./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label45.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label45.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 e46cda06cd6f3e72cb5a00e680e37793de7d3fd440c55f6638f7eefc5d4b52af --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:38:34,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:38:34,974 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:38:34,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:38:34,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:38:34,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:38:34,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:38:34,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:38:34,999 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:38:34,999 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:38:34,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:38:35,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:38:35,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:38:35,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:38:35,001 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:38:35,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:38:35,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:38:35,003 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:38:35,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:38:35,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:38:35,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:38:35,004 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:38:35,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:38:35,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:38:35,008 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:38:35,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:38:35,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:38:35,009 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:38:35,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:38:35,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:38:35,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:38:35,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:38:35,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:38:35,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:38:35,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:38:35,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:38:35,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:38:35,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:38:35,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:38:35,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:38:35,010 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:38:35,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:38:35,011 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e46cda06cd6f3e72cb5a00e680e37793de7d3fd440c55f6638f7eefc5d4b52af [2024-10-10 22:38:35,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:38:35,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:38:35,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:38:35,233 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:38:35,234 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:38:35,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label45.c [2024-10-10 22:38:36,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:38:36,817 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:38:36,818 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label45.c [2024-10-10 22:38:36,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1485fa3c0/ef07ab67a79742d6acd0941b001b63af/FLAG7f1628d3a [2024-10-10 22:38:36,850 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1485fa3c0/ef07ab67a79742d6acd0941b001b63af [2024-10-10 22:38:36,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:38:36,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:38:36,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:38:36,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:38:36,868 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:38:36,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:38:36" (1/1) ... [2024-10-10 22:38:36,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac82dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:36, skipping insertion in model container [2024-10-10 22:38:36,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:38:36" (1/1) ... [2024-10-10 22:38:36,927 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:38:37,309 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label45.c[53653,53666] [2024-10-10 22:38:37,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:38:37,383 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:38:37,500 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label45.c[53653,53666] [2024-10-10 22:38:37,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:38:37,530 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:38:37,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37 WrapperNode [2024-10-10 22:38:37,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:38:37,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:38:37,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:38:37,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:38:37,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,632 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-10 22:38:37,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:38:37,633 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:38:37,633 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:38:37,633 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:38:37,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,648 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,687 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-10 22:38:37,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,725 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:38:37,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:38:37,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:38:37,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:38:37,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (1/1) ... [2024-10-10 22:38:37,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:38:37,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:38:37,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:38:37,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:38:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:38:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:38:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:38:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:38:37,882 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:38:37,884 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:38:39,255 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-10 22:38:39,255 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:38:39,308 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:38:39,310 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 22:38:39,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:38:39 BoogieIcfgContainer [2024-10-10 22:38:39,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:38:39,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:38:39,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:38:39,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:38:39,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:38:36" (1/3) ... [2024-10-10 22:38:39,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abc54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:38:39, skipping insertion in model container [2024-10-10 22:38:39,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:38:37" (2/3) ... [2024-10-10 22:38:39,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abc54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:38:39, skipping insertion in model container [2024-10-10 22:38:39,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:38:39" (3/3) ... [2024-10-10 22:38:39,319 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label45.c [2024-10-10 22:38:39,334 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:38:39,335 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:38:39,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:38:39,399 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;@56907ef3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:38:39,399 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:38:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-10 22:38:39,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:39,418 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] [2024-10-10 22:38:39,418 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:39,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1289740576, now seen corresponding path program 1 times [2024-10-10 22:38:39,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:39,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923780672] [2024-10-10 22:38:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:38:40,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:40,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923780672] [2024-10-10 22:38:40,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923780672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:40,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:40,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:38:40,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969986280] [2024-10-10 22:38:40,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:40,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:40,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:40,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:40,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:40,368 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:41,214 INFO L93 Difference]: Finished difference Result 702 states and 1352 transitions. [2024-10-10 22:38:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:41,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2024-10-10 22:38:41,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:41,225 INFO L225 Difference]: With dead ends: 702 [2024-10-10 22:38:41,225 INFO L226 Difference]: Without dead ends: 459 [2024-10-10 22:38:41,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:41,230 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 89 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:41,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 98 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:38:41,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-10-10 22:38:41,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2024-10-10 22:38:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.6162528216704288) internal successors, (716), 443 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 716 transitions. [2024-10-10 22:38:41,283 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 716 transitions. Word has length 143 [2024-10-10 22:38:41,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:41,284 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 716 transitions. [2024-10-10 22:38:41,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:41,284 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 716 transitions. [2024-10-10 22:38:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-10 22:38:41,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:41,287 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-10 22:38:41,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:38:41,287 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:41,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1966173140, now seen corresponding path program 1 times [2024-10-10 22:38:41,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:41,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619714665] [2024-10-10 22:38:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:41,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:38:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:41,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619714665] [2024-10-10 22:38:41,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619714665] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:41,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:41,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:38:41,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951347197] [2024-10-10 22:38:41,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:41,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:41,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:41,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:41,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:41,559 INFO L87 Difference]: Start difference. First operand 444 states and 716 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:42,181 INFO L93 Difference]: Finished difference Result 1323 states and 2137 transitions. [2024-10-10 22:38:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:42,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-10-10 22:38:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:42,185 INFO L225 Difference]: With dead ends: 1323 [2024-10-10 22:38:42,185 INFO L226 Difference]: Without dead ends: 880 [2024-10-10 22:38:42,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:42,189 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:42,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 123 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:38:42,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-10-10 22:38:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 876. [2024-10-10 22:38:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 1.5965714285714285) internal successors, (1397), 875 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1397 transitions. [2024-10-10 22:38:42,220 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1397 transitions. Word has length 149 [2024-10-10 22:38:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:42,221 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1397 transitions. [2024-10-10 22:38:42,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1397 transitions. [2024-10-10 22:38:42,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-10 22:38:42,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:42,224 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-10 22:38:42,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:38:42,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:42,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:42,225 INFO L85 PathProgramCache]: Analyzing trace with hash -90620924, now seen corresponding path program 1 times [2024-10-10 22:38:42,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:42,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39265039] [2024-10-10 22:38:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:42,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:38:42,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:42,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39265039] [2024-10-10 22:38:42,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39265039] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:42,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:42,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:38:42,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705903101] [2024-10-10 22:38:42,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:42,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:42,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:42,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:42,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:42,456 INFO L87 Difference]: Start difference. First operand 876 states and 1397 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:43,061 INFO L93 Difference]: Finished difference Result 2564 states and 4100 transitions. [2024-10-10 22:38:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:43,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-10-10 22:38:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:43,066 INFO L225 Difference]: With dead ends: 2564 [2024-10-10 22:38:43,067 INFO L226 Difference]: Without dead ends: 1689 [2024-10-10 22:38:43,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:43,069 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:43,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 190 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:38:43,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2024-10-10 22:38:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1689. [2024-10-10 22:38:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1688 states have (on average 1.386255924170616) internal successors, (2340), 1688 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2340 transitions. [2024-10-10 22:38:43,094 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2340 transitions. Word has length 149 [2024-10-10 22:38:43,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:43,094 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2340 transitions. [2024-10-10 22:38:43,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:43,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2340 transitions. [2024-10-10 22:38:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-10 22:38:43,097 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:43,097 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-10 22:38:43,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:38:43,097 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:43,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:43,098 INFO L85 PathProgramCache]: Analyzing trace with hash 58922037, now seen corresponding path program 1 times [2024-10-10 22:38:43,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:43,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104684085] [2024-10-10 22:38:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:43,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:38:43,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:43,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104684085] [2024-10-10 22:38:43,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104684085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:43,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:43,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:38:43,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918118411] [2024-10-10 22:38:43,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:43,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:43,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:43,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:43,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:43,328 INFO L87 Difference]: Start difference. First operand 1689 states and 2340 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:43,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:43,972 INFO L93 Difference]: Finished difference Result 5047 states and 6997 transitions. [2024-10-10 22:38:43,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:43,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2024-10-10 22:38:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:43,981 INFO L225 Difference]: With dead ends: 5047 [2024-10-10 22:38:43,981 INFO L226 Difference]: Without dead ends: 3359 [2024-10-10 22:38:43,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:43,986 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:43,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 204 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:38:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2024-10-10 22:38:44,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 3350. [2024-10-10 22:38:44,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3349 states have (on average 1.3723499552105105) internal successors, (4596), 3349 states have internal predecessors, (4596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 4596 transitions. [2024-10-10 22:38:44,066 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 4596 transitions. Word has length 155 [2024-10-10 22:38:44,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:44,066 INFO L471 AbstractCegarLoop]: Abstraction has 3350 states and 4596 transitions. [2024-10-10 22:38:44,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 4596 transitions. [2024-10-10 22:38:44,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-10-10 22:38:44,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:44,072 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:38:44,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 22:38:44,072 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:44,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1902093685, now seen corresponding path program 1 times [2024-10-10 22:38:44,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:44,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871176086] [2024-10-10 22:38:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:44,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:38:44,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:44,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871176086] [2024-10-10 22:38:44,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871176086] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:44,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:44,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:38:44,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845737363] [2024-10-10 22:38:44,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:44,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:44,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:44,205 INFO L87 Difference]: Start difference. First operand 3350 states and 4596 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:44,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:44,867 INFO L93 Difference]: Finished difference Result 9991 states and 13722 transitions. [2024-10-10 22:38:44,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:44,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 157 [2024-10-10 22:38:44,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:44,886 INFO L225 Difference]: With dead ends: 9991 [2024-10-10 22:38:44,886 INFO L226 Difference]: Without dead ends: 6642 [2024-10-10 22:38:44,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:44,894 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:44,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:38:44,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6642 states. [2024-10-10 22:38:44,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6642 to 6604. [2024-10-10 22:38:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6604 states, 6603 states have (on average 1.3452975920036347) internal successors, (8883), 6603 states have internal predecessors, (8883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6604 states to 6604 states and 8883 transitions. [2024-10-10 22:38:45,005 INFO L78 Accepts]: Start accepts. Automaton has 6604 states and 8883 transitions. Word has length 157 [2024-10-10 22:38:45,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:45,006 INFO L471 AbstractCegarLoop]: Abstraction has 6604 states and 8883 transitions. [2024-10-10 22:38:45,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:45,007 INFO L276 IsEmpty]: Start isEmpty. Operand 6604 states and 8883 transitions. [2024-10-10 22:38:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-10 22:38:45,014 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:45,014 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2024-10-10 22:38:45,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 22:38:45,015 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:45,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:45,016 INFO L85 PathProgramCache]: Analyzing trace with hash -389768011, now seen corresponding path program 1 times [2024-10-10 22:38:45,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:45,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407540142] [2024-10-10 22:38:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:45,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-10 22:38:45,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:45,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407540142] [2024-10-10 22:38:45,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407540142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:45,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:45,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:38:45,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858808625] [2024-10-10 22:38:45,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:45,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:45,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:45,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:45,259 INFO L87 Difference]: Start difference. First operand 6604 states and 8883 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:45,986 INFO L93 Difference]: Finished difference Result 17694 states and 24238 transitions. [2024-10-10 22:38:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2024-10-10 22:38:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:46,012 INFO L225 Difference]: With dead ends: 17694 [2024-10-10 22:38:46,012 INFO L226 Difference]: Without dead ends: 11091 [2024-10-10 22:38:46,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:46,018 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 216 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:46,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 361 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:38:46,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11091 states. [2024-10-10 22:38:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11091 to 11081. [2024-10-10 22:38:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11081 states, 11080 states have (on average 1.2974729241877256) internal successors, (14376), 11080 states have internal predecessors, (14376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11081 states to 11081 states and 14376 transitions. [2024-10-10 22:38:46,173 INFO L78 Accepts]: Start accepts. Automaton has 11081 states and 14376 transitions. Word has length 171 [2024-10-10 22:38:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:46,174 INFO L471 AbstractCegarLoop]: Abstraction has 11081 states and 14376 transitions. [2024-10-10 22:38:46,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11081 states and 14376 transitions. [2024-10-10 22:38:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-10 22:38:46,185 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:46,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:38:46,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 22:38:46,186 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:46,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1101680528, now seen corresponding path program 1 times [2024-10-10 22:38:46,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:46,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821148030] [2024-10-10 22:38:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:46,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:38:46,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:46,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821148030] [2024-10-10 22:38:46,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821148030] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:38:46,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468700124] [2024-10-10 22:38:46,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:46,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:38:46,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:38:46,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:38:46,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:38:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:46,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:38:46,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:38:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:38:46,686 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:38:46,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468700124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:46,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:38:46,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-10 22:38:46,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888344486] [2024-10-10 22:38:46,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:46,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:46,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:46,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:46,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:38:46,690 INFO L87 Difference]: Start difference. First operand 11081 states and 14376 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:47,476 INFO L93 Difference]: Finished difference Result 31945 states and 41598 transitions. [2024-10-10 22:38:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:47,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-10-10 22:38:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:47,520 INFO L225 Difference]: With dead ends: 31945 [2024-10-10 22:38:47,520 INFO L226 Difference]: Without dead ends: 20865 [2024-10-10 22:38:47,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:38:47,533 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 230 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:47,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 204 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:38:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20865 states. [2024-10-10 22:38:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20865 to 20861. [2024-10-10 22:38:47,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20861 states, 20860 states have (on average 1.2680249280920421) internal successors, (26451), 20860 states have internal predecessors, (26451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:47,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20861 states to 20861 states and 26451 transitions. [2024-10-10 22:38:47,865 INFO L78 Accepts]: Start accepts. Automaton has 20861 states and 26451 transitions. Word has length 180 [2024-10-10 22:38:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:47,866 INFO L471 AbstractCegarLoop]: Abstraction has 20861 states and 26451 transitions. [2024-10-10 22:38:47,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:47,866 INFO L276 IsEmpty]: Start isEmpty. Operand 20861 states and 26451 transitions. [2024-10-10 22:38:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-10 22:38:47,885 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:47,885 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:38:47,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 22:38:48,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:38:48,086 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:48,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash -537240049, now seen corresponding path program 1 times [2024-10-10 22:38:48,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:48,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646662829] [2024-10-10 22:38:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:48,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-10 22:38:48,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:48,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646662829] [2024-10-10 22:38:48,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646662829] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:48,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:48,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:38:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171993730] [2024-10-10 22:38:48,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:48,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:48,341 INFO L87 Difference]: Start difference. First operand 20861 states and 26451 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:49,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:49,094 INFO L93 Difference]: Finished difference Result 48863 states and 62099 transitions. [2024-10-10 22:38:49,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:49,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2024-10-10 22:38:49,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:49,143 INFO L225 Difference]: With dead ends: 48863 [2024-10-10 22:38:49,143 INFO L226 Difference]: Without dead ends: 28003 [2024-10-10 22:38:49,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:49,170 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 214 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:49,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 358 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:38:49,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28003 states. [2024-10-10 22:38:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28003 to 27968. [2024-10-10 22:38:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27968 states, 27967 states have (on average 1.225444273608181) internal successors, (34272), 27967 states have internal predecessors, (34272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27968 states to 27968 states and 34272 transitions. [2024-10-10 22:38:49,614 INFO L78 Accepts]: Start accepts. Automaton has 27968 states and 34272 transitions. Word has length 184 [2024-10-10 22:38:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:49,614 INFO L471 AbstractCegarLoop]: Abstraction has 27968 states and 34272 transitions. [2024-10-10 22:38:49,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 27968 states and 34272 transitions. [2024-10-10 22:38:49,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-10-10 22:38:49,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:49,635 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:38:49,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-10 22:38:49,636 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:49,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:49,636 INFO L85 PathProgramCache]: Analyzing trace with hash -780300379, now seen corresponding path program 1 times [2024-10-10 22:38:49,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:49,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774464713] [2024-10-10 22:38:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:49,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:38:49,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774464713] [2024-10-10 22:38:49,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774464713] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:49,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:49,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:38:49,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013356571] [2024-10-10 22:38:49,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:49,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:38:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:49,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:38:49,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:38:49,905 INFO L87 Difference]: Start difference. First operand 27968 states and 34272 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:50,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:50,662 INFO L93 Difference]: Finished difference Result 50147 states and 61193 transitions. [2024-10-10 22:38:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:38:50,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 199 [2024-10-10 22:38:50,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:50,691 INFO L225 Difference]: With dead ends: 50147 [2024-10-10 22:38:50,691 INFO L226 Difference]: Without dead ends: 22383 [2024-10-10 22:38:50,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:38:50,717 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 463 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:50,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 51 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:38:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22383 states. [2024-10-10 22:38:50,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22383 to 22383. [2024-10-10 22:38:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22383 states, 22382 states have (on average 1.1557948351353766) internal successors, (25869), 22382 states have internal predecessors, (25869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22383 states to 22383 states and 25869 transitions. [2024-10-10 22:38:51,050 INFO L78 Accepts]: Start accepts. Automaton has 22383 states and 25869 transitions. Word has length 199 [2024-10-10 22:38:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:51,050 INFO L471 AbstractCegarLoop]: Abstraction has 22383 states and 25869 transitions. [2024-10-10 22:38:51,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22383 states and 25869 transitions. [2024-10-10 22:38:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-10 22:38:51,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:51,072 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, 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] [2024-10-10 22:38:51,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 22:38:51,072 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:51,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:51,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1536692109, now seen corresponding path program 1 times [2024-10-10 22:38:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:51,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057257812] [2024-10-10 22:38:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:51,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-10 22:38:51,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057257812] [2024-10-10 22:38:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057257812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:51,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:51,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:38:51,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247149352] [2024-10-10 22:38:51,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:51,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:51,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:51,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:51,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:51,481 INFO L87 Difference]: Start difference. First operand 22383 states and 25869 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:52,315 INFO L93 Difference]: Finished difference Result 55755 states and 64724 transitions. [2024-10-10 22:38:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2024-10-10 22:38:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:52,355 INFO L225 Difference]: With dead ends: 55755 [2024-10-10 22:38:52,355 INFO L226 Difference]: Without dead ends: 33576 [2024-10-10 22:38:52,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:52,370 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 208 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:52,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 98 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:38:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33576 states. [2024-10-10 22:38:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33576 to 32955. [2024-10-10 22:38:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32955 states, 32954 states have (on average 1.151453541299994) internal successors, (37945), 32954 states have internal predecessors, (37945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32955 states to 32955 states and 37945 transitions. [2024-10-10 22:38:52,691 INFO L78 Accepts]: Start accepts. Automaton has 32955 states and 37945 transitions. Word has length 212 [2024-10-10 22:38:52,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:52,691 INFO L471 AbstractCegarLoop]: Abstraction has 32955 states and 37945 transitions. [2024-10-10 22:38:52,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:52,691 INFO L276 IsEmpty]: Start isEmpty. Operand 32955 states and 37945 transitions. [2024-10-10 22:38:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-10-10 22:38:52,711 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:52,711 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 22:38:52,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 22:38:52,711 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:52,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:52,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1570635588, now seen corresponding path program 1 times [2024-10-10 22:38:52,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:52,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125202703] [2024-10-10 22:38:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:52,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-10 22:38:52,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:52,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125202703] [2024-10-10 22:38:52,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125202703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:52,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:52,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:38:52,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510103709] [2024-10-10 22:38:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:52,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:38:52,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:38:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:38:52,917 INFO L87 Difference]: Start difference. First operand 32955 states and 37945 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:53,886 INFO L93 Difference]: Finished difference Result 95626 states and 110909 transitions. [2024-10-10 22:38:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:38:53,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 229 [2024-10-10 22:38:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:53,963 INFO L225 Difference]: With dead ends: 95626 [2024-10-10 22:38:53,963 INFO L226 Difference]: Without dead ends: 63078 [2024-10-10 22:38:53,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:38:53,998 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 557 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:53,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 468 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:38:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63078 states. [2024-10-10 22:38:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63078 to 50458. [2024-10-10 22:38:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50458 states, 50457 states have (on average 1.1502071070416393) internal successors, (58036), 50457 states have internal predecessors, (58036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50458 states to 50458 states and 58036 transitions. [2024-10-10 22:38:54,795 INFO L78 Accepts]: Start accepts. Automaton has 50458 states and 58036 transitions. Word has length 229 [2024-10-10 22:38:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:54,795 INFO L471 AbstractCegarLoop]: Abstraction has 50458 states and 58036 transitions. [2024-10-10 22:38:54,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:54,795 INFO L276 IsEmpty]: Start isEmpty. Operand 50458 states and 58036 transitions. [2024-10-10 22:38:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-10-10 22:38:54,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:54,818 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 22:38:54,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-10 22:38:54,818 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:54,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:54,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1872672794, now seen corresponding path program 1 times [2024-10-10 22:38:54,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:54,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031153886] [2024-10-10 22:38:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:54,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-10 22:38:55,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:55,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031153886] [2024-10-10 22:38:55,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031153886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:55,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:55,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:38:55,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404345226] [2024-10-10 22:38:55,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:55,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:55,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:55,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:55,294 INFO L87 Difference]: Start difference. First operand 50458 states and 58036 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:56,315 INFO L93 Difference]: Finished difference Result 134480 states and 155083 transitions. [2024-10-10 22:38:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:56,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 294 [2024-10-10 22:38:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:56,421 INFO L225 Difference]: With dead ends: 134480 [2024-10-10 22:38:56,421 INFO L226 Difference]: Without dead ends: 84226 [2024-10-10 22:38:56,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:56,462 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 215 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:56,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 120 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:38:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84226 states. [2024-10-10 22:38:57,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84226 to 84219. [2024-10-10 22:38:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84219 states, 84218 states have (on average 1.1496829656367997) internal successors, (96824), 84218 states have internal predecessors, (96824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84219 states to 84219 states and 96824 transitions. [2024-10-10 22:38:57,500 INFO L78 Accepts]: Start accepts. Automaton has 84219 states and 96824 transitions. Word has length 294 [2024-10-10 22:38:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:38:57,500 INFO L471 AbstractCegarLoop]: Abstraction has 84219 states and 96824 transitions. [2024-10-10 22:38:57,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 84219 states and 96824 transitions. [2024-10-10 22:38:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-10-10 22:38:57,754 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:38:57,754 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, 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] [2024-10-10 22:38:57,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-10 22:38:57,755 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:38:57,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:38:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash -556621950, now seen corresponding path program 1 times [2024-10-10 22:38:57,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:38:57,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500658467] [2024-10-10 22:38:57,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:38:57,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:38:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:38:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-10 22:38:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:38:58,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500658467] [2024-10-10 22:38:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500658467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:38:58,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:38:58,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:38:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820450955] [2024-10-10 22:38:58,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:38:58,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:38:58,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:38:58,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:38:58,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:58,325 INFO L87 Difference]: Start difference. First operand 84219 states and 96824 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:38:59,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:38:59,461 INFO L93 Difference]: Finished difference Result 188745 states and 216986 transitions. [2024-10-10 22:38:59,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:38:59,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 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 318 [2024-10-10 22:38:59,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:38:59,604 INFO L225 Difference]: With dead ends: 188745 [2024-10-10 22:38:59,604 INFO L226 Difference]: Without dead ends: 104730 [2024-10-10 22:38:59,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:38:59,646 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 164 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:38:59,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 137 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:38:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104730 states. [2024-10-10 22:39:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104730 to 104524. [2024-10-10 22:39:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104524 states, 104523 states have (on average 1.1397587133932245) internal successors, (119131), 104523 states have internal predecessors, (119131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104524 states to 104524 states and 119131 transitions. [2024-10-10 22:39:01,193 INFO L78 Accepts]: Start accepts. Automaton has 104524 states and 119131 transitions. Word has length 318 [2024-10-10 22:39:01,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:01,194 INFO L471 AbstractCegarLoop]: Abstraction has 104524 states and 119131 transitions. [2024-10-10 22:39:01,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:01,194 INFO L276 IsEmpty]: Start isEmpty. Operand 104524 states and 119131 transitions. [2024-10-10 22:39:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-10-10 22:39:01,234 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:01,234 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 22:39:01,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-10 22:39:01,234 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:01,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1098053941, now seen corresponding path program 1 times [2024-10-10 22:39:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:01,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527766344] [2024-10-10 22:39:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:01,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:01,817 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-10-10 22:39:01,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:01,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527766344] [2024-10-10 22:39:01,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527766344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:01,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:01,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:39:01,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796001928] [2024-10-10 22:39:01,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:01,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:01,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:01,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:01,820 INFO L87 Difference]: Start difference. First operand 104524 states and 119131 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:02,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:02,788 INFO L93 Difference]: Finished difference Result 212902 states and 242381 transitions. [2024-10-10 22:39:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:02,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 332 [2024-10-10 22:39:02,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:02,936 INFO L225 Difference]: With dead ends: 212902 [2024-10-10 22:39:02,936 INFO L226 Difference]: Without dead ends: 108582 [2024-10-10 22:39:03,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:03,009 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 167 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:03,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 348 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:39:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108582 states. [2024-10-10 22:39:04,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108582 to 107770. [2024-10-10 22:39:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107770 states, 107769 states have (on average 1.128970297580937) internal successors, (121668), 107769 states have internal predecessors, (121668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107770 states to 107770 states and 121668 transitions. [2024-10-10 22:39:04,682 INFO L78 Accepts]: Start accepts. Automaton has 107770 states and 121668 transitions. Word has length 332 [2024-10-10 22:39:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:04,683 INFO L471 AbstractCegarLoop]: Abstraction has 107770 states and 121668 transitions. [2024-10-10 22:39:04,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 107770 states and 121668 transitions. [2024-10-10 22:39:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-10-10 22:39:05,008 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:05,009 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:05,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-10 22:39:05,010 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:05,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash -45014881, now seen corresponding path program 1 times [2024-10-10 22:39:05,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:05,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007449713] [2024-10-10 22:39:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:05,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-10-10 22:39:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007449713] [2024-10-10 22:39:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007449713] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:05,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:05,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:39:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798595332] [2024-10-10 22:39:05,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:05,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:39:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:39:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:39:05,345 INFO L87 Difference]: Start difference. First operand 107770 states and 121668 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:06,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:06,757 INFO L93 Difference]: Finished difference Result 235930 states and 266867 transitions. [2024-10-10 22:39:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:39:06,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 348 [2024-10-10 22:39:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:06,911 INFO L225 Difference]: With dead ends: 235930 [2024-10-10 22:39:06,912 INFO L226 Difference]: Without dead ends: 128364 [2024-10-10 22:39:06,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:39:06,986 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 336 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:06,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 84 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:39:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128364 states. [2024-10-10 22:39:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128364 to 117950. [2024-10-10 22:39:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117950 states, 117949 states have (on average 1.1293949079686982) internal successors, (133211), 117949 states have internal predecessors, (133211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117950 states to 117950 states and 133211 transitions. [2024-10-10 22:39:08,890 INFO L78 Accepts]: Start accepts. Automaton has 117950 states and 133211 transitions. Word has length 348 [2024-10-10 22:39:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:08,891 INFO L471 AbstractCegarLoop]: Abstraction has 117950 states and 133211 transitions. [2024-10-10 22:39:08,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 117950 states and 133211 transitions. [2024-10-10 22:39:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-10-10 22:39:08,942 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:08,942 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:08,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-10 22:39:08,943 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:08,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:08,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1121821126, now seen corresponding path program 1 times [2024-10-10 22:39:08,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:08,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677074859] [2024-10-10 22:39:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:08,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-10-10 22:39:09,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:09,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677074859] [2024-10-10 22:39:09,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677074859] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:09,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:09,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:09,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494985842] [2024-10-10 22:39:09,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:09,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:09,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:09,667 INFO L87 Difference]: Start difference. First operand 117950 states and 133211 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:10,864 INFO L93 Difference]: Finished difference Result 269652 states and 304798 transitions. [2024-10-10 22:39:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:10,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2024-10-10 22:39:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:11,089 INFO L225 Difference]: With dead ends: 269652 [2024-10-10 22:39:11,090 INFO L226 Difference]: Without dead ends: 151906 [2024-10-10 22:39:11,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:11,174 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 218 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:11,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 108 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:39:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151906 states. [2024-10-10 22:39:13,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151906 to 151903. [2024-10-10 22:39:13,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151903 states, 151902 states have (on average 1.1306895235085779) internal successors, (171754), 151902 states have internal predecessors, (171754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151903 states to 151903 states and 171754 transitions. [2024-10-10 22:39:13,429 INFO L78 Accepts]: Start accepts. Automaton has 151903 states and 171754 transitions. Word has length 355 [2024-10-10 22:39:13,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:13,430 INFO L471 AbstractCegarLoop]: Abstraction has 151903 states and 171754 transitions. [2024-10-10 22:39:13,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:13,430 INFO L276 IsEmpty]: Start isEmpty. Operand 151903 states and 171754 transitions. [2024-10-10 22:39:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-10-10 22:39:13,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:13,487 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:13,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-10 22:39:13,487 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:13,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 738666736, now seen corresponding path program 1 times [2024-10-10 22:39:13,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:13,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500271561] [2024-10-10 22:39:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:13,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-10 22:39:14,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:14,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500271561] [2024-10-10 22:39:14,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500271561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:14,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:14,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:14,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076648276] [2024-10-10 22:39:14,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:14,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:14,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:14,194 INFO L87 Difference]: Start difference. First operand 151903 states and 171754 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:15,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:15,553 INFO L93 Difference]: Finished difference Result 352216 states and 398494 transitions. [2024-10-10 22:39:15,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:15,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 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 368 [2024-10-10 22:39:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:15,811 INFO L225 Difference]: With dead ends: 352216 [2024-10-10 22:39:15,811 INFO L226 Difference]: Without dead ends: 200517 [2024-10-10 22:39:15,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:15,888 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 208 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:15,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 149 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:39:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200517 states. [2024-10-10 22:39:18,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200517 to 200514. [2024-10-10 22:39:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200514 states, 200513 states have (on average 1.1298718786313107) internal successors, (226554), 200513 states have internal predecessors, (226554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200514 states to 200514 states and 226554 transitions. [2024-10-10 22:39:19,414 INFO L78 Accepts]: Start accepts. Automaton has 200514 states and 226554 transitions. Word has length 368 [2024-10-10 22:39:19,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:19,414 INFO L471 AbstractCegarLoop]: Abstraction has 200514 states and 226554 transitions. [2024-10-10 22:39:19,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:19,415 INFO L276 IsEmpty]: Start isEmpty. Operand 200514 states and 226554 transitions. [2024-10-10 22:39:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-10-10 22:39:19,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:19,486 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 22:39:19,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-10 22:39:19,486 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:19,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash 388287009, now seen corresponding path program 1 times [2024-10-10 22:39:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:19,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909554047] [2024-10-10 22:39:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:19,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 171 proven. 6 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-10 22:39:19,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:19,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909554047] [2024-10-10 22:39:19,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909554047] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:19,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196272398] [2024-10-10 22:39:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:19,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:19,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:19,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:39:19,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:39:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:19,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:39:19,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-10 22:39:20,065 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:20,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196272398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:20,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:20,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 22:39:20,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221326190] [2024-10-10 22:39:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:20,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:20,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:20,067 INFO L87 Difference]: Start difference. First operand 200514 states and 226554 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 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) [2024-10-10 22:39:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:21,757 INFO L93 Difference]: Finished difference Result 394387 states and 445593 transitions. [2024-10-10 22:39:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:21,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 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 375 [2024-10-10 22:39:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:22,401 INFO L225 Difference]: With dead ends: 394387 [2024-10-10 22:39:22,401 INFO L226 Difference]: Without dead ends: 194280 [2024-10-10 22:39:22,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:22,522 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 173 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:22,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 350 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:39:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194280 states. [2024-10-10 22:39:25,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194280 to 194018. [2024-10-10 22:39:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194018 states, 194017 states have (on average 1.1238602802847173) internal successors, (218048), 194017 states have internal predecessors, (218048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194018 states to 194018 states and 218048 transitions. [2024-10-10 22:39:25,439 INFO L78 Accepts]: Start accepts. Automaton has 194018 states and 218048 transitions. Word has length 375 [2024-10-10 22:39:25,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:25,439 INFO L471 AbstractCegarLoop]: Abstraction has 194018 states and 218048 transitions. [2024-10-10 22:39:25,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 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) [2024-10-10 22:39:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 194018 states and 218048 transitions. [2024-10-10 22:39:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-10-10 22:39:25,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:25,535 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:25,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 22:39:25,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-10 22:39:25,736 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:25,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:25,736 INFO L85 PathProgramCache]: Analyzing trace with hash -2035981106, now seen corresponding path program 1 times [2024-10-10 22:39:25,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:25,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044885075] [2024-10-10 22:39:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:25,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-10 22:39:26,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:26,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044885075] [2024-10-10 22:39:26,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044885075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:26,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:26,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:26,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388106453] [2024-10-10 22:39:26,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:26,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:26,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:26,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:26,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:26,570 INFO L87 Difference]: Start difference. First operand 194018 states and 218048 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:28,227 INFO L93 Difference]: Finished difference Result 393541 states and 442380 transitions. [2024-10-10 22:39:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 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 391 [2024-10-10 22:39:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:28,551 INFO L225 Difference]: With dead ends: 393541 [2024-10-10 22:39:28,551 INFO L226 Difference]: Without dead ends: 214376 [2024-10-10 22:39:28,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:28,674 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 98 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:28,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 158 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:39:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214376 states.