./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f135ddf41791de61b2d6990344a7ec64104348ebc3877909c56fd71d04c40aca --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:51:50,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:51:50,096 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:51:50,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:51:50,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:51:50,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:51:50,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:51:50,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:51:50,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:51:50,135 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:51:50,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:51:50,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:51:50,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:51:50,136 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:51:50,136 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:51:50,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:51:50,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:51:50,137 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:51:50,137 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:51:50,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:51:50,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:51:50,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:51:50,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:51:50,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:51:50,139 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:51:50,139 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:51:50,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:51:50,140 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:51:50,140 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:51:50,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:51:50,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:51:50,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:51:50,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:51:50,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:51:50,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:51:50,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:51:50,142 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:51:50,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:51:50,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:51:50,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:51:50,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:51:50,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:51:50,144 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f135ddf41791de61b2d6990344a7ec64104348ebc3877909c56fd71d04c40aca [2024-11-09 19:51:50,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:51:50,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:51:50,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:51:50,442 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:51:50,442 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:51:50,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label20.c [2024-11-09 19:51:51,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:51:52,260 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:51:52,261 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label20.c [2024-11-09 19:51:52,291 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a47042123/7e9e36fa95784751a056e46457953010/FLAGba362bf8a [2024-11-09 19:51:52,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a47042123/7e9e36fa95784751a056e46457953010 [2024-11-09 19:51:52,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:51:52,310 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:51:52,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:51:52,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:51:52,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:51:52,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:51:52" (1/1) ... [2024-11-09 19:51:52,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fd5ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:52, skipping insertion in model container [2024-11-09 19:51:52,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:51:52" (1/1) ... [2024-11-09 19:51:52,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:51:52,622 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label20.c[4104,4117] [2024-11-09 19:51:53,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:51:53,124 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:51:53,144 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label20.c[4104,4117] [2024-11-09 19:51:53,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:51:53,429 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:51:53,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53 WrapperNode [2024-11-09 19:51:53,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:51:53,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:51:53,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:51:53,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:51:53,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:53,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:53,741 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:51:53,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:51:53,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:51:53,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:51:53,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:51:53,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:53,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:53,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:53,984 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:51:53,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:53,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:54,131 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:54,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:54,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:54,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:54,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:51:54,205 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:51:54,205 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:51:54,205 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:51:54,206 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (1/1) ... [2024-11-09 19:51:54,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:51:54,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:51:54,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:51:54,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:51:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:51:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:51:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:51:54,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:51:54,371 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:51:54,374 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:51:58,497 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:51:58,677 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:51:58,678 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:51:58,714 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:51:58,714 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:51:58,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:51:58 BoogieIcfgContainer [2024-11-09 19:51:58,715 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:51:58,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:51:58,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:51:58,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:51:58,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:51:52" (1/3) ... [2024-11-09 19:51:58,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3698fd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:51:58, skipping insertion in model container [2024-11-09 19:51:58,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:53" (2/3) ... [2024-11-09 19:51:58,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3698fd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:51:58, skipping insertion in model container [2024-11-09 19:51:58,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:51:58" (3/3) ... [2024-11-09 19:51:58,725 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label20.c [2024-11-09 19:51:58,740 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:51:58,741 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:51:58,832 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:51:58,840 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;@6c60baa5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:51:58,840 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:51:58,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:58,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 19:51:58,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:58,857 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:58,858 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:58,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:58,864 INFO L85 PathProgramCache]: Analyzing trace with hash 344400666, now seen corresponding path program 1 times [2024-11-09 19:51:58,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:58,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276829613] [2024-11-09 19:51:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:58,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:59,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:59,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276829613] [2024-11-09 19:51:59,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276829613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:59,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:59,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655536270] [2024-11-09 19:51:59,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:59,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:59,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:59,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:59,223 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 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 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:02,192 INFO L93 Difference]: Finished difference Result 1650 states and 4109 transitions. [2024-11-09 19:52:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:02,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-09 19:52:02,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:02,211 INFO L225 Difference]: With dead ends: 1650 [2024-11-09 19:52:02,212 INFO L226 Difference]: Without dead ends: 980 [2024-11-09 19:52:02,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:02,222 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 820 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:02,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 506 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:52:02,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-09 19:52:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 974. [2024-11-09 19:52:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 2.287769784172662) internal successors, (2226), 973 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 2226 transitions. [2024-11-09 19:52:02,306 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 2226 transitions. Word has length 28 [2024-11-09 19:52:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:02,306 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 2226 transitions. [2024-11-09 19:52:02,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 2226 transitions. [2024-11-09 19:52:02,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 19:52:02,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:02,310 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:02,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:52:02,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:02,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:02,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1220866563, now seen corresponding path program 1 times [2024-11-09 19:52:02,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:02,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263989721] [2024-11-09 19:52:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:02,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:02,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263989721] [2024-11-09 19:52:02,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263989721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:02,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:02,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:52:02,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039589565] [2024-11-09 19:52:02,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:02,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:02,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:02,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:02,586 INFO L87 Difference]: Start difference. First operand 974 states and 2226 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:05,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:05,430 INFO L93 Difference]: Finished difference Result 2821 states and 6537 transitions. [2024-11-09 19:52:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:05,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-11-09 19:52:05,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:05,440 INFO L225 Difference]: With dead ends: 2821 [2024-11-09 19:52:05,440 INFO L226 Difference]: Without dead ends: 1849 [2024-11-09 19:52:05,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:05,444 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 763 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:05,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 584 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:52:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-09 19:52:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1846. [2024-11-09 19:52:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 2.12520325203252) internal successors, (3921), 1845 states have internal predecessors, (3921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 3921 transitions. [2024-11-09 19:52:05,516 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 3921 transitions. Word has length 96 [2024-11-09 19:52:05,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:05,516 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 3921 transitions. [2024-11-09 19:52:05,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:05,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 3921 transitions. [2024-11-09 19:52:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 19:52:05,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:05,522 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:05,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:52:05,523 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:05,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1750036914, now seen corresponding path program 1 times [2024-11-09 19:52:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:05,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235163285] [2024-11-09 19:52:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:05,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:05,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235163285] [2024-11-09 19:52:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235163285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:05,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462928965] [2024-11-09 19:52:05,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:05,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:05,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:05,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:05,768 INFO L87 Difference]: Start difference. First operand 1846 states and 3921 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:08,171 INFO L93 Difference]: Finished difference Result 4564 states and 9874 transitions. [2024-11-09 19:52:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:08,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2024-11-09 19:52:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:08,186 INFO L225 Difference]: With dead ends: 4564 [2024-11-09 19:52:08,186 INFO L226 Difference]: Without dead ends: 2720 [2024-11-09 19:52:08,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:08,190 INFO L432 NwaCegarLoop]: 1180 mSDtfsCounter, 839 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:08,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1250 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:52:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2024-11-09 19:52:08,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2718. [2024-11-09 19:52:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2717 states have (on average 2.090172984909827) internal successors, (5679), 2717 states have internal predecessors, (5679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 5679 transitions. [2024-11-09 19:52:08,257 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 5679 transitions. Word has length 99 [2024-11-09 19:52:08,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:08,258 INFO L471 AbstractCegarLoop]: Abstraction has 2718 states and 5679 transitions. [2024-11-09 19:52:08,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:08,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 5679 transitions. [2024-11-09 19:52:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-09 19:52:08,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:08,269 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:52:08,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:52:08,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:08,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash -410909237, now seen corresponding path program 1 times [2024-11-09 19:52:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:08,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454831693] [2024-11-09 19:52:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:08,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:52:08,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:08,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454831693] [2024-11-09 19:52:08,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454831693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:08,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:08,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:52:08,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558835721] [2024-11-09 19:52:08,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:08,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:08,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:08,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:08,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:08,593 INFO L87 Difference]: Start difference. First operand 2718 states and 5679 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:10,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:10,894 INFO L93 Difference]: Finished difference Result 8004 states and 16825 transitions. [2024-11-09 19:52:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:10,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-11-09 19:52:10,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:10,915 INFO L225 Difference]: With dead ends: 8004 [2024-11-09 19:52:10,915 INFO L226 Difference]: Without dead ends: 4432 [2024-11-09 19:52:10,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:10,922 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 745 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:10,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 592 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:52:10,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2024-11-09 19:52:11,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 3580. [2024-11-09 19:52:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 1.9773679798826487) internal successors, (7077), 3579 states have internal predecessors, (7077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 7077 transitions. [2024-11-09 19:52:11,037 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 7077 transitions. Word has length 169 [2024-11-09 19:52:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:11,038 INFO L471 AbstractCegarLoop]: Abstraction has 3580 states and 7077 transitions. [2024-11-09 19:52:11,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 7077 transitions. [2024-11-09 19:52:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-09 19:52:11,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:11,042 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:52:11,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:52:11,042 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:11,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:11,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1932257560, now seen corresponding path program 1 times [2024-11-09 19:52:11,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140750351] [2024-11-09 19:52:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:11,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:11,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:11,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140750351] [2024-11-09 19:52:11,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140750351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:11,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:11,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:11,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921965350] [2024-11-09 19:52:11,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:11,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:11,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:11,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:11,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:11,247 INFO L87 Difference]: Start difference. First operand 3580 states and 7077 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:13,339 INFO L93 Difference]: Finished difference Result 9296 states and 18628 transitions. [2024-11-09 19:52:13,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:13,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2024-11-09 19:52:13,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:13,362 INFO L225 Difference]: With dead ends: 9296 [2024-11-09 19:52:13,362 INFO L226 Difference]: Without dead ends: 5718 [2024-11-09 19:52:13,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:13,370 INFO L432 NwaCegarLoop]: 1087 mSDtfsCounter, 854 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:13,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1147 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:52:13,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2024-11-09 19:52:13,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 5718. [2024-11-09 19:52:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5717 states have (on average 1.9732377120867588) internal successors, (11281), 5717 states have internal predecessors, (11281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 11281 transitions. [2024-11-09 19:52:13,475 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 11281 transitions. Word has length 182 [2024-11-09 19:52:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:13,477 INFO L471 AbstractCegarLoop]: Abstraction has 5718 states and 11281 transitions. [2024-11-09 19:52:13,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 11281 transitions. [2024-11-09 19:52:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-09 19:52:13,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:13,479 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:52:13,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:52:13,479 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:13,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:13,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1919294018, now seen corresponding path program 1 times [2024-11-09 19:52:13,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:13,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30876429] [2024-11-09 19:52:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:13,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:52:13,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:13,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30876429] [2024-11-09 19:52:13,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30876429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:13,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:13,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:13,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611488038] [2024-11-09 19:52:13,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:13,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:13,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:13,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:13,719 INFO L87 Difference]: Start difference. First operand 5718 states and 11281 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:15,722 INFO L93 Difference]: Finished difference Result 14411 states and 28625 transitions. [2024-11-09 19:52:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:15,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 [2024-11-09 19:52:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:15,750 INFO L225 Difference]: With dead ends: 14411 [2024-11-09 19:52:15,750 INFO L226 Difference]: Without dead ends: 8694 [2024-11-09 19:52:15,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:15,758 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 783 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:15,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 450 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:52:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8694 states. [2024-11-09 19:52:15,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8694 to 5691. [2024-11-09 19:52:15,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5691 states, 5690 states have (on average 1.9753954305799648) internal successors, (11240), 5690 states have internal predecessors, (11240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5691 states to 5691 states and 11240 transitions. [2024-11-09 19:52:15,891 INFO L78 Accepts]: Start accepts. Automaton has 5691 states and 11240 transitions. Word has length 184 [2024-11-09 19:52:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:15,891 INFO L471 AbstractCegarLoop]: Abstraction has 5691 states and 11240 transitions. [2024-11-09 19:52:15,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5691 states and 11240 transitions. [2024-11-09 19:52:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-09 19:52:15,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:15,895 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:15,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:52:15,896 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:15,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -257117543, now seen corresponding path program 1 times [2024-11-09 19:52:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:15,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066558148] [2024-11-09 19:52:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-09 19:52:16,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:16,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066558148] [2024-11-09 19:52:16,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066558148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:16,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:16,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:16,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103663982] [2024-11-09 19:52:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:16,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:16,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:16,137 INFO L87 Difference]: Start difference. First operand 5691 states and 11240 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:18,385 INFO L93 Difference]: Finished difference Result 14350 states and 28529 transitions. [2024-11-09 19:52:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:18,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2024-11-09 19:52:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:18,405 INFO L225 Difference]: With dead ends: 14350 [2024-11-09 19:52:18,406 INFO L226 Difference]: Without dead ends: 7809 [2024-11-09 19:52:18,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:18,416 INFO L432 NwaCegarLoop]: 1139 mSDtfsCounter, 741 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:18,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1210 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:52:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2024-11-09 19:52:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 7809. [2024-11-09 19:52:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7809 states, 7808 states have (on average 1.9436475409836065) internal successors, (15176), 7808 states have internal predecessors, (15176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7809 states to 7809 states and 15176 transitions. [2024-11-09 19:52:18,548 INFO L78 Accepts]: Start accepts. Automaton has 7809 states and 15176 transitions. Word has length 263 [2024-11-09 19:52:18,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:18,549 INFO L471 AbstractCegarLoop]: Abstraction has 7809 states and 15176 transitions. [2024-11-09 19:52:18,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:18,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7809 states and 15176 transitions. [2024-11-09 19:52:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-09 19:52:18,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:18,554 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:52:18,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:52:18,555 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:18,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash -7296570, now seen corresponding path program 1 times [2024-11-09 19:52:18,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:18,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051053303] [2024-11-09 19:52:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:18,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-09 19:52:18,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:18,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051053303] [2024-11-09 19:52:18,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051053303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:18,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:18,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:18,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894095270] [2024-11-09 19:52:18,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:18,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:18,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:18,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:18,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:18,841 INFO L87 Difference]: Start difference. First operand 7809 states and 15176 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:21,121 INFO L93 Difference]: Finished difference Result 18604 states and 36352 transitions. [2024-11-09 19:52:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:21,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2024-11-09 19:52:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:21,147 INFO L225 Difference]: With dead ends: 18604 [2024-11-09 19:52:21,148 INFO L226 Difference]: Without dead ends: 10797 [2024-11-09 19:52:21,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:21,159 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 804 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:21,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 406 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:52:21,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10797 states. [2024-11-09 19:52:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10797 to 9940. [2024-11-09 19:52:21,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9940 states, 9939 states have (on average 1.9475802394607102) internal successors, (19357), 9939 states have internal predecessors, (19357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9940 states to 9940 states and 19357 transitions. [2024-11-09 19:52:21,304 INFO L78 Accepts]: Start accepts. Automaton has 9940 states and 19357 transitions. Word has length 303 [2024-11-09 19:52:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:21,306 INFO L471 AbstractCegarLoop]: Abstraction has 9940 states and 19357 transitions. [2024-11-09 19:52:21,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 9940 states and 19357 transitions. [2024-11-09 19:52:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-11-09 19:52:21,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:21,313 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:21,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:52:21,313 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:21,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:21,314 INFO L85 PathProgramCache]: Analyzing trace with hash -454336114, now seen corresponding path program 1 times [2024-11-09 19:52:21,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:21,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581512924] [2024-11-09 19:52:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:21,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:21,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:21,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581512924] [2024-11-09 19:52:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581512924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:21,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:21,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:21,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868549223] [2024-11-09 19:52:21,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:21,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:21,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:21,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:21,716 INFO L87 Difference]: Start difference. First operand 9940 states and 19357 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:24,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:24,796 INFO L93 Difference]: Finished difference Result 26302 states and 51315 transitions. [2024-11-09 19:52:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 [2024-11-09 19:52:24,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:24,829 INFO L225 Difference]: With dead ends: 26302 [2024-11-09 19:52:24,829 INFO L226 Difference]: Without dead ends: 15938 [2024-11-09 19:52:24,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:24,842 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 1366 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 4129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:24,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 204 Invalid, 4129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 19:52:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15938 states. [2024-11-09 19:52:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15938 to 15936. [2024-11-09 19:52:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15936 states, 15935 states have (on average 1.9556950109821147) internal successors, (31164), 15935 states have internal predecessors, (31164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15936 states to 15936 states and 31164 transitions. [2024-11-09 19:52:25,204 INFO L78 Accepts]: Start accepts. Automaton has 15936 states and 31164 transitions. Word has length 368 [2024-11-09 19:52:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:25,205 INFO L471 AbstractCegarLoop]: Abstraction has 15936 states and 31164 transitions. [2024-11-09 19:52:25,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 15936 states and 31164 transitions. [2024-11-09 19:52:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-09 19:52:25,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:25,217 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:52:25,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:52:25,217 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:25,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash 797698471, now seen corresponding path program 1 times [2024-11-09 19:52:25,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:25,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055125126] [2024-11-09 19:52:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:25,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-09 19:52:25,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:25,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055125126] [2024-11-09 19:52:25,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055125126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:25,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:25,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:25,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453113711] [2024-11-09 19:52:25,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:25,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:25,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:25,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:25,586 INFO L87 Difference]: Start difference. First operand 15936 states and 31164 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:27,753 INFO L93 Difference]: Finished difference Result 44253 states and 86763 transitions. [2024-11-09 19:52:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:27,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 404 [2024-11-09 19:52:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:27,806 INFO L225 Difference]: With dead ends: 44253 [2024-11-09 19:52:27,807 INFO L226 Difference]: Without dead ends: 28319 [2024-11-09 19:52:27,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:27,822 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 857 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:27,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 290 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:52:27,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28319 states. [2024-11-09 19:52:28,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28319 to 27875. [2024-11-09 19:52:28,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27875 states, 27874 states have (on average 1.951711272153261) internal successors, (54402), 27874 states have internal predecessors, (54402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27875 states to 27875 states and 54402 transitions. [2024-11-09 19:52:28,332 INFO L78 Accepts]: Start accepts. Automaton has 27875 states and 54402 transitions. Word has length 404 [2024-11-09 19:52:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:28,333 INFO L471 AbstractCegarLoop]: Abstraction has 27875 states and 54402 transitions. [2024-11-09 19:52:28,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 27875 states and 54402 transitions. [2024-11-09 19:52:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-09 19:52:28,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:28,343 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:28,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:52:28,344 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:28,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:28,344 INFO L85 PathProgramCache]: Analyzing trace with hash -180321212, now seen corresponding path program 1 times [2024-11-09 19:52:28,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:28,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505633240] [2024-11-09 19:52:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:28,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 49 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:30,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:30,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505633240] [2024-11-09 19:52:30,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505633240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:30,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98602600] [2024-11-09 19:52:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:30,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:30,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:30,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:52:30,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:52:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:30,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:52:30,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:52:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 49 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:30,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:52:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:31,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98602600] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:31,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:52:31,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 9 [2024-11-09 19:52:31,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530894324] [2024-11-09 19:52:31,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:31,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 19:52:31,492 INFO L87 Difference]: Start difference. First operand 27875 states and 54402 transitions. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:35,429 INFO L93 Difference]: Finished difference Result 83933 states and 163992 transitions. [2024-11-09 19:52:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2024-11-09 19:52:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:35,525 INFO L225 Difference]: With dead ends: 83933 [2024-11-09 19:52:35,525 INFO L226 Difference]: Without dead ends: 55205 [2024-11-09 19:52:35,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 19:52:35,552 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 1430 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3759 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 4562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 3759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:35,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 177 Invalid, 4562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 3759 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:52:35,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55205 states. [2024-11-09 19:52:36,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55205 to 51358. [2024-11-09 19:52:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51358 states, 51357 states have (on average 1.9430846817376404) internal successors, (99791), 51357 states have internal predecessors, (99791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51358 states to 51358 states and 99791 transitions. [2024-11-09 19:52:36,842 INFO L78 Accepts]: Start accepts. Automaton has 51358 states and 99791 transitions. Word has length 416 [2024-11-09 19:52:36,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:36,843 INFO L471 AbstractCegarLoop]: Abstraction has 51358 states and 99791 transitions. [2024-11-09 19:52:36,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:36,844 INFO L276 IsEmpty]: Start isEmpty. Operand 51358 states and 99791 transitions. [2024-11-09 19:52:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-09 19:52:36,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:36,869 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:36,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:52:37,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 19:52:37,071 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:37,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash 291492227, now seen corresponding path program 1 times [2024-11-09 19:52:37,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:37,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131987361] [2024-11-09 19:52:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:52:37,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:37,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131987361] [2024-11-09 19:52:37,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131987361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:37,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:37,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:52:37,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322748793] [2024-11-09 19:52:37,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:37,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:37,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:37,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:37,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:37,942 INFO L87 Difference]: Start difference. First operand 51358 states and 99791 transitions. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:41,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:41,575 INFO L93 Difference]: Finished difference Result 119784 states and 232781 transitions. [2024-11-09 19:52:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:41,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 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 466 [2024-11-09 19:52:41,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:41,849 INFO L225 Difference]: With dead ends: 119784 [2024-11-09 19:52:41,849 INFO L226 Difference]: Without dead ends: 68428 [2024-11-09 19:52:41,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:41,884 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 1399 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 4191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:41,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 369 Invalid, 4191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 3904 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:52:41,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68428 states. [2024-11-09 19:52:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68428 to 61592. [2024-11-09 19:52:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61592 states, 61591 states have (on average 1.9438391972853177) internal successors, (119723), 61591 states have internal predecessors, (119723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61592 states to 61592 states and 119723 transitions. [2024-11-09 19:52:43,187 INFO L78 Accepts]: Start accepts. Automaton has 61592 states and 119723 transitions. Word has length 466 [2024-11-09 19:52:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:43,188 INFO L471 AbstractCegarLoop]: Abstraction has 61592 states and 119723 transitions. [2024-11-09 19:52:43,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 61592 states and 119723 transitions. [2024-11-09 19:52:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-09 19:52:43,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:43,209 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:43,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:52:43,210 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:43,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:43,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1362927943, now seen corresponding path program 1 times [2024-11-09 19:52:43,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:43,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541227566] [2024-11-09 19:52:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:43,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 19:52:43,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:43,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541227566] [2024-11-09 19:52:43,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541227566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:43,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:43,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:43,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116537317] [2024-11-09 19:52:43,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:43,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:43,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:43,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:43,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:43,688 INFO L87 Difference]: Start difference. First operand 61592 states and 119723 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 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) [2024-11-09 19:52:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:46,005 INFO L93 Difference]: Finished difference Result 120618 states and 234287 transitions. [2024-11-09 19:52:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:46,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 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 474 [2024-11-09 19:52:46,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:46,099 INFO L225 Difference]: With dead ends: 120618 [2024-11-09 19:52:46,100 INFO L226 Difference]: Without dead ends: 59028 [2024-11-09 19:52:46,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:46,129 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 827 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:46,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 327 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:52:46,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59028 states. [2024-11-09 19:52:47,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59028 to 54762. [2024-11-09 19:52:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54762 states, 54761 states have (on average 1.9437008089698873) internal successors, (106439), 54761 states have internal predecessors, (106439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54762 states to 54762 states and 106439 transitions. [2024-11-09 19:52:47,265 INFO L78 Accepts]: Start accepts. Automaton has 54762 states and 106439 transitions. Word has length 474 [2024-11-09 19:52:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:47,266 INFO L471 AbstractCegarLoop]: Abstraction has 54762 states and 106439 transitions. [2024-11-09 19:52:47,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 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) [2024-11-09 19:52:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 54762 states and 106439 transitions. [2024-11-09 19:52:47,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-11-09 19:52:47,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:47,281 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:47,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:52:47,281 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:47,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1756615914, now seen corresponding path program 1 times [2024-11-09 19:52:47,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:47,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786337818] [2024-11-09 19:52:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:47,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 19:52:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:48,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786337818] [2024-11-09 19:52:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786337818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:48,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:48,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:48,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266917373] [2024-11-09 19:52:48,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:48,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:48,117 INFO L87 Difference]: Start difference. First operand 54762 states and 106439 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:50,149 INFO L93 Difference]: Finished difference Result 110803 states and 215290 transitions. [2024-11-09 19:52:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:50,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 491 [2024-11-09 19:52:50,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:50,390 INFO L225 Difference]: With dead ends: 110803 [2024-11-09 19:52:50,391 INFO L226 Difference]: Without dead ends: 56043 [2024-11-09 19:52:50,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:50,416 INFO L432 NwaCegarLoop]: 1145 mSDtfsCounter, 485 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:50,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1203 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 19:52:50,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56043 states. [2024-11-09 19:52:51,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56043 to 56041. [2024-11-09 19:52:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56041 states, 56040 states have (on average 1.9412740899357601) internal successors, (108789), 56040 states have internal predecessors, (108789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:51,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56041 states to 56041 states and 108789 transitions. [2024-11-09 19:52:51,387 INFO L78 Accepts]: Start accepts. Automaton has 56041 states and 108789 transitions. Word has length 491 [2024-11-09 19:52:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:51,388 INFO L471 AbstractCegarLoop]: Abstraction has 56041 states and 108789 transitions. [2024-11-09 19:52:51,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 56041 states and 108789 transitions. [2024-11-09 19:52:51,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2024-11-09 19:52:51,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:51,398 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:51,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:52:51,399 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:51,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:51,399 INFO L85 PathProgramCache]: Analyzing trace with hash 577117025, now seen corresponding path program 1 times [2024-11-09 19:52:51,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:51,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410045711] [2024-11-09 19:52:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:51,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 212 proven. 79 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 19:52:52,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:52,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410045711] [2024-11-09 19:52:52,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410045711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:52,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410537596] [2024-11-09 19:52:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:52,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:52,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:52,177 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:52:52,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:52:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:52,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:52:52,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:52:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 212 proven. 79 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 19:52:52,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:52:52,742 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 19:52:52,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410537596] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:52,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:52:52,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:52:52,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358513571] [2024-11-09 19:52:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:52,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:52,748 INFO L87 Difference]: Start difference. First operand 56041 states and 108789 transitions. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:56,512 INFO L93 Difference]: Finished difference Result 127022 states and 246368 transitions. [2024-11-09 19:52:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:56,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 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 496 [2024-11-09 19:52:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:56,622 INFO L225 Difference]: With dead ends: 127022 [2024-11-09 19:52:56,622 INFO L226 Difference]: Without dead ends: 70554 [2024-11-09 19:52:56,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 989 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:56,640 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 1560 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 3746 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 4189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 3746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:56,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 211 Invalid, 4189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 3746 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:52:56,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70554 states. [2024-11-09 19:52:57,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70554 to 63736. [2024-11-09 19:52:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63736 states, 63735 states have (on average 1.9408958970738213) internal successors, (123703), 63735 states have internal predecessors, (123703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63736 states to 63736 states and 123703 transitions. [2024-11-09 19:52:57,736 INFO L78 Accepts]: Start accepts. Automaton has 63736 states and 123703 transitions. Word has length 496 [2024-11-09 19:52:57,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:57,737 INFO L471 AbstractCegarLoop]: Abstraction has 63736 states and 123703 transitions. [2024-11-09 19:52:57,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 63736 states and 123703 transitions. [2024-11-09 19:52:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2024-11-09 19:52:57,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:57,748 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:57,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 19:52:57,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 19:52:57,949 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:57,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2065444846, now seen corresponding path program 1 times [2024-11-09 19:52:57,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:57,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187567892] [2024-11-09 19:52:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:57,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 83 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 19:52:59,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:59,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187567892] [2024-11-09 19:52:59,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187567892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:59,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354889258] [2024-11-09 19:52:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:59,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:59,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:59,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:52:59,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:52:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:59,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:52:59,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:53:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 83 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 19:53:00,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:53:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 83 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 19:53:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354889258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:53:01,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:53:01,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-09 19:53:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574994517] [2024-11-09 19:53:01,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:53:01,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 19:53:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:01,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 19:53:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-09 19:53:01,029 INFO L87 Difference]: Start difference. First operand 63736 states and 123703 transitions. Second operand has 10 states, 10 states have (on average 88.0) internal successors, (880), 9 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)