./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label21.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label21.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 094be3bd22098479b0cd50c57f93c246c7d8c744192a211aacece1f30e4af2db --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:51:52,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:51:52,649 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:51:52,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:51:52,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:51:52,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:51:52,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:51:52,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:51:52,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:51:52,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:51:52,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:51:52,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:51:52,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:51:52,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:51:52,687 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:51:52,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:51:52,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:51:52,688 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:51:52,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:51:52,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:51:52,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:51:52,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:51:52,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:51:52,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:51:52,694 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:51:52,694 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:51:52,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:51:52,694 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:51:52,695 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:51:52,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:51:52,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:51:52,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:51:52,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:51:52,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:51:52,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:51:52,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:51:52,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:51:52,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:51:52,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:51:52,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:51:52,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:51:52,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:51:52,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 094be3bd22098479b0cd50c57f93c246c7d8c744192a211aacece1f30e4af2db [2024-11-09 19:51:52,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:51:52,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:51:52,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:51:52,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:51:52,976 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:51:52,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label21.c [2024-11-09 19:51:54,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:51:54,819 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:51:54,819 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label21.c [2024-11-09 19:51:54,843 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b8d6708/326a0bdc7e344cea8fdd365c411e4a41/FLAG423294b8e [2024-11-09 19:51:54,860 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b8d6708/326a0bdc7e344cea8fdd365c411e4a41 [2024-11-09 19:51:54,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:51:54,864 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:51:54,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:51:54,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:51:54,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:51:54,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:51:54" (1/1) ... [2024-11-09 19:51:54,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573ab0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:54, skipping insertion in model container [2024-11-09 19:51:54,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:51:54" (1/1) ... [2024-11-09 19:51:54,951 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:51:55,213 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label21.c[8748,8761] [2024-11-09 19:51:55,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:51:55,699 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:51:55,730 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label21.c[8748,8761] [2024-11-09 19:51:56,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:51:56,089 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:51:56,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56 WrapperNode [2024-11-09 19:51:56,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:51:56,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:51:56,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:51:56,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:51:56,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,334 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:51:56,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:51:56,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:51:56,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:51:56,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:51:56,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,384 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,613 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:51:56,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,761 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:51:56,857 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:51:56,857 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:51:56,857 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:51:56,858 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (1/1) ... [2024-11-09 19:51:56,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:51:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:51:56,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:51:56,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:51:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:51:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:51:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:51:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:51:56,995 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:51:56,996 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:52:00,966 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:52:01,234 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:52:01,235 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:52:01,262 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:52:01,262 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:52:01,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:52:01 BoogieIcfgContainer [2024-11-09 19:52:01,263 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:52:01,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:52:01,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:52:01,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:52:01,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:51:54" (1/3) ... [2024-11-09 19:52:01,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a29f396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:52:01, skipping insertion in model container [2024-11-09 19:52:01,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:56" (2/3) ... [2024-11-09 19:52:01,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a29f396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:52:01, skipping insertion in model container [2024-11-09 19:52:01,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:52:01" (3/3) ... [2024-11-09 19:52:01,274 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label21.c [2024-11-09 19:52:01,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:52:01,292 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:52:01,385 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:52:01,393 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;@1a65f435, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:52:01,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:52:01,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 19:52:01,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:01,410 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:01,410 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:01,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:01,415 INFO L85 PathProgramCache]: Analyzing trace with hash -391212217, now seen corresponding path program 1 times [2024-11-09 19:52:01,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:01,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301725799] [2024-11-09 19:52:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:01,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:01,876 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 19:52:01,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:01,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301725799] [2024-11-09 19:52:01,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301725799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:01,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:01,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:52:01,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404633715] [2024-11-09 19:52:01,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:01,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:01,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:01,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:01,917 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:05,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:05,179 INFO L93 Difference]: Finished difference Result 1673 states and 4141 transitions. [2024-11-09 19:52:05,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:05,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-09 19:52:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:05,199 INFO L225 Difference]: With dead ends: 1673 [2024-11-09 19:52:05,199 INFO L226 Difference]: Without dead ends: 1001 [2024-11-09 19:52:05,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:05,209 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 844 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:05,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 279 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:52:05,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2024-11-09 19:52:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 985. [2024-11-09 19:52:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 2.432926829268293) internal successors, (2394), 984 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 2394 transitions. [2024-11-09 19:52:05,307 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 2394 transitions. Word has length 61 [2024-11-09 19:52:05,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:05,307 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 2394 transitions. [2024-11-09 19:52:05,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 2394 transitions. [2024-11-09 19:52:05,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-09 19:52:05,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:05,312 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:05,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:52:05,313 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:05,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:05,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1824206431, now seen corresponding path program 1 times [2024-11-09 19:52:05,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:05,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392099052] [2024-11-09 19:52:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:05,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392099052] [2024-11-09 19:52:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392099052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:05,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:52:05,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896145530] [2024-11-09 19:52:05,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:05,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:05,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:05,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:05,528 INFO L87 Difference]: Start difference. First operand 985 states and 2394 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:08,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:08,351 INFO L93 Difference]: Finished difference Result 2848 states and 7038 transitions. [2024-11-09 19:52:08,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:08,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2024-11-09 19:52:08,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:08,360 INFO L225 Difference]: With dead ends: 2848 [2024-11-09 19:52:08,360 INFO L226 Difference]: Without dead ends: 1865 [2024-11-09 19:52:08,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:08,363 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 763 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:08,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 506 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 19:52:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2024-11-09 19:52:08,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1859. [2024-11-09 19:52:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 2.2583423035522068) internal successors, (4196), 1858 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 4196 transitions. [2024-11-09 19:52:08,406 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 4196 transitions. Word has length 127 [2024-11-09 19:52:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:08,406 INFO L471 AbstractCegarLoop]: Abstraction has 1859 states and 4196 transitions. [2024-11-09 19:52:08,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 4196 transitions. [2024-11-09 19:52:08,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-09 19:52:08,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:08,411 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:08,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:52:08,412 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:08,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:08,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2081140767, now seen corresponding path program 1 times [2024-11-09 19:52:08,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:08,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836019150] [2024-11-09 19:52:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:08,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:08,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:08,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836019150] [2024-11-09 19:52:08,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836019150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:08,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:08,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:52:08,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042929034] [2024-11-09 19:52:08,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:08,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:08,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:08,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:08,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:08,725 INFO L87 Difference]: Start difference. First operand 1859 states and 4196 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:11,177 INFO L93 Difference]: Finished difference Result 4150 states and 9270 transitions. [2024-11-09 19:52:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2024-11-09 19:52:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:11,190 INFO L225 Difference]: With dead ends: 4150 [2024-11-09 19:52:11,191 INFO L226 Difference]: Without dead ends: 2293 [2024-11-09 19:52:11,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:11,195 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 719 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 2109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:11,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 502 Invalid, 2109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 19:52:11,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2024-11-09 19:52:11,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2289. [2024-11-09 19:52:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2288 states have (on average 2.208041958041958) internal successors, (5052), 2288 states have internal predecessors, (5052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:11,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 5052 transitions. [2024-11-09 19:52:11,243 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 5052 transitions. Word has length 137 [2024-11-09 19:52:11,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:11,244 INFO L471 AbstractCegarLoop]: Abstraction has 2289 states and 5052 transitions. [2024-11-09 19:52:11,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:11,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 5052 transitions. [2024-11-09 19:52:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-09 19:52:11,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:11,247 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:11,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:52:11,247 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:11,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1679747075, now seen corresponding path program 1 times [2024-11-09 19:52:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:11,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001045000] [2024-11-09 19:52:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:11,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:11,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:11,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001045000] [2024-11-09 19:52:11,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001045000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:11,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:11,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:52:11,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64060908] [2024-11-09 19:52:11,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:11,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:11,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:11,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:11,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:11,408 INFO L87 Difference]: Start difference. First operand 2289 states and 5052 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:13,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:13,995 INFO L93 Difference]: Finished difference Result 6735 states and 14975 transitions. [2024-11-09 19:52:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:13,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2024-11-09 19:52:13,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:14,013 INFO L225 Difference]: With dead ends: 6735 [2024-11-09 19:52:14,013 INFO L226 Difference]: Without dead ends: 4448 [2024-11-09 19:52:14,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:14,022 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 744 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:14,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 596 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 19:52:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2024-11-09 19:52:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4444. [2024-11-09 19:52:14,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4444 states, 4443 states have (on average 2.0722484807562456) internal successors, (9207), 4443 states have internal predecessors, (9207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 9207 transitions. [2024-11-09 19:52:14,112 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 9207 transitions. Word has length 148 [2024-11-09 19:52:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:14,114 INFO L471 AbstractCegarLoop]: Abstraction has 4444 states and 9207 transitions. [2024-11-09 19:52:14,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 9207 transitions. [2024-11-09 19:52:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-09 19:52:14,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:14,118 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:14,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:52:14,119 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:14,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:14,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1570799626, now seen corresponding path program 1 times [2024-11-09 19:52:14,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:14,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060502053] [2024-11-09 19:52:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:14,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 115 proven. 63 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 19:52:14,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:14,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060502053] [2024-11-09 19:52:14,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060502053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:14,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850680733] [2024-11-09 19:52:14,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:14,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:14,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:14,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:52:14,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:52:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:14,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:52:14,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:52:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 19:52:14,872 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:52:14,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850680733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:14,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:52:14,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:52:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130778796] [2024-11-09 19:52:14,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:14,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:14,875 INFO L87 Difference]: Start difference. First operand 4444 states and 9207 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:17,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:17,291 INFO L93 Difference]: Finished difference Result 10612 states and 22356 transitions. [2024-11-09 19:52:17,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:17,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 198 [2024-11-09 19:52:17,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:17,316 INFO L225 Difference]: With dead ends: 10612 [2024-11-09 19:52:17,316 INFO L226 Difference]: Without dead ends: 6170 [2024-11-09 19:52:17,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:17,325 INFO L432 NwaCegarLoop]: 1168 mSDtfsCounter, 805 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:17,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1238 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:52:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2024-11-09 19:52:17,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6168. [2024-11-09 19:52:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6168 states, 6167 states have (on average 2.0536727744446246) internal successors, (12665), 6167 states have internal predecessors, (12665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 12665 transitions. [2024-11-09 19:52:17,447 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 12665 transitions. Word has length 198 [2024-11-09 19:52:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:17,448 INFO L471 AbstractCegarLoop]: Abstraction has 6168 states and 12665 transitions. [2024-11-09 19:52:17,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 12665 transitions. [2024-11-09 19:52:17,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-09 19:52:17,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:17,452 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:17,470 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 19:52:17,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:17,657 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:17,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1518044668, now seen corresponding path program 1 times [2024-11-09 19:52:17,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:17,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098041859] [2024-11-09 19:52:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:17,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 19:52:17,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:17,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098041859] [2024-11-09 19:52:17,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098041859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:17,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:17,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:52:17,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162596470] [2024-11-09 19:52:17,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:17,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:17,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:17,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:17,908 INFO L87 Difference]: Start difference. First operand 6168 states and 12665 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:20,020 INFO L93 Difference]: Finished difference Result 17455 states and 36096 transitions. [2024-11-09 19:52:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:20,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 204 [2024-11-09 19:52:20,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:20,056 INFO L225 Difference]: With dead ends: 17455 [2024-11-09 19:52:20,057 INFO L226 Difference]: Without dead ends: 10007 [2024-11-09 19:52:20,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:20,068 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 745 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:20,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 591 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:52:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10007 states. [2024-11-09 19:52:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10007 to 7443. [2024-11-09 19:52:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7443 states, 7442 states have (on average 1.9700349368449341) internal successors, (14661), 7442 states have internal predecessors, (14661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 14661 transitions. [2024-11-09 19:52:20,316 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 14661 transitions. Word has length 204 [2024-11-09 19:52:20,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:20,317 INFO L471 AbstractCegarLoop]: Abstraction has 7443 states and 14661 transitions. [2024-11-09 19:52:20,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:20,318 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 14661 transitions. [2024-11-09 19:52:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-09 19:52:20,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:20,324 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:20,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:52:20,324 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:20,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:20,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1077625307, now seen corresponding path program 1 times [2024-11-09 19:52:20,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:20,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076234834] [2024-11-09 19:52:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:20,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:52:20,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076234834] [2024-11-09 19:52:20,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076234834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:20,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:20,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:20,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158400580] [2024-11-09 19:52:20,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:20,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:20,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:20,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:20,530 INFO L87 Difference]: Start difference. First operand 7443 states and 14661 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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 19:52:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:22,684 INFO L93 Difference]: Finished difference Result 19140 states and 37991 transitions. [2024-11-09 19:52:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:22,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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 217 [2024-11-09 19:52:22,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:22,708 INFO L225 Difference]: With dead ends: 19140 [2024-11-09 19:52:22,708 INFO L226 Difference]: Without dead ends: 11698 [2024-11-09 19:52:22,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:22,718 INFO L432 NwaCegarLoop]: 397 mSDtfsCounter, 745 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:22,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 461 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:52:22,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11698 states. [2024-11-09 19:52:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11698 to 7413. [2024-11-09 19:52:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7413 states, 7412 states have (on average 1.971937398812736) internal successors, (14616), 7412 states have internal predecessors, (14616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 14616 transitions. [2024-11-09 19:52:22,985 INFO L78 Accepts]: Start accepts. Automaton has 7413 states and 14616 transitions. Word has length 217 [2024-11-09 19:52:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:22,986 INFO L471 AbstractCegarLoop]: Abstraction has 7413 states and 14616 transitions. [2024-11-09 19:52:22,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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 19:52:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 7413 states and 14616 transitions. [2024-11-09 19:52:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-09 19:52:22,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:22,991 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:22,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:52:22,991 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:22,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:22,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1196210331, now seen corresponding path program 1 times [2024-11-09 19:52:22,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:22,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364823703] [2024-11-09 19:52:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:22,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 19:52:23,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:23,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364823703] [2024-11-09 19:52:23,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364823703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:23,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:23,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:23,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753136028] [2024-11-09 19:52:23,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:23,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:23,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:23,243 INFO L87 Difference]: Start difference. First operand 7413 states and 14616 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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 19:52:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:25,580 INFO L93 Difference]: Finished difference Result 19086 states and 37905 transitions. [2024-11-09 19:52:25,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:25,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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 228 [2024-11-09 19:52:25,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:25,602 INFO L225 Difference]: With dead ends: 19086 [2024-11-09 19:52:25,602 INFO L226 Difference]: Without dead ends: 10397 [2024-11-09 19:52:25,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:25,613 INFO L432 NwaCegarLoop]: 1176 mSDtfsCounter, 741 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:25,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1247 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:52:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10397 states. [2024-11-09 19:52:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10397 to 10397. [2024-11-09 19:52:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10397 states, 10396 states have (on average 1.947575990765679) internal successors, (20247), 10396 states have internal predecessors, (20247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10397 states to 10397 states and 20247 transitions. [2024-11-09 19:52:25,860 INFO L78 Accepts]: Start accepts. Automaton has 10397 states and 20247 transitions. Word has length 228 [2024-11-09 19:52:25,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:25,861 INFO L471 AbstractCegarLoop]: Abstraction has 10397 states and 20247 transitions. [2024-11-09 19:52:25,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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 19:52:25,862 INFO L276 IsEmpty]: Start isEmpty. Operand 10397 states and 20247 transitions. [2024-11-09 19:52:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-09 19:52:25,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:25,866 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2024-11-09 19:52:25,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:52:25,867 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:25,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:25,868 INFO L85 PathProgramCache]: Analyzing trace with hash 273457268, now seen corresponding path program 1 times [2024-11-09 19:52:25,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:25,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950149628] [2024-11-09 19:52:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:26,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:26,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950149628] [2024-11-09 19:52:26,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950149628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:26,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:26,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:26,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497500283] [2024-11-09 19:52:26,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:26,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:26,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:26,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:26,082 INFO L87 Difference]: Start difference. First operand 10397 states and 20247 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:28,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:28,153 INFO L93 Difference]: Finished difference Result 25469 states and 49994 transitions. [2024-11-09 19:52:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:28,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2024-11-09 19:52:28,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:28,177 INFO L225 Difference]: With dead ends: 25469 [2024-11-09 19:52:28,178 INFO L226 Difference]: Without dead ends: 15074 [2024-11-09 19:52:28,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:28,190 INFO L432 NwaCegarLoop]: 1066 mSDtfsCounter, 825 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:28,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1121 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:52:28,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15074 states. [2024-11-09 19:52:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15074 to 14648. [2024-11-09 19:52:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14648 states, 14647 states have (on average 1.940055984160579) internal successors, (28416), 14647 states have internal predecessors, (28416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14648 states to 14648 states and 28416 transitions. [2024-11-09 19:52:28,526 INFO L78 Accepts]: Start accepts. Automaton has 14648 states and 28416 transitions. Word has length 242 [2024-11-09 19:52:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:28,527 INFO L471 AbstractCegarLoop]: Abstraction has 14648 states and 28416 transitions. [2024-11-09 19:52:28,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 14648 states and 28416 transitions. [2024-11-09 19:52:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-11-09 19:52:28,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:28,534 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:28,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:52:28,534 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:28,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:28,535 INFO L85 PathProgramCache]: Analyzing trace with hash 510951666, now seen corresponding path program 1 times [2024-11-09 19:52:28,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:28,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287511553] [2024-11-09 19:52:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:28,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-09 19:52:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287511553] [2024-11-09 19:52:28,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287511553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:28,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758548324] [2024-11-09 19:52:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:28,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:28,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:28,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:28,724 INFO L87 Difference]: Start difference. First operand 14648 states and 28416 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 19:52:30,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:30,759 INFO L93 Difference]: Finished difference Result 34837 states and 67928 transitions. [2024-11-09 19:52:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:30,760 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 336 [2024-11-09 19:52:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:30,792 INFO L225 Difference]: With dead ends: 34837 [2024-11-09 19:52:30,792 INFO L226 Difference]: Without dead ends: 20191 [2024-11-09 19:52:30,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:30,809 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 798 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 2197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:30,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 356 Invalid, 2197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:52:30,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20191 states. [2024-11-09 19:52:31,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20191 to 18482. [2024-11-09 19:52:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18482 states, 18481 states have (on average 1.9433472214706997) internal successors, (35915), 18481 states have internal predecessors, (35915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18482 states to 18482 states and 35915 transitions. [2024-11-09 19:52:31,195 INFO L78 Accepts]: Start accepts. Automaton has 18482 states and 35915 transitions. Word has length 336 [2024-11-09 19:52:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:31,195 INFO L471 AbstractCegarLoop]: Abstraction has 18482 states and 35915 transitions. [2024-11-09 19:52:31,195 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 19:52:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 18482 states and 35915 transitions. [2024-11-09 19:52:31,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-09 19:52:31,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:31,213 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:31,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:52:31,214 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:31,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:31,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1016606663, now seen corresponding path program 1 times [2024-11-09 19:52:31,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:31,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459655553] [2024-11-09 19:52:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:31,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:52:32,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:32,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459655553] [2024-11-09 19:52:32,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459655553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:32,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:32,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:52:32,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323820921] [2024-11-09 19:52:32,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:32,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:32,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:32,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:32,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:32,292 INFO L87 Difference]: Start difference. First operand 18482 states and 35915 transitions. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:35,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:35,634 INFO L93 Difference]: Finished difference Result 48075 states and 93820 transitions. [2024-11-09 19:52:35,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:35,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 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 499 [2024-11-09 19:52:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:35,684 INFO L225 Difference]: With dead ends: 48075 [2024-11-09 19:52:35,684 INFO L226 Difference]: Without dead ends: 29595 [2024-11-09 19:52:35,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:35,705 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 1961 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2958 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 3349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:35,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1961 Valid, 297 Invalid, 3349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2958 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:52:35,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29595 states. [2024-11-09 19:52:36,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29595 to 27016. [2024-11-09 19:52:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27016 states, 27015 states have (on average 1.9498426799925968) internal successors, (52675), 27015 states have internal predecessors, (52675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27016 states to 27016 states and 52675 transitions. [2024-11-09 19:52:36,433 INFO L78 Accepts]: Start accepts. Automaton has 27016 states and 52675 transitions. Word has length 499 [2024-11-09 19:52:36,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:36,434 INFO L471 AbstractCegarLoop]: Abstraction has 27016 states and 52675 transitions. [2024-11-09 19:52:36,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 27016 states and 52675 transitions. [2024-11-09 19:52:36,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-11-09 19:52:36,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:36,455 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:36,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:52:36,455 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:36,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:36,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1068863363, now seen corresponding path program 1 times [2024-11-09 19:52:36,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:36,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434502812] [2024-11-09 19:52:36,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:36,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 19:52:36,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:36,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434502812] [2024-11-09 19:52:36,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434502812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:36,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:36,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:36,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146649951] [2024-11-09 19:52:36,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:36,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:36,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:36,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:36,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:36,845 INFO L87 Difference]: Start difference. First operand 27016 states and 52675 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:39,154 INFO L93 Difference]: Finished difference Result 51893 states and 101168 transitions. [2024-11-09 19:52:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:39,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 507 [2024-11-09 19:52:39,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:39,189 INFO L225 Difference]: With dead ends: 51893 [2024-11-09 19:52:39,190 INFO L226 Difference]: Without dead ends: 24879 [2024-11-09 19:52:39,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:39,205 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 810 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:39,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 325 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:52:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24879 states. [2024-11-09 19:52:39,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24879 to 23593. [2024-11-09 19:52:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23593 states, 23592 states have (on average 1.9437097321125805) internal successors, (45856), 23592 states have internal predecessors, (45856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23593 states to 23593 states and 45856 transitions. [2024-11-09 19:52:39,623 INFO L78 Accepts]: Start accepts. Automaton has 23593 states and 45856 transitions. Word has length 507 [2024-11-09 19:52:39,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:39,624 INFO L471 AbstractCegarLoop]: Abstraction has 23593 states and 45856 transitions. [2024-11-09 19:52:39,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 23593 states and 45856 transitions. [2024-11-09 19:52:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-11-09 19:52:39,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:39,645 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:39,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:52:39,645 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:39,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1405253347, now seen corresponding path program 1 times [2024-11-09 19:52:39,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:39,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002317888] [2024-11-09 19:52:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-09 19:52:40,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:40,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002317888] [2024-11-09 19:52:40,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002317888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:40,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:40,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:40,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238639225] [2024-11-09 19:52:40,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:40,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:40,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:40,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:40,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:40,129 INFO L87 Difference]: Start difference. First operand 23593 states and 45856 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:42,121 INFO L93 Difference]: Finished difference Result 47176 states and 91702 transitions. [2024-11-09 19:52:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:42,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 531 [2024-11-09 19:52:42,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:42,154 INFO L225 Difference]: With dead ends: 47176 [2024-11-09 19:52:42,154 INFO L226 Difference]: Without dead ends: 23585 [2024-11-09 19:52:42,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:42,171 INFO L432 NwaCegarLoop]: 1037 mSDtfsCounter, 802 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:42,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1107 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:52:42,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23585 states. [2024-11-09 19:52:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23585 to 23583. [2024-11-09 19:52:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23583 states, 23582 states have (on average 1.912942074463574) internal successors, (45111), 23582 states have internal predecessors, (45111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23583 states to 23583 states and 45111 transitions. [2024-11-09 19:52:42,642 INFO L78 Accepts]: Start accepts. Automaton has 23583 states and 45111 transitions. Word has length 531 [2024-11-09 19:52:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:42,644 INFO L471 AbstractCegarLoop]: Abstraction has 23583 states and 45111 transitions. [2024-11-09 19:52:42,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 23583 states and 45111 transitions. [2024-11-09 19:52:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2024-11-09 19:52:42,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:42,670 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:42,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:52:42,670 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:42,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:42,671 INFO L85 PathProgramCache]: Analyzing trace with hash 63611124, now seen corresponding path program 1 times [2024-11-09 19:52:42,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:42,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481377175] [2024-11-09 19:52:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:42,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:52:43,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:43,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481377175] [2024-11-09 19:52:43,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481377175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:43,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:43,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:52:43,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687860954] [2024-11-09 19:52:43,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:43,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:43,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:43,428 INFO L87 Difference]: Start difference. First operand 23583 states and 45111 transitions. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:46,864 INFO L93 Difference]: Finished difference Result 59990 states and 114778 transitions. [2024-11-09 19:52:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:46,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 557 [2024-11-09 19:52:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:46,907 INFO L225 Difference]: With dead ends: 59990 [2024-11-09 19:52:46,908 INFO L226 Difference]: Without dead ends: 35131 [2024-11-09 19:52:46,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:46,919 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 1270 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 4254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:46,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 260 Invalid, 4254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:52:46,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35131 states. [2024-11-09 19:52:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35131 to 33824. [2024-11-09 19:52:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33824 states, 33823 states have (on average 1.9146734470626496) internal successors, (64760), 33823 states have internal predecessors, (64760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33824 states to 33824 states and 64760 transitions. [2024-11-09 19:52:47,445 INFO L78 Accepts]: Start accepts. Automaton has 33824 states and 64760 transitions. Word has length 557 [2024-11-09 19:52:47,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:47,446 INFO L471 AbstractCegarLoop]: Abstraction has 33824 states and 64760 transitions. [2024-11-09 19:52:47,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 33824 states and 64760 transitions. [2024-11-09 19:52:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2024-11-09 19:52:47,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:47,484 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:47,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:52:47,484 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:47,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:47,485 INFO L85 PathProgramCache]: Analyzing trace with hash -37063379, now seen corresponding path program 1 times [2024-11-09 19:52:47,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:47,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545749136] [2024-11-09 19:52:47,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:47,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 336 proven. 83 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 19:52:48,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545749136] [2024-11-09 19:52:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545749136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483423807] [2024-11-09 19:52:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:48,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:48,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:48,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:52:48,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:52:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:48,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:52:48,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:52:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:52:49,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:52:49,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483423807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:49,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:52:49,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2024-11-09 19:52:49,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553844183] [2024-11-09 19:52:49,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:49,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:49,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:49,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:49,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:49,336 INFO L87 Difference]: Start difference. First operand 33824 states and 64760 transitions. Second operand has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:53,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:53,246 INFO L93 Difference]: Finished difference Result 88599 states and 169844 transitions. [2024-11-09 19:52:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:53,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 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 623 [2024-11-09 19:52:53,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:53,308 INFO L225 Difference]: With dead ends: 88599 [2024-11-09 19:52:53,309 INFO L226 Difference]: Without dead ends: 53064 [2024-11-09 19:52:53,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 621 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 19:52:53,323 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 1337 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 3994 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 4624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 3994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:53,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 177 Invalid, 4624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 3994 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:52:53,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53064 states. [2024-11-09 19:52:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53064 to 48759. [2024-11-09 19:52:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48759 states, 48758 states have (on average 1.9164649903605562) internal successors, (93443), 48758 states have internal predecessors, (93443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48759 states to 48759 states and 93443 transitions. [2024-11-09 19:52:54,044 INFO L78 Accepts]: Start accepts. Automaton has 48759 states and 93443 transitions. Word has length 623 [2024-11-09 19:52:54,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:54,044 INFO L471 AbstractCegarLoop]: Abstraction has 48759 states and 93443 transitions. [2024-11-09 19:52:54,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 48759 states and 93443 transitions. [2024-11-09 19:52:54,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2024-11-09 19:52:54,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:54,081 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:54,098 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 19:52:54,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 19:52:54,282 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:54,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1560396781, now seen corresponding path program 1 times [2024-11-09 19:52:54,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:54,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899880644] [2024-11-09 19:52:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:54,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-09 19:52:55,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899880644] [2024-11-09 19:52:55,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899880644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:55,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:55,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:55,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442596532] [2024-11-09 19:52:55,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:55,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:55,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:55,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:55,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:55,126 INFO L87 Difference]: Start difference. First operand 48759 states and 93443 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:57,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:57,404 INFO L93 Difference]: Finished difference Result 105650 states and 202443 transitions. [2024-11-09 19:52:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:57,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 640 [2024-11-09 19:52:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:57,470 INFO L225 Difference]: With dead ends: 105650 [2024-11-09 19:52:57,470 INFO L226 Difference]: Without dead ends: 56893 [2024-11-09 19:52:57,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:57,491 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 780 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:57,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 376 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:52:57,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56893 states. [2024-11-09 19:52:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56893 to 51317. [2024-11-09 19:52:58,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51317 states, 51316 states have (on average 1.9151726557019253) internal successors, (98279), 51316 states have internal predecessors, (98279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:58,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51317 states to 51317 states and 98279 transitions. [2024-11-09 19:52:58,128 INFO L78 Accepts]: Start accepts. Automaton has 51317 states and 98279 transitions. Word has length 640 [2024-11-09 19:52:58,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:58,129 INFO L471 AbstractCegarLoop]: Abstraction has 51317 states and 98279 transitions. [2024-11-09 19:52:58,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 51317 states and 98279 transitions. [2024-11-09 19:52:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2024-11-09 19:52:58,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:58,438 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:58,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:52:58,442 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:58,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1915549464, now seen corresponding path program 1 times [2024-11-09 19:52:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:58,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328349466] [2024-11-09 19:52:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:58,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2024-11-09 19:52:58,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:58,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328349466] [2024-11-09 19:52:58,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328349466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:58,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:58,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:58,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15545244] [2024-11-09 19:52:58,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:58,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:58,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:58,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:58,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:58,826 INFO L87 Difference]: Start difference. First operand 51317 states and 98279 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 19:53:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:01,210 INFO L93 Difference]: Finished difference Result 109454 states and 209951 transitions. [2024-11-09 19:53:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:01,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 651 [2024-11-09 19:53:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:01,279 INFO L225 Difference]: With dead ends: 109454 [2024-11-09 19:53:01,279 INFO L226 Difference]: Without dead ends: 56430 [2024-11-09 19:53:01,311 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 19:53:01,312 INFO L432 NwaCegarLoop]: 1018 mSDtfsCounter, 860 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:01,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1065 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:53:01,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56430 states. [2024-11-09 19:53:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56430 to 55146. [2024-11-09 19:53:02,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55146 states, 55145 states have (on average 1.9082963097288965) internal successors, (105233), 55145 states have internal predecessors, (105233), 0 states have call successors, (0), 0 states 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 19:53:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55146 states to 55146 states and 105233 transitions. [2024-11-09 19:53:02,350 INFO L78 Accepts]: Start accepts. Automaton has 55146 states and 105233 transitions. Word has length 651 [2024-11-09 19:53:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:02,350 INFO L471 AbstractCegarLoop]: Abstraction has 55146 states and 105233 transitions. [2024-11-09 19:53:02,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 19:53:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 55146 states and 105233 transitions. [2024-11-09 19:53:02,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2024-11-09 19:53:02,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:02,388 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:02,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:53:02,388 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:02,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1922399318, now seen corresponding path program 1 times [2024-11-09 19:53:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:02,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635230324] [2024-11-09 19:53:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:02,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2024-11-09 19:53:02,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:02,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635230324] [2024-11-09 19:53:02,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635230324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:02,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:02,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:02,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319310674] [2024-11-09 19:53:02,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:02,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:02,936 INFO L87 Difference]: Start difference. First operand 55146 states and 105233 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 19:53:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:05,473 INFO L93 Difference]: Finished difference Result 117959 states and 225170 transitions. [2024-11-09 19:53:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 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 725 [2024-11-09 19:53:05,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:05,554 INFO L225 Difference]: With dead ends: 117959 [2024-11-09 19:53:05,554 INFO L226 Difference]: Without dead ends: 61096 [2024-11-09 19:53:05,566 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 19:53:05,567 INFO L432 NwaCegarLoop]: 1100 mSDtfsCounter, 817 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:05,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 1158 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:53:05,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61096 states. [2024-11-09 19:53:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61096 to 55974. [2024-11-09 19:53:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55974 states, 55973 states have (on average 1.899969628213603) internal successors, (106347), 55973 states have internal predecessors, (106347), 0 states have call successors, (0), 0 states 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 19:53:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55974 states to 55974 states and 106347 transitions. [2024-11-09 19:53:06,349 INFO L78 Accepts]: Start accepts. Automaton has 55974 states and 106347 transitions. Word has length 725 [2024-11-09 19:53:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:06,350 INFO L471 AbstractCegarLoop]: Abstraction has 55974 states and 106347 transitions. [2024-11-09 19:53:06,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 19:53:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 55974 states and 106347 transitions. [2024-11-09 19:53:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2024-11-09 19:53:06,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:06,378 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:06,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 19:53:06,378 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:06,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:06,379 INFO L85 PathProgramCache]: Analyzing trace with hash -439628335, now seen corresponding path program 1 times [2024-11-09 19:53:06,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:06,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209885296] [2024-11-09 19:53:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:06,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 467 proven. 143 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 19:53:08,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209885296] [2024-11-09 19:53:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209885296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:53:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739212719] [2024-11-09 19:53:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:08,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:53:08,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:53:08,021 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 19:53:08,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process