./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label53.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/Problem19_label53.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 0af5b5ff05c944d90c9c04f2b0b303061855de64287f50193b15b0ec54d59a9c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 20:07:11,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 20:07:11,804 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 20:07:11,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 20:07:11,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 20:07:11,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 20:07:11,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 20:07:11,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 20:07:11,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 20:07:11,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 20:07:11,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 20:07:11,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 20:07:11,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 20:07:11,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 20:07:11,836 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 20:07:11,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 20:07:11,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 20:07:11,836 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 20:07:11,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 20:07:11,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 20:07:11,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 20:07:11,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 20:07:11,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 20:07:11,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 20:07:11,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 20:07:11,841 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 20:07:11,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 20:07:11,841 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 20:07:11,841 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 20:07:11,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 20:07:11,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 20:07:11,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 20:07:11,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 20:07:11,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 20:07:11,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 20:07:11,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 20:07:11,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 20:07:11,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 20:07:11,843 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 20:07:11,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 20:07:11,844 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 20:07:11,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 20:07:11,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0af5b5ff05c944d90c9c04f2b0b303061855de64287f50193b15b0ec54d59a9c [2024-11-09 20:07:12,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 20:07:12,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 20:07:12,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 20:07:12,054 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 20:07:12,055 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 20:07:12,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label53.c [2024-11-09 20:07:13,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 20:07:13,866 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 20:07:13,867 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label53.c [2024-11-09 20:07:13,901 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5126c9f8/f821725e0a85406cb2d21fff3fe3e160/FLAG4d44061c1 [2024-11-09 20:07:13,951 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5126c9f8/f821725e0a85406cb2d21fff3fe3e160 [2024-11-09 20:07:13,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 20:07:13,955 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 20:07:13,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 20:07:13,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 20:07:13,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 20:07:13,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:07:13" (1/1) ... [2024-11-09 20:07:13,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c6ef48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:13, skipping insertion in model container [2024-11-09 20:07:13,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:07:13" (1/1) ... [2024-11-09 20:07:14,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 20:07:14,310 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/Problem19_label53.c[1928,1941] [2024-11-09 20:07:15,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 20:07:15,283 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 20:07:15,298 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/Problem19_label53.c[1928,1941] [2024-11-09 20:07:15,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 20:07:15,884 INFO L204 MainTranslator]: Completed translation [2024-11-09 20:07:15,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15 WrapperNode [2024-11-09 20:07:15,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 20:07:15,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 20:07:15,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 20:07:15,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 20:07:15,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:15,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:16,848 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9430 [2024-11-09 20:07:16,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 20:07:16,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 20:07:16,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 20:07:16,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 20:07:16,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:16,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:17,066 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:17,299 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 20:07:17,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:17,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:17,608 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:17,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:17,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:17,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:17,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 20:07:17,762 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 20:07:17,762 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 20:07:17,762 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 20:07:17,763 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (1/1) ... [2024-11-09 20:07:17,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 20:07:17,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:07:17,795 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 20:07:17,802 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 20:07:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 20:07:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 20:07:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 20:07:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 20:07:17,897 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 20:07:17,898 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 20:07:25,250 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L6717: havoc calculate_output4_#t~ret14#1; [2024-11-09 20:07:25,250 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3435: havoc calculate_output2_#t~ret12#1; [2024-11-09 20:07:25,251 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1859: havoc calculate_output_#t~ret11#1; [2024-11-09 20:07:25,251 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L8350: havoc calculate_output5_#t~ret15#1; [2024-11-09 20:07:25,251 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L5079: havoc calculate_output3_#t~ret13#1; [2024-11-09 20:07:25,700 INFO L? ?]: Removed 3705 outVars from TransFormulas that were not future-live. [2024-11-09 20:07:25,700 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 20:07:25,739 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 20:07:25,740 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 20:07:25,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 08:07:25 BoogieIcfgContainer [2024-11-09 20:07:25,741 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 20:07:25,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 20:07:25,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 20:07:25,745 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 20:07:25,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:07:13" (1/3) ... [2024-11-09 20:07:25,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f5d6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:07:25, skipping insertion in model container [2024-11-09 20:07:25,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:15" (2/3) ... [2024-11-09 20:07:25,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f5d6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:07:25, skipping insertion in model container [2024-11-09 20:07:25,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 08:07:25" (3/3) ... [2024-11-09 20:07:25,748 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label53.c [2024-11-09 20:07:25,762 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 20:07:25,762 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 20:07:25,855 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 20:07:25,861 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;@5b15c28b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 20:07:25,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 20:07:25,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 1751 states, 1749 states have (on average 2.606060606060606) internal successors, (4558), 1750 states have internal predecessors, (4558), 0 states have call successors, (0), 0 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 20:07:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 20:07:25,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:07:25,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 20:07:25,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:07:25,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:07:25,879 INFO L85 PathProgramCache]: Analyzing trace with hash -545109434, now seen corresponding path program 1 times [2024-11-09 20:07:25,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:07:25,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109634452] [2024-11-09 20:07:25,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:07:25,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:07:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:07:26,103 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 20:07:26,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:07:26,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109634452] [2024-11-09 20:07:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109634452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:07:26,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:07:26,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 20:07:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697874060] [2024-11-09 20:07:26,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:07:26,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 20:07:26,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:07:26,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 20:07:26,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 20:07:26,136 INFO L87 Difference]: Start difference. First operand has 1751 states, 1749 states have (on average 2.606060606060606) internal successors, (4558), 1750 states have internal predecessors, (4558), 0 states have call successors, (0), 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 20:07:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:07:34,402 INFO L93 Difference]: Finished difference Result 4981 states and 13292 transitions. [2024-11-09 20:07:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 20:07:34,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-09 20:07:34,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:07:34,455 INFO L225 Difference]: With dead ends: 4981 [2024-11-09 20:07:34,455 INFO L226 Difference]: Without dead ends: 3166 [2024-11-09 20:07:34,468 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 20:07:34,473 INFO L432 NwaCegarLoop]: 1355 mSDtfsCounter, 2825 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 7250 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 8373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 7250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-09 20:07:34,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2825 Valid, 1528 Invalid, 8373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 7250 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-09 20:07:34,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2024-11-09 20:07:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 3126. [2024-11-09 20:07:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3126 states, 3125 states have (on average 2.45184) internal successors, (7662), 3125 states have internal predecessors, (7662), 0 states have call successors, (0), 0 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 20:07:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 7662 transitions. [2024-11-09 20:07:34,636 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 7662 transitions. Word has length 13 [2024-11-09 20:07:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:07:34,636 INFO L471 AbstractCegarLoop]: Abstraction has 3126 states and 7662 transitions. [2024-11-09 20:07:34,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 20:07:34,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 7662 transitions. [2024-11-09 20:07:34,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 20:07:34,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:07:34,639 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 20:07:34,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 20:07:34,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:07:34,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:07:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash 568839180, now seen corresponding path program 1 times [2024-11-09 20:07:34,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:07:34,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825626421] [2024-11-09 20:07:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:07:34,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:07:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:07:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:07:34,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:07:34,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825626421] [2024-11-09 20:07:34,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825626421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:07:34,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:07:34,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 20:07:34,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151940806] [2024-11-09 20:07:34,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:07:34,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 20:07:34,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:07:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 20:07:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 20:07:34,970 INFO L87 Difference]: Start difference. First operand 3126 states and 7662 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 20:07:46,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:07:46,516 INFO L93 Difference]: Finished difference Result 10384 states and 25636 transitions. [2024-11-09 20:07:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 20:07:46,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-11-09 20:07:46,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:07:46,541 INFO L225 Difference]: With dead ends: 10384 [2024-11-09 20:07:46,542 INFO L226 Difference]: Without dead ends: 7260 [2024-11-09 20:07:46,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 20:07:46,547 INFO L432 NwaCegarLoop]: 700 mSDtfsCounter, 8357 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 10872 mSolverCounterSat, 2736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8357 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 13608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2736 IncrementalHoareTripleChecker+Valid, 10872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2024-11-09 20:07:46,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8357 Valid, 968 Invalid, 13608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2736 Valid, 10872 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2024-11-09 20:07:46,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7260 states. [2024-11-09 20:07:46,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7260 to 7254. [2024-11-09 20:07:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7254 states, 7253 states have (on average 2.3637115676271887) internal successors, (17144), 7253 states have internal predecessors, (17144), 0 states have call successors, (0), 0 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 20:07:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7254 states to 7254 states and 17144 transitions. [2024-11-09 20:07:46,684 INFO L78 Accepts]: Start accepts. Automaton has 7254 states and 17144 transitions. Word has length 85 [2024-11-09 20:07:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:07:46,685 INFO L471 AbstractCegarLoop]: Abstraction has 7254 states and 17144 transitions. [2024-11-09 20:07:46,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 20:07:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 7254 states and 17144 transitions. [2024-11-09 20:07:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-09 20:07:46,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:07:46,691 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 20:07:46,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 20:07:46,693 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:07:46,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:07:46,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1601386962, now seen corresponding path program 1 times [2024-11-09 20:07:46,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:07:46,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917740436] [2024-11-09 20:07:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:07:46,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:07:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:07:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:07:46,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:07:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917740436] [2024-11-09 20:07:46,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917740436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:07:46,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:07:46,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 20:07:46,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315189864] [2024-11-09 20:07:46,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:07:46,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 20:07:46,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:07:46,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 20:07:46,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 20:07:46,995 INFO L87 Difference]: Start difference. First operand 7254 states and 17144 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 20:07:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:07:53,668 INFO L93 Difference]: Finished difference Result 15935 states and 39411 transitions. [2024-11-09 20:07:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 20:07:53,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2024-11-09 20:07:53,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:07:53,711 INFO L225 Difference]: With dead ends: 15935 [2024-11-09 20:07:53,711 INFO L226 Difference]: Without dead ends: 10050 [2024-11-09 20:07:53,722 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 20:07:53,723 INFO L432 NwaCegarLoop]: 4067 mSDtfsCounter, 2809 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 6651 mSolverCounterSat, 1798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2809 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 8449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1798 IncrementalHoareTripleChecker+Valid, 6651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-09 20:07:53,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2809 Valid, 4248 Invalid, 8449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1798 Valid, 6651 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-09 20:07:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10050 states. [2024-11-09 20:07:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10050 to 10006. [2024-11-09 20:07:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10006 states, 10005 states have (on average 2.337631184407796) internal successors, (23388), 10005 states have internal predecessors, (23388), 0 states have call successors, (0), 0 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 20:07:53,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10006 states to 10006 states and 23388 transitions. [2024-11-09 20:07:53,993 INFO L78 Accepts]: Start accepts. Automaton has 10006 states and 23388 transitions. Word has length 221 [2024-11-09 20:07:53,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:07:53,997 INFO L471 AbstractCegarLoop]: Abstraction has 10006 states and 23388 transitions. [2024-11-09 20:07:53,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 20:07:53,998 INFO L276 IsEmpty]: Start isEmpty. Operand 10006 states and 23388 transitions. [2024-11-09 20:07:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-09 20:07:54,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:07:54,004 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 20:07:54,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 20:07:54,004 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:07:54,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:07:54,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1336441278, now seen corresponding path program 1 times [2024-11-09 20:07:54,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:07:54,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992688728] [2024-11-09 20:07:54,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:07:54,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:07:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:07:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 20:07:54,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:07:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992688728] [2024-11-09 20:07:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992688728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:07:54,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:07:54,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 20:07:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789014879] [2024-11-09 20:07:54,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:07:54,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 20:07:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:07:54,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 20:07:54,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 20:07:54,913 INFO L87 Difference]: Start difference. First operand 10006 states and 23388 transitions. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 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 20:08:06,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:08:06,222 INFO L93 Difference]: Finished difference Result 25521 states and 61811 transitions. [2024-11-09 20:08:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 20:08:06,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 290 [2024-11-09 20:08:06,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:08:06,251 INFO L225 Difference]: With dead ends: 25521 [2024-11-09 20:08:06,251 INFO L226 Difference]: Without dead ends: 16883 [2024-11-09 20:08:06,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 20:08:06,265 INFO L432 NwaCegarLoop]: 1800 mSDtfsCounter, 7628 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 14598 mSolverCounterSat, 1331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7628 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 15929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1331 IncrementalHoareTripleChecker+Valid, 14598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2024-11-09 20:08:06,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7628 Valid, 2158 Invalid, 15929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1331 Valid, 14598 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2024-11-09 20:08:06,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16883 states. [2024-11-09 20:08:06,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16883 to 16867. [2024-11-09 20:08:06,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16867 states, 16866 states have (on average 2.214158662397723) internal successors, (37344), 16866 states have internal predecessors, (37344), 0 states have call successors, (0), 0 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 20:08:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16867 states to 16867 states and 37344 transitions. [2024-11-09 20:08:06,521 INFO L78 Accepts]: Start accepts. Automaton has 16867 states and 37344 transitions. Word has length 290 [2024-11-09 20:08:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:08:06,522 INFO L471 AbstractCegarLoop]: Abstraction has 16867 states and 37344 transitions. [2024-11-09 20:08:06,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 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 20:08:06,523 INFO L276 IsEmpty]: Start isEmpty. Operand 16867 states and 37344 transitions. [2024-11-09 20:08:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-09 20:08:06,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:08:06,525 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 20:08:06,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 20:08:06,526 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:08:06,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:08:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash -166534970, now seen corresponding path program 1 times [2024-11-09 20:08:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:08:06,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543262461] [2024-11-09 20:08:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:08:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:08:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:08:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:08:07,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:08:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543262461] [2024-11-09 20:08:07,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543262461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:08:07,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:08:07,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 20:08:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842664331] [2024-11-09 20:08:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:08:07,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 20:08:07,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:08:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 20:08:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 20:08:07,131 INFO L87 Difference]: Start difference. First operand 16867 states and 37344 transitions. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 20:08:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:08:13,772 INFO L93 Difference]: Finished difference Result 31032 states and 69388 transitions. [2024-11-09 20:08:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 20:08:13,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2024-11-09 20:08:13,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:08:13,834 INFO L225 Difference]: With dead ends: 31032 [2024-11-09 20:08:13,837 INFO L226 Difference]: Without dead ends: 16867 [2024-11-09 20:08:13,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 20:08:13,869 INFO L432 NwaCegarLoop]: 1768 mSDtfsCounter, 2441 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 9580 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 9588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-09 20:08:13,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2441 Valid, 1950 Invalid, 9588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9580 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-09 20:08:13,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16867 states. [2024-11-09 20:08:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16867 to 16867. [2024-11-09 20:08:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16867 states, 16866 states have (on average 2.2133878809439107) internal successors, (37331), 16866 states have internal predecessors, (37331), 0 states have call successors, (0), 0 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 20:08:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16867 states to 16867 states and 37331 transitions. [2024-11-09 20:08:14,544 INFO L78 Accepts]: Start accepts. Automaton has 16867 states and 37331 transitions. Word has length 318 [2024-11-09 20:08:14,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:08:14,545 INFO L471 AbstractCegarLoop]: Abstraction has 16867 states and 37331 transitions. [2024-11-09 20:08:14,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 20:08:14,545 INFO L276 IsEmpty]: Start isEmpty. Operand 16867 states and 37331 transitions. [2024-11-09 20:08:14,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-11-09 20:08:14,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:08:14,558 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:14,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 20:08:14,558 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:08:14,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:08:14,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1735781215, now seen corresponding path program 1 times [2024-11-09 20:08:14,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:08:14,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868930480] [2024-11-09 20:08:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:08:14,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:08:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:08:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 20:08:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:08:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868930480] [2024-11-09 20:08:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868930480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:08:15,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:08:15,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 20:08:15,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800909093] [2024-11-09 20:08:15,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:08:15,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 20:08:15,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:08:15,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 20:08:15,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 20:08:15,105 INFO L87 Difference]: Start difference. First operand 16867 states and 37331 transitions. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 2 states have internal predecessors, (503), 0 states have call successors, (0), 0 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 20:08:22,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:08:22,339 INFO L93 Difference]: Finished difference Result 44852 states and 100981 transitions. [2024-11-09 20:08:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 20:08:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 2 states have internal predecessors, (503), 0 states have call successors, (0), 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 570 [2024-11-09 20:08:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:08:22,402 INFO L225 Difference]: With dead ends: 44852 [2024-11-09 20:08:22,402 INFO L226 Difference]: Without dead ends: 30719 [2024-11-09 20:08:22,423 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 20:08:22,424 INFO L432 NwaCegarLoop]: 720 mSDtfsCounter, 3402 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 7697 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3402 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 8131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 7697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-09 20:08:22,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3402 Valid, 992 Invalid, 8131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 7697 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-09 20:08:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30719 states. [2024-11-09 20:08:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30719 to 30715. [2024-11-09 20:08:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30715 states, 30714 states have (on average 2.2148531614247573) internal successors, (68027), 30714 states have internal predecessors, (68027), 0 states have call successors, (0), 0 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 20:08:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30715 states to 30715 states and 68027 transitions. [2024-11-09 20:08:22,944 INFO L78 Accepts]: Start accepts. Automaton has 30715 states and 68027 transitions. Word has length 570 [2024-11-09 20:08:22,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:08:22,946 INFO L471 AbstractCegarLoop]: Abstraction has 30715 states and 68027 transitions. [2024-11-09 20:08:22,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 2 states have internal predecessors, (503), 0 states have call successors, (0), 0 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 20:08:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 30715 states and 68027 transitions. [2024-11-09 20:08:22,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-11-09 20:08:22,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:08:22,957 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:22,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 20:08:22,957 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:08:22,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:08:22,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1544157527, now seen corresponding path program 1 times [2024-11-09 20:08:22,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:08:22,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009392825] [2024-11-09 20:08:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:08:22,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:08:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:08:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 19 proven. 38 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-09 20:08:23,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:08:23,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009392825] [2024-11-09 20:08:23,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009392825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 20:08:23,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895699281] [2024-11-09 20:08:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:08:23,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:08:23,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:08:23,716 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 20:08:23,718 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 20:08:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:08:23,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 20:08:23,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 20:08:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:08:24,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 20:08:24,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895699281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:08:24,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 20:08:24,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 20:08:24,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648042195] [2024-11-09 20:08:24,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:08:24,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 20:08:24,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:08:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 20:08:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 20:08:24,198 INFO L87 Difference]: Start difference. First operand 30715 states and 68027 transitions. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 20:08:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:08:32,150 INFO L93 Difference]: Finished difference Result 84637 states and 189844 transitions. [2024-11-09 20:08:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 20:08:32,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 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 597 [2024-11-09 20:08:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:08:32,227 INFO L225 Difference]: With dead ends: 84637 [2024-11-09 20:08:32,228 INFO L226 Difference]: Without dead ends: 56656 [2024-11-09 20:08:32,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 20:08:32,252 INFO L432 NwaCegarLoop]: 1564 mSDtfsCounter, 2849 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 6493 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2849 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 8221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 6493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-09 20:08:32,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2849 Valid, 1702 Invalid, 8221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 6493 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-09 20:08:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56656 states. [2024-11-09 20:08:32,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56656 to 51192. [2024-11-09 20:08:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51192 states, 51191 states have (on average 2.1385204430466294) internal successors, (109473), 51191 states have internal predecessors, (109473), 0 states have call successors, (0), 0 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 20:08:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51192 states to 51192 states and 109473 transitions. [2024-11-09 20:08:32,796 INFO L78 Accepts]: Start accepts. Automaton has 51192 states and 109473 transitions. Word has length 597 [2024-11-09 20:08:32,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:08:32,796 INFO L471 AbstractCegarLoop]: Abstraction has 51192 states and 109473 transitions. [2024-11-09 20:08:32,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 20:08:32,797 INFO L276 IsEmpty]: Start isEmpty. Operand 51192 states and 109473 transitions. [2024-11-09 20:08:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2024-11-09 20:08:32,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:08:32,806 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:32,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 20:08:33,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:08:33,007 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:08:33,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:08:33,008 INFO L85 PathProgramCache]: Analyzing trace with hash 369671448, now seen corresponding path program 1 times [2024-11-09 20:08:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:08:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287476815] [2024-11-09 20:08:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:08:33,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:08:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:08:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 20:08:33,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:08:33,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287476815] [2024-11-09 20:08:33,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287476815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:08:33,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:08:33,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 20:08:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611184852] [2024-11-09 20:08:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:08:33,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 20:08:33,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:08:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 20:08:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 20:08:33,948 INFO L87 Difference]: Start difference. First operand 51192 states and 109473 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 20:08:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:08:42,061 INFO L93 Difference]: Finished difference Result 118878 states and 257036 transitions. [2024-11-09 20:08:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 20:08:42,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 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 714 [2024-11-09 20:08:42,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:08:42,157 INFO L225 Difference]: With dead ends: 118878 [2024-11-09 20:08:42,157 INFO L226 Difference]: Without dead ends: 70420 [2024-11-09 20:08:42,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 20:08:42,193 INFO L432 NwaCegarLoop]: 665 mSDtfsCounter, 3026 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6819 mSolverCounterSat, 2226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3026 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 9045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2226 IncrementalHoareTripleChecker+Valid, 6819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-09 20:08:42,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3026 Valid, 724 Invalid, 9045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2226 Valid, 6819 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-09 20:08:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70420 states. [2024-11-09 20:08:42,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70420 to 68960. [2024-11-09 20:08:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68960 states, 68959 states have (on average 2.1709856581446947) internal successors, (149709), 68959 states have internal predecessors, (149709), 0 states have call successors, (0), 0 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 20:08:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68960 states to 68960 states and 149709 transitions. [2024-11-09 20:08:43,432 INFO L78 Accepts]: Start accepts. Automaton has 68960 states and 149709 transitions. Word has length 714 [2024-11-09 20:08:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:08:43,434 INFO L471 AbstractCegarLoop]: Abstraction has 68960 states and 149709 transitions. [2024-11-09 20:08:43,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 20:08:43,434 INFO L276 IsEmpty]: Start isEmpty. Operand 68960 states and 149709 transitions. [2024-11-09 20:08:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2024-11-09 20:08:43,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:08:43,445 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:43,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 20:08:43,445 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:08:43,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:08:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2029339555, now seen corresponding path program 1 times [2024-11-09 20:08:43,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:08:43,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322044239] [2024-11-09 20:08:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:08:43,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:08:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat