024-11-18 09:40:57,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:57,632 INFO L471 AbstractCegarLoop]: Abstraction has 74273 states and 79594 transitions. [2024-11-18 09:40:57,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:57,633 INFO L276 IsEmpty]: Start isEmpty. Operand 74273 states and 79594 transitions. [2024-11-18 09:40:57,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-18 09:40:57,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:57,683 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:40:57,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 09:40:57,684 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:57,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:57,684 INFO L85 PathProgramCache]: Analyzing trace with hash -464301253, now seen corresponding path program 1 times [2024-11-18 09:40:57,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:57,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4379253] [2024-11-18 09:40:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:57,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:40:58,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:58,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4379253] [2024-11-18 09:40:58,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4379253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:58,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:58,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:58,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783777814] [2024-11-18 09:40:58,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:58,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:58,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:58,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:58,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:58,251 INFO L87 Difference]: Start difference. First operand 74273 states and 79594 transitions. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:59,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:59,273 INFO L93 Difference]: Finished difference Result 153442 states and 164580 transitions. [2024-11-18 09:40:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:59,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2024-11-18 09:40:59,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:59,356 INFO L225 Difference]: With dead ends: 153442 [2024-11-18 09:40:59,356 INFO L226 Difference]: Without dead ends: 79171 [2024-11-18 09:40:59,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:59,401 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 133 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:59,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 327 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:40:59,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79171 states. [2024-11-18 09:41:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79171 to 79161. [2024-11-18 09:41:00,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79161 states, 79160 states have (on average 1.0716649823143) internal successors, (84833), 79160 states have internal predecessors, (84833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79161 states to 79161 states and 84833 transitions. [2024-11-18 09:41:00,451 INFO L78 Accepts]: Start accepts. Automaton has 79161 states and 84833 transitions. Word has length 407 [2024-11-18 09:41:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:00,451 INFO L471 AbstractCegarLoop]: Abstraction has 79161 states and 84833 transitions. [2024-11-18 09:41:00,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 79161 states and 84833 transitions. [2024-11-18 09:41:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-18 09:41:00,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:00,482 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:00,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 09:41:00,483 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:00,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1330620740, now seen corresponding path program 1 times [2024-11-18 09:41:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:00,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208540046] [2024-11-18 09:41:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:00,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-18 09:41:01,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:01,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208540046] [2024-11-18 09:41:01,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208540046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:01,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:01,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:01,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588747930] [2024-11-18 09:41:01,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:01,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:41:01,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:01,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:41:01,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:41:01,098 INFO L87 Difference]: Start difference. First operand 79161 states and 84833 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:02,208 INFO L93 Difference]: Finished difference Result 229236 states and 244980 transitions. [2024-11-18 09:41:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:41:02,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 422 [2024-11-18 09:41:02,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:02,750 INFO L225 Difference]: With dead ends: 229236 [2024-11-18 09:41:02,750 INFO L226 Difference]: Without dead ends: 148859 [2024-11-18 09:41:02,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:41:02,802 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 480 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:02,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 301 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:41:02,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148859 states. [2024-11-18 09:41:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148859 to 126266. [2024-11-18 09:41:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126266 states, 126265 states have (on average 1.0688868649269394) internal successors, (134963), 126265 states have internal predecessors, (134963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126266 states to 126266 states and 134963 transitions. [2024-11-18 09:41:04,817 INFO L78 Accepts]: Start accepts. Automaton has 126266 states and 134963 transitions. Word has length 422 [2024-11-18 09:41:04,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:04,817 INFO L471 AbstractCegarLoop]: Abstraction has 126266 states and 134963 transitions. [2024-11-18 09:41:04,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:04,817 INFO L276 IsEmpty]: Start isEmpty. Operand 126266 states and 134963 transitions. [2024-11-18 09:41:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-18 09:41:04,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:04,850 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:04,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 09:41:04,850 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:04,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:04,851 INFO L85 PathProgramCache]: Analyzing trace with hash 590001762, now seen corresponding path program 1 times [2024-11-18 09:41:04,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:04,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389247440] [2024-11-18 09:41:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:04,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-18 09:41:05,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:05,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389247440] [2024-11-18 09:41:05,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389247440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:05,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:05,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:05,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416076215] [2024-11-18 09:41:05,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:05,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:05,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:05,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:05,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:05,643 INFO L87 Difference]: Start difference. First operand 126266 states and 134963 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:06,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:06,923 INFO L93 Difference]: Finished difference Result 371481 states and 397154 transitions. [2024-11-18 09:41:06,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:06,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 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 422 [2024-11-18 09:41:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:07,274 INFO L225 Difference]: With dead ends: 371481 [2024-11-18 09:41:07,274 INFO L226 Difference]: Without dead ends: 245420 [2024-11-18 09:41:07,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:07,328 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 185 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:07,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 485 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:41:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245420 states. [2024-11-18 09:41:11,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245420 to 242778. [2024-11-18 09:41:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242778 states, 242777 states have (on average 1.0694176136948723) internal successors, (259630), 242777 states have internal predecessors, (259630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242778 states to 242778 states and 259630 transitions. [2024-11-18 09:41:11,632 INFO L78 Accepts]: Start accepts. Automaton has 242778 states and 259630 transitions. Word has length 422 [2024-11-18 09:41:11,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:11,633 INFO L471 AbstractCegarLoop]: Abstraction has 242778 states and 259630 transitions. [2024-11-18 09:41:11,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 242778 states and 259630 transitions. [2024-11-18 09:41:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-18 09:41:11,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:11,680 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:41:11,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 09:41:11,680 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:11,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:11,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1852231082, now seen corresponding path program 1 times [2024-11-18 09:41:11,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:11,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909024856] [2024-11-18 09:41:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:11,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-18 09:41:11,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:11,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909024856] [2024-11-18 09:41:11,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909024856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:11,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:11,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:11,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806385310] [2024-11-18 09:41:11,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:11,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:11,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:11,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:11,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:11,875 INFO L87 Difference]: Start difference. First operand 242778 states and 259630 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:14,733 INFO L93 Difference]: Finished difference Result 469299 states and 502039 transitions. [2024-11-18 09:41:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:14,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 439 [2024-11-18 09:41:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:15,140 INFO L225 Difference]: With dead ends: 469299 [2024-11-18 09:41:15,140 INFO L226 Difference]: Without dead ends: 225508 [2024-11-18 09:41:15,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:15,301 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 226 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:15,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 313 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 09:41:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225508 states. [2024-11-18 09:41:18,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225508 to 217979. [2024-11-18 09:41:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217979 states, 217978 states have (on average 1.0587995118773454) internal successors, (230795), 217978 states have internal predecessors, (230795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217979 states to 217979 states and 230795 transitions. [2024-11-18 09:41:19,527 INFO L78 Accepts]: Start accepts. Automaton has 217979 states and 230795 transitions. Word has length 439 [2024-11-18 09:41:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:19,530 INFO L471 AbstractCegarLoop]: Abstraction has 217979 states and 230795 transitions. [2024-11-18 09:41:19,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 217979 states and 230795 transitions. [2024-11-18 09:41:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-11-18 09:41:19,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:19,672 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:19,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 09:41:19,675 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:19,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:19,676 INFO L85 PathProgramCache]: Analyzing trace with hash 693401767, now seen corresponding path program 1 times [2024-11-18 09:41:19,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:19,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440978527] [2024-11-18 09:41:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:19,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-18 09:41:20,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:20,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440978527] [2024-11-18 09:41:20,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440978527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:20,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:20,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:20,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909192030] [2024-11-18 09:41:20,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:20,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:20,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:20,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:20,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:20,210 INFO L87 Difference]: Start difference. First operand 217979 states and 230795 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:22,148 INFO L93 Difference]: Finished difference Result 455671 states and 482088 transitions. [2024-11-18 09:41:22,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:22,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 598 [2024-11-18 09:41:22,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:22,472 INFO L225 Difference]: With dead ends: 455671 [2024-11-18 09:41:22,472 INFO L226 Difference]: Without dead ends: 237897 [2024-11-18 09:41:22,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:22,610 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 161 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:22,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 323 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237897 states. [2024-11-18 09:41:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237897 to 235640. [2024-11-18 09:41:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235640 states, 235639 states have (on average 1.0547320265321105) internal successors, (248536), 235639 states have internal predecessors, (248536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235640 states to 235640 states and 248536 transitions. [2024-11-18 09:41:26,426 INFO L78 Accepts]: Start accepts. Automaton has 235640 states and 248536 transitions. Word has length 598 [2024-11-18 09:41:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:26,427 INFO L471 AbstractCegarLoop]: Abstraction has 235640 states and 248536 transitions. [2024-11-18 09:41:26,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 235640 states and 248536 transitions. [2024-11-18 09:41:26,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-11-18 09:41:26,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:26,484 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:26,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 09:41:26,484 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:26,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:26,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1239181050, now seen corresponding path program 1 times [2024-11-18 09:41:26,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:26,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466003080] [2024-11-18 09:41:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:26,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms