./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label03.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/Problem12_label03.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 90400de2e948dc0b7a66852a3651d48f68ed6fc13644dccf9f88145e36827912 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:24:24,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:24:24,649 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:24:24,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:24:24,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:24:24,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:24:24,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:24:24,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:24:24,701 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:24:24,702 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:24:24,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:24:24,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:24:24,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:24:24,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:24:24,705 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:24:24,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:24:24,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:24:24,706 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:24:24,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:24:24,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:24:24,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:24:24,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:24:24,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:24:24,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:24:24,710 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:24:24,710 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:24:24,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:24:24,711 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:24:24,711 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:24:24,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:24:24,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:24:24,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:24:24,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:24:24,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:24:24,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:24:24,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:24:24,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:24:24,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:24:24,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:24:24,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:24:24,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:24:24,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:24:24,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90400de2e948dc0b7a66852a3651d48f68ed6fc13644dccf9f88145e36827912 [2024-11-09 19:24:24,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:24:24,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:24:24,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:24:24,963 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:24:24,964 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:24:24,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label03.c [2024-11-09 19:24:26,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:24:26,584 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:24:26,586 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label03.c [2024-11-09 19:24:26,607 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5794972c6/94f27c2cbb974df5addfe91833a71c4d/FLAG90a6b9b9c [2024-11-09 19:24:26,788 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5794972c6/94f27c2cbb974df5addfe91833a71c4d [2024-11-09 19:24:26,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:24:26,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:24:26,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:24:26,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:24:26,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:24:26,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:24:26" (1/1) ... [2024-11-09 19:24:26,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8b24bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:26, skipping insertion in model container [2024-11-09 19:24:26,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:24:26" (1/1) ... [2024-11-09 19:24:26,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:24:27,056 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/Problem12_label03.c[2698,2711] [2024-11-09 19:24:27,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:24:27,756 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:24:27,772 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/Problem12_label03.c[2698,2711] [2024-11-09 19:24:28,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:24:28,062 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:24:28,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28 WrapperNode [2024-11-09 19:24:28,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:24:28,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:24:28,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:24:28,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:24:28,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,310 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-09 19:24:28,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:24:28,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:24:28,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:24:28,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:24:28,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,542 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 19:24:28,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,692 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:24:28,789 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:24:28,789 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:24:28,789 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:24:28,790 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (1/1) ... [2024-11-09 19:24:28,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:24:28,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:24:28,820 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 19:24:28,823 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 19:24:28,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:24:28,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:24:28,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:24:28,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:24:28,913 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:24:28,914 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:24:32,997 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:24:32,997 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-09 19:24:32,997 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:24:33,221 INFO L? ?]: Removed 2039 outVars from TransFormulas that were not future-live. [2024-11-09 19:24:33,221 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:24:33,254 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:24:33,255 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:24:33,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:24:33 BoogieIcfgContainer [2024-11-09 19:24:33,255 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:24:33,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:24:33,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:24:33,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:24:33,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:24:26" (1/3) ... [2024-11-09 19:24:33,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4f7940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:24:33, skipping insertion in model container [2024-11-09 19:24:33,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:28" (2/3) ... [2024-11-09 19:24:33,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4f7940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:24:33, skipping insertion in model container [2024-11-09 19:24:33,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:24:33" (3/3) ... [2024-11-09 19:24:33,264 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label03.c [2024-11-09 19:24:33,276 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:24:33,277 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:24:33,377 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:24:33,388 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;@1f1fd0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:24:33,389 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:24:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:33,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 19:24:33,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:33,405 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] [2024-11-09 19:24:33,406 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:33,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:33,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1744325064, now seen corresponding path program 1 times [2024-11-09 19:24:33,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:33,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384556293] [2024-11-09 19:24:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:33,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:33,640 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 19:24:33,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:33,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384556293] [2024-11-09 19:24:33,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384556293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:33,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:33,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:24:33,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547982996] [2024-11-09 19:24:33,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:33,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:33,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:33,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:33,669 INFO L87 Difference]: Start difference. First operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 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 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:37,675 INFO L93 Difference]: Finished difference Result 2410 states and 6691 transitions. [2024-11-09 19:24:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:24:37,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-09 19:24:37,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:37,698 INFO L225 Difference]: With dead ends: 2410 [2024-11-09 19:24:37,698 INFO L226 Difference]: Without dead ends: 1509 [2024-11-09 19:24:37,703 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 19:24:37,706 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 1481 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3697 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 3697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:37,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 529 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 3697 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 19:24:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-09 19:24:37,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-09 19:24:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 2.5072944297082227) internal successors, (3781), 1508 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 3781 transitions. [2024-11-09 19:24:37,806 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 3781 transitions. Word has length 21 [2024-11-09 19:24:37,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:37,807 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 3781 transitions. [2024-11-09 19:24:37,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:37,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 3781 transitions. [2024-11-09 19:24:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 19:24:37,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:37,810 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:24:37,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:24:37,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:37,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash -707890599, now seen corresponding path program 1 times [2024-11-09 19:24:37,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:37,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723775602] [2024-11-09 19:24:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:37,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:24:38,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:38,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723775602] [2024-11-09 19:24:38,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723775602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:38,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:38,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:24:38,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990864188] [2024-11-09 19:24:38,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:38,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 19:24:38,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:38,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 19:24:38,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:24:38,216 INFO L87 Difference]: Start difference. First operand 1509 states and 3781 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:42,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:42,228 INFO L93 Difference]: Finished difference Result 3768 states and 9220 transitions. [2024-11-09 19:24:42,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:24:42,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2024-11-09 19:24:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:42,237 INFO L225 Difference]: With dead ends: 3768 [2024-11-09 19:24:42,237 INFO L226 Difference]: Without dead ends: 2261 [2024-11-09 19:24:42,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:24:42,241 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 2938 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 5192 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 5413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 5192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:42,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2938 Valid, 1175 Invalid, 5413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 5192 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:24:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2024-11-09 19:24:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2024-11-09 19:24:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 2.3092920353982302) internal successors, (5219), 2260 states have internal predecessors, (5219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:42,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 5219 transitions. [2024-11-09 19:24:42,279 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 5219 transitions. Word has length 97 [2024-11-09 19:24:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:42,280 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 5219 transitions. [2024-11-09 19:24:42,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 5219 transitions. [2024-11-09 19:24:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-09 19:24:42,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:42,286 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 19:24:42,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:24:42,287 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:42,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash -555167905, now seen corresponding path program 1 times [2024-11-09 19:24:42,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:42,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764303086] [2024-11-09 19:24:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:42,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:24:42,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:42,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764303086] [2024-11-09 19:24:42,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764303086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:24:42,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150949742] [2024-11-09 19:24:42,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:42,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:24:42,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:24:42,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:24:42,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:24:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:42,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:24:42,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:24:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 19:24:42,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:24:42,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150949742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:42,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:24:42,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:24:42,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635065127] [2024-11-09 19:24:42,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:42,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:42,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:42,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:42,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:24:42,962 INFO L87 Difference]: Start difference. First operand 2261 states and 5219 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:46,086 INFO L93 Difference]: Finished difference Result 5272 states and 12775 transitions. [2024-11-09 19:24:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:24:46,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-11-09 19:24:46,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:46,100 INFO L225 Difference]: With dead ends: 5272 [2024-11-09 19:24:46,101 INFO L226 Difference]: Without dead ends: 3765 [2024-11-09 19:24:46,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:24:46,105 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 1380 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3827 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 3827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:46,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 305 Invalid, 4466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 3827 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 19:24:46,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-09 19:24:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3765. [2024-11-09 19:24:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3764 states have (on average 2.3546758767268865) internal successors, (8863), 3764 states have internal predecessors, (8863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 8863 transitions. [2024-11-09 19:24:46,202 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 8863 transitions. Word has length 163 [2024-11-09 19:24:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:46,204 INFO L471 AbstractCegarLoop]: Abstraction has 3765 states and 8863 transitions. [2024-11-09 19:24:46,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:46,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 8863 transitions. [2024-11-09 19:24:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-09 19:24:46,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:46,207 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:24:46,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:24:46,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:24:46,411 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:46,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash -566351388, now seen corresponding path program 1 times [2024-11-09 19:24:46,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:46,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456336331] [2024-11-09 19:24:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:46,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:24:46,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:46,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456336331] [2024-11-09 19:24:46,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456336331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:46,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:46,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:24:46,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520957520] [2024-11-09 19:24:46,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:46,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:24:46,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:46,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:24:46,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:46,671 INFO L87 Difference]: Start difference. First operand 3765 states and 8863 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:50,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:50,320 INFO L93 Difference]: Finished difference Result 8318 states and 19608 transitions. [2024-11-09 19:24:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:24:50,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2024-11-09 19:24:50,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:50,338 INFO L225 Difference]: With dead ends: 8318 [2024-11-09 19:24:50,338 INFO L226 Difference]: Without dead ends: 5269 [2024-11-09 19:24:50,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:24:50,342 INFO L432 NwaCegarLoop]: 697 mSDtfsCounter, 1382 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5147 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 5419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 5147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:50,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 714 Invalid, 5419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 5147 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:24:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5269 states. [2024-11-09 19:24:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5269 to 4517. [2024-11-09 19:24:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4516 states have (on average 2.2779007971656333) internal successors, (10287), 4516 states have internal predecessors, (10287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 10287 transitions. [2024-11-09 19:24:50,418 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 10287 transitions. Word has length 171 [2024-11-09 19:24:50,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:50,418 INFO L471 AbstractCegarLoop]: Abstraction has 4517 states and 10287 transitions. [2024-11-09 19:24:50,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:50,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 10287 transitions. [2024-11-09 19:24:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-09 19:24:50,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:50,421 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:24:50,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:24:50,421 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:50,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:50,421 INFO L85 PathProgramCache]: Analyzing trace with hash 406513118, now seen corresponding path program 1 times [2024-11-09 19:24:50,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:50,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518536668] [2024-11-09 19:24:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:50,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 19:24:50,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:50,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518536668] [2024-11-09 19:24:50,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518536668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:24:50,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16191623] [2024-11-09 19:24:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:50,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:24:50,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:24:50,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:24:50,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:24:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:50,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:24:50,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:24:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:24:51,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:24:51,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16191623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:51,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:24:51,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:24:51,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886885154] [2024-11-09 19:24:51,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:51,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:51,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:51,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:51,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:24:51,044 INFO L87 Difference]: Start difference. First operand 4517 states and 10287 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:53,994 INFO L93 Difference]: Finished difference Result 10536 states and 24255 transitions. [2024-11-09 19:24:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:24:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2024-11-09 19:24:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:54,029 INFO L225 Difference]: With dead ends: 10536 [2024-11-09 19:24:54,030 INFO L226 Difference]: Without dead ends: 6773 [2024-11-09 19:24:54,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:24:54,038 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 1378 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 3333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:54,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 430 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 3333 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:24:54,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2024-11-09 19:24:54,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6773. [2024-11-09 19:24:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6772 states have (on average 2.100708800945068) internal successors, (14226), 6772 states have internal predecessors, (14226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 14226 transitions. [2024-11-09 19:24:54,144 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 14226 transitions. Word has length 233 [2024-11-09 19:24:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:54,144 INFO L471 AbstractCegarLoop]: Abstraction has 6773 states and 14226 transitions. [2024-11-09 19:24:54,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 14226 transitions. [2024-11-09 19:24:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-09 19:24:54,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:54,147 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:24:54,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:24:54,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:24:54,353 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:54,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash 657000548, now seen corresponding path program 1 times [2024-11-09 19:24:54,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:54,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626578671] [2024-11-09 19:24:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:24:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:54,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626578671] [2024-11-09 19:24:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626578671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:54,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:54,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:24:54,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737577745] [2024-11-09 19:24:54,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:54,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:54,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:54,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:54,453 INFO L87 Difference]: Start difference. First operand 6773 states and 14226 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:57,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:24:57,493 INFO L93 Difference]: Finished difference Result 15048 states and 32238 transitions. [2024-11-09 19:24:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:24:57,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2024-11-09 19:24:57,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:24:57,514 INFO L225 Difference]: With dead ends: 15048 [2024-11-09 19:24:57,514 INFO L226 Difference]: Without dead ends: 9029 [2024-11-09 19:24:57,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:57,522 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 1452 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 4197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:24:57,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 487 Invalid, 4197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:24:57,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9029 states. [2024-11-09 19:24:57,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9029 to 6773. [2024-11-09 19:24:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6772 states have (on average 2.100708800945068) internal successors, (14226), 6772 states have internal predecessors, (14226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 14226 transitions. [2024-11-09 19:24:57,630 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 14226 transitions. Word has length 235 [2024-11-09 19:24:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:24:57,630 INFO L471 AbstractCegarLoop]: Abstraction has 6773 states and 14226 transitions. [2024-11-09 19:24:57,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:24:57,631 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 14226 transitions. [2024-11-09 19:24:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-09 19:24:57,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:24:57,632 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:24:57,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:24:57,633 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:24:57,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:24:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash 365276724, now seen corresponding path program 1 times [2024-11-09 19:24:57,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:24:57,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708838746] [2024-11-09 19:24:57,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:24:57,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:24:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:24:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 19:24:57,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:24:57,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708838746] [2024-11-09 19:24:57,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708838746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:24:57,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:24:57,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:24:57,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749893495] [2024-11-09 19:24:57,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:24:57,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:24:57,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:24:57,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:24:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:24:57,747 INFO L87 Difference]: Start difference. First operand 6773 states and 14226 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:00,966 INFO L93 Difference]: Finished difference Result 17307 states and 36845 transitions. [2024-11-09 19:25:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:00,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2024-11-09 19:25:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:00,983 INFO L225 Difference]: With dead ends: 17307 [2024-11-09 19:25:00,984 INFO L226 Difference]: Without dead ends: 11288 [2024-11-09 19:25:00,990 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 19:25:00,990 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 1529 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 4135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:00,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 317 Invalid, 4135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:25:01,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11288 states. [2024-11-09 19:25:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11288 to 10533. [2024-11-09 19:25:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10533 states, 10532 states have (on average 2.0842195214584125) internal successors, (21951), 10532 states have internal predecessors, (21951), 0 states have call successors, (0), 0 states 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 19:25:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10533 states to 10533 states and 21951 transitions. [2024-11-09 19:25:01,122 INFO L78 Accepts]: Start accepts. Automaton has 10533 states and 21951 transitions. Word has length 236 [2024-11-09 19:25:01,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:01,122 INFO L471 AbstractCegarLoop]: Abstraction has 10533 states and 21951 transitions. [2024-11-09 19:25:01,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 10533 states and 21951 transitions. [2024-11-09 19:25:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-09 19:25:01,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:01,126 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-09 19:25:01,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:25:01,127 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:01,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:01,127 INFO L85 PathProgramCache]: Analyzing trace with hash 887798093, now seen corresponding path program 1 times [2024-11-09 19:25:01,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:01,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875250345] [2024-11-09 19:25:01,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:01,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 19:25:01,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:01,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875250345] [2024-11-09 19:25:01,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875250345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:01,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:01,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333153250] [2024-11-09 19:25:01,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:01,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:01,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:01,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:01,263 INFO L87 Difference]: Start difference. First operand 10533 states and 21951 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 19:25:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:04,908 INFO L93 Difference]: Finished difference Result 30088 states and 62973 transitions. [2024-11-09 19:25:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:04,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 319 [2024-11-09 19:25:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:04,939 INFO L225 Difference]: With dead ends: 30088 [2024-11-09 19:25:04,939 INFO L226 Difference]: Without dead ends: 20309 [2024-11-09 19:25:04,953 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 19:25:04,953 INFO L432 NwaCegarLoop]: 2066 mSDtfsCounter, 1347 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4099 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 4464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 4099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:04,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 2076 Invalid, 4464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 4099 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:25:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20309 states. [2024-11-09 19:25:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20309 to 18053. [2024-11-09 19:25:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18053 states, 18052 states have (on average 2.080046532240195) internal successors, (37549), 18052 states have internal predecessors, (37549), 0 states have call successors, (0), 0 states 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 19:25:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18053 states to 18053 states and 37549 transitions. [2024-11-09 19:25:05,200 INFO L78 Accepts]: Start accepts. Automaton has 18053 states and 37549 transitions. Word has length 319 [2024-11-09 19:25:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:05,202 INFO L471 AbstractCegarLoop]: Abstraction has 18053 states and 37549 transitions. [2024-11-09 19:25:05,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 19:25:05,203 INFO L276 IsEmpty]: Start isEmpty. Operand 18053 states and 37549 transitions. [2024-11-09 19:25:05,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-09 19:25:05,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:05,210 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:05,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:25:05,210 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:05,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:05,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1761210407, now seen corresponding path program 1 times [2024-11-09 19:25:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:05,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854666695] [2024-11-09 19:25:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 19:25:05,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:05,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854666695] [2024-11-09 19:25:05,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854666695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:05,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:05,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491189407] [2024-11-09 19:25:05,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:05,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:05,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:05,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:05,505 INFO L87 Difference]: Start difference. First operand 18053 states and 37549 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 19:25:08,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:08,716 INFO L93 Difference]: Finished difference Result 43624 states and 91658 transitions. [2024-11-09 19:25:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:08,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 323 [2024-11-09 19:25:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:08,757 INFO L225 Difference]: With dead ends: 43624 [2024-11-09 19:25:08,757 INFO L226 Difference]: Without dead ends: 26325 [2024-11-09 19:25:08,775 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 19:25:08,776 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 1413 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3608 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 4320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 3608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:08,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 405 Invalid, 4320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [712 Valid, 3608 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 19:25:08,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26325 states. [2024-11-09 19:25:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26325 to 26325. [2024-11-09 19:25:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26325 states, 26324 states have (on average 2.0760142835435342) internal successors, (54649), 26324 states have internal predecessors, (54649), 0 states have call successors, (0), 0 states 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 19:25:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26325 states to 26325 states and 54649 transitions. [2024-11-09 19:25:09,140 INFO L78 Accepts]: Start accepts. Automaton has 26325 states and 54649 transitions. Word has length 323 [2024-11-09 19:25:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:09,141 INFO L471 AbstractCegarLoop]: Abstraction has 26325 states and 54649 transitions. [2024-11-09 19:25:09,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 19:25:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 26325 states and 54649 transitions. [2024-11-09 19:25:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-09 19:25:09,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:09,146 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:25:09,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:25:09,146 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:09,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:09,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1555956269, now seen corresponding path program 1 times [2024-11-09 19:25:09,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:09,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506538102] [2024-11-09 19:25:09,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:09,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 53 proven. 110 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-09 19:25:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506538102] [2024-11-09 19:25:09,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506538102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:25:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469169522] [2024-11-09 19:25:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:09,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:25:09,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:25:09,430 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 19:25:09,431 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 19:25:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:09,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:25:09,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:25:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-09 19:25:09,634 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:25:09,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469169522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:09,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:25:09,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 19:25:09,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920240781] [2024-11-09 19:25:09,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:09,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:09,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:25:09,636 INFO L87 Difference]: Start difference. First operand 26325 states and 54649 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 19:25:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:12,644 INFO L93 Difference]: Finished difference Result 62424 states and 131021 transitions. [2024-11-09 19:25:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:12,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 351 [2024-11-09 19:25:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:12,697 INFO L225 Difference]: With dead ends: 62424 [2024-11-09 19:25:12,697 INFO L226 Difference]: Without dead ends: 36853 [2024-11-09 19:25:12,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:25:12,718 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 1473 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3435 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 4269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 3435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:12,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 241 Invalid, 4269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 3435 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:25:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36853 states. [2024-11-09 19:25:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36853 to 36853. [2024-11-09 19:25:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36853 states, 36852 states have (on average 2.068707261478346) internal successors, (76236), 36852 states have internal predecessors, (76236), 0 states have call successors, (0), 0 states 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 19:25:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36853 states to 36853 states and 76236 transitions. [2024-11-09 19:25:13,289 INFO L78 Accepts]: Start accepts. Automaton has 36853 states and 76236 transitions. Word has length 351 [2024-11-09 19:25:13,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:13,290 INFO L471 AbstractCegarLoop]: Abstraction has 36853 states and 76236 transitions. [2024-11-09 19:25:13,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 19:25:13,290 INFO L276 IsEmpty]: Start isEmpty. Operand 36853 states and 76236 transitions. [2024-11-09 19:25:13,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-09 19:25:13,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:13,297 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:25:13,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:25:13,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:25:13,498 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:13,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:13,498 INFO L85 PathProgramCache]: Analyzing trace with hash -806649799, now seen corresponding path program 1 times [2024-11-09 19:25:13,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:13,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653565173] [2024-11-09 19:25:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:13,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-09 19:25:13,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:13,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653565173] [2024-11-09 19:25:13,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653565173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:13,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:13,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176538831] [2024-11-09 19:25:13,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:13,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:13,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:13,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:13,800 INFO L87 Difference]: Start difference. First operand 36853 states and 76236 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:17,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:17,188 INFO L93 Difference]: Finished difference Result 106040 states and 219995 transitions. [2024-11-09 19:25:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:17,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2024-11-09 19:25:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:17,268 INFO L225 Difference]: With dead ends: 106040 [2024-11-09 19:25:17,268 INFO L226 Difference]: Without dead ends: 66181 [2024-11-09 19:25:17,288 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 19:25:17,289 INFO L432 NwaCegarLoop]: 1990 mSDtfsCounter, 1454 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 4214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:17,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 2000 Invalid, 4214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 3594 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:25:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66181 states. [2024-11-09 19:25:17,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66181 to 63173. [2024-11-09 19:25:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63173 states, 63172 states have (on average 2.0272589121762805) internal successors, (128066), 63172 states have internal predecessors, (128066), 0 states have call successors, (0), 0 states 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 19:25:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63173 states to 63173 states and 128066 transitions. [2024-11-09 19:25:18,097 INFO L78 Accepts]: Start accepts. Automaton has 63173 states and 128066 transitions. Word has length 355 [2024-11-09 19:25:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:18,098 INFO L471 AbstractCegarLoop]: Abstraction has 63173 states and 128066 transitions. [2024-11-09 19:25:18,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 63173 states and 128066 transitions. [2024-11-09 19:25:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-09 19:25:18,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:18,103 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:25:18,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:25:18,103 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:18,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash -673993343, now seen corresponding path program 1 times [2024-11-09 19:25:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:18,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684065794] [2024-11-09 19:25:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 19:25:18,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:18,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684065794] [2024-11-09 19:25:18,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684065794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:18,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:18,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:18,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041243109] [2024-11-09 19:25:18,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:18,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:18,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:18,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:18,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:18,246 INFO L87 Difference]: Start difference. First operand 63173 states and 128066 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:22,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:22,032 INFO L93 Difference]: Finished difference Result 142888 states and 291513 transitions. [2024-11-09 19:25:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:22,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2024-11-09 19:25:22,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:22,140 INFO L225 Difference]: With dead ends: 142888 [2024-11-09 19:25:22,140 INFO L226 Difference]: Without dead ends: 80469 [2024-11-09 19:25:22,159 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 19:25:22,160 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 1460 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 4379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:22,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 108 Invalid, 4379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 3529 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:25:22,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80469 states. [2024-11-09 19:25:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80469 to 80469. [2024-11-09 19:25:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80469 states, 80468 states have (on average 2.0375304468857185) internal successors, (163956), 80468 states have internal predecessors, (163956), 0 states have call successors, (0), 0 states 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 19:25:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80469 states to 80469 states and 163956 transitions. [2024-11-09 19:25:23,153 INFO L78 Accepts]: Start accepts. Automaton has 80469 states and 163956 transitions. Word has length 379 [2024-11-09 19:25:23,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:23,154 INFO L471 AbstractCegarLoop]: Abstraction has 80469 states and 163956 transitions. [2024-11-09 19:25:23,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:23,154 INFO L276 IsEmpty]: Start isEmpty. Operand 80469 states and 163956 transitions. [2024-11-09 19:25:23,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-09 19:25:23,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:23,158 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:25:23,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:25:23,158 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:23,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:23,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1835686643, now seen corresponding path program 1 times [2024-11-09 19:25:23,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:23,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586397077] [2024-11-09 19:25:23,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:23,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-09 19:25:23,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586397077] [2024-11-09 19:25:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586397077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:23,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:23,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:23,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886667214] [2024-11-09 19:25:23,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:23,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:23,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:23,616 INFO L87 Difference]: Start difference. First operand 80469 states and 163956 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:27,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:27,306 INFO L93 Difference]: Finished difference Result 196280 states and 401169 transitions. [2024-11-09 19:25:27,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:27,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2024-11-09 19:25:27,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:27,769 INFO L225 Difference]: With dead ends: 196280 [2024-11-09 19:25:27,769 INFO L226 Difference]: Without dead ends: 116565 [2024-11-09 19:25:27,819 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 19:25:27,820 INFO L432 NwaCegarLoop]: 1856 mSDtfsCounter, 1432 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3749 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 4317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 3749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:27,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 1866 Invalid, 4317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 3749 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:25:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116565 states. [2024-11-09 19:25:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116565 to 113557. [2024-11-09 19:25:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113557 states, 113556 states have (on average 2.0338423332981086) internal successors, (230955), 113556 states have internal predecessors, (230955), 0 states have call successors, (0), 0 states 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 19:25:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113557 states to 113557 states and 230955 transitions. [2024-11-09 19:25:29,551 INFO L78 Accepts]: Start accepts. Automaton has 113557 states and 230955 transitions. Word has length 383 [2024-11-09 19:25:29,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:29,551 INFO L471 AbstractCegarLoop]: Abstraction has 113557 states and 230955 transitions. [2024-11-09 19:25:29,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:29,551 INFO L276 IsEmpty]: Start isEmpty. Operand 113557 states and 230955 transitions. [2024-11-09 19:25:29,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-09 19:25:29,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:29,557 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:25:29,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:25:29,557 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:29,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2095541827, now seen corresponding path program 1 times [2024-11-09 19:25:29,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:29,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863000513] [2024-11-09 19:25:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:29,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-09 19:25:29,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:29,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863000513] [2024-11-09 19:25:29,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863000513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:29,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:29,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604604502] [2024-11-09 19:25:29,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:29,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:29,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:29,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:29,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:29,740 INFO L87 Difference]: Start difference. First operand 113557 states and 230955 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 19:25:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:33,968 INFO L93 Difference]: Finished difference Result 272232 states and 556848 transitions. [2024-11-09 19:25:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:33,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 418 [2024-11-09 19:25:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:34,183 INFO L225 Difference]: With dead ends: 272232 [2024-11-09 19:25:34,183 INFO L226 Difference]: Without dead ends: 159429 [2024-11-09 19:25:34,248 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 19:25:34,249 INFO L432 NwaCegarLoop]: 1926 mSDtfsCounter, 1393 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 4176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:34,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 1934 Invalid, 4176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:25:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159429 states. [2024-11-09 19:25:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159429 to 151157. [2024-11-09 19:25:36,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151157 states, 151156 states have (on average 2.0204689195268464) internal successors, (305406), 151156 states have internal predecessors, (305406), 0 states have call successors, (0), 0 states 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 19:25:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151157 states to 151157 states and 305406 transitions. [2024-11-09 19:25:36,979 INFO L78 Accepts]: Start accepts. Automaton has 151157 states and 305406 transitions. Word has length 418 [2024-11-09 19:25:36,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:36,980 INFO L471 AbstractCegarLoop]: Abstraction has 151157 states and 305406 transitions. [2024-11-09 19:25:36,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 19:25:36,980 INFO L276 IsEmpty]: Start isEmpty. Operand 151157 states and 305406 transitions. [2024-11-09 19:25:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2024-11-09 19:25:36,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:36,991 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:36,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:25:36,991 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:36,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash 895150654, now seen corresponding path program 1 times [2024-11-09 19:25:36,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:36,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741539187] [2024-11-09 19:25:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:36,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 113 proven. 326 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-09 19:25:37,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:37,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741539187] [2024-11-09 19:25:37,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741539187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:25:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464724733] [2024-11-09 19:25:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:37,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:25:37,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:25:37,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:25:37,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:25:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:37,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:25:37,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:25:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-09 19:25:37,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:25:37,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464724733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:37,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:25:37,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 19:25:37,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209925654] [2024-11-09 19:25:37,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:37,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:37,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:37,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:37,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:25:37,821 INFO L87 Difference]: Start difference. First operand 151157 states and 305406 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 19:25:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:42,295 INFO L93 Difference]: Finished difference Result 321864 states and 650461 transitions. [2024-11-09 19:25:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 452 [2024-11-09 19:25:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:42,563 INFO L225 Difference]: With dead ends: 321864 [2024-11-09 19:25:42,563 INFO L226 Difference]: Without dead ends: 171461 [2024-11-09 19:25:42,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:25:42,630 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 1402 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 4325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:42,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 1584 Invalid, 4325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 3629 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:25:42,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171461 states. [2024-11-09 19:25:44,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171461 to 164693. [2024-11-09 19:25:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164693 states, 164692 states have (on average 2.0099701260534815) internal successors, (331026), 164692 states have internal predecessors, (331026), 0 states have call successors, (0), 0 states 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 19:25:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164693 states to 164693 states and 331026 transitions. [2024-11-09 19:25:45,274 INFO L78 Accepts]: Start accepts. Automaton has 164693 states and 331026 transitions. Word has length 452 [2024-11-09 19:25:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:45,275 INFO L471 AbstractCegarLoop]: Abstraction has 164693 states and 331026 transitions. [2024-11-09 19:25:45,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 19:25:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 164693 states and 331026 transitions. [2024-11-09 19:25:45,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-09 19:25:45,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:45,283 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2024-11-09 19:25:45,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 19:25:45,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 19:25:45,484 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:45,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:45,484 INFO L85 PathProgramCache]: Analyzing trace with hash 936952945, now seen corresponding path program 1 times [2024-11-09 19:25:45,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:45,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790119645] [2024-11-09 19:25:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:45,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 19:25:45,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:45,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790119645] [2024-11-09 19:25:45,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790119645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:45,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:45,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:45,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174096634] [2024-11-09 19:25:45,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:45,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:45,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:45,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:45,773 INFO L87 Difference]: Start difference. First operand 164693 states and 331026 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)