./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label02.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_label02.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 fede3a1c55393acd487bbed2de4254313cf50e8da830e08a05b90151eebe83c7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 20:01:56,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 20:01:56,313 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 20:01:56,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 20:01:56,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 20:01:56,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 20:01:56,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 20:01:56,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 20:01:56,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 20:01:56,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 20:01:56,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 20:01:56,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 20:01:56,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 20:01:56,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 20:01:56,354 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 20:01:56,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 20:01:56,355 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 20:01:56,358 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 20:01:56,358 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 20:01:56,358 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 20:01:56,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 20:01:56,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 20:01:56,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 20:01:56,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 20:01:56,364 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 20:01:56,364 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 20:01:56,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 20:01:56,364 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 20:01:56,365 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 20:01:56,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 20:01:56,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 20:01:56,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 20:01:56,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 20:01:56,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 20:01:56,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 20:01:56,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 20:01:56,367 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 20:01:56,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 20:01:56,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 20:01:56,367 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 20:01:56,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 20:01:56,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 20:01:56,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fede3a1c55393acd487bbed2de4254313cf50e8da830e08a05b90151eebe83c7 [2024-11-09 20:01:56,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 20:01:56,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 20:01:56,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 20:01:56,696 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 20:01:56,696 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 20:01:56,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label02.c [2024-11-09 20:01:58,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 20:01:58,693 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 20:01:58,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label02.c [2024-11-09 20:01:58,742 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390b3c48d/e533bd7b2a02419ca4ad348a34c9221e/FLAG4d31c3fd8 [2024-11-09 20:01:59,248 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390b3c48d/e533bd7b2a02419ca4ad348a34c9221e [2024-11-09 20:01:59,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 20:01:59,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 20:01:59,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 20:01:59,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 20:01:59,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 20:01:59,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:01:59" (1/1) ... [2024-11-09 20:01:59,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c1180c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:01:59, skipping insertion in model container [2024-11-09 20:01:59,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:01:59" (1/1) ... [2024-11-09 20:01:59,411 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 20:01:59,813 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_label02.c[8512,8525] [2024-11-09 20:02:00,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 20:02:00,924 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 20:02:00,994 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_label02.c[8512,8525] [2024-11-09 20:02:01,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 20:02:01,703 INFO L204 MainTranslator]: Completed translation [2024-11-09 20:02:01,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01 WrapperNode [2024-11-09 20:02:01,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 20:02:01,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 20:02:01,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 20:02:01,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 20:02:01,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:01,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:02,977 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9430 [2024-11-09 20:02:02,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 20:02:02,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 20:02:02,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 20:02:02,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 20:02:02,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:02,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:03,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:03,494 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 20:02:03,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:03,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:03,725 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:03,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:03,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:03,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:04,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 20:02:04,018 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 20:02:04,018 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 20:02:04,018 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 20:02:04,019 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (1/1) ... [2024-11-09 20:02:04,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 20:02:04,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:02:04,053 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 20:02:04,061 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 20:02:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 20:02:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 20:02:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 20:02:04,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 20:02:04,189 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 20:02:04,191 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 20:02:14,108 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L6717: havoc calculate_output4_#t~ret14#1; [2024-11-09 20:02:14,108 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3435: havoc calculate_output2_#t~ret12#1; [2024-11-09 20:02:14,108 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1859: havoc calculate_output_#t~ret11#1; [2024-11-09 20:02:14,109 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L8350: havoc calculate_output5_#t~ret15#1; [2024-11-09 20:02:14,109 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L5079: havoc calculate_output3_#t~ret13#1; [2024-11-09 20:02:14,889 INFO L? ?]: Removed 3705 outVars from TransFormulas that were not future-live. [2024-11-09 20:02:14,889 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 20:02:14,945 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 20:02:14,946 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 20:02:14,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 08:02:14 BoogieIcfgContainer [2024-11-09 20:02:14,947 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 20:02:14,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 20:02:14,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 20:02:14,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 20:02:14,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:01:59" (1/3) ... [2024-11-09 20:02:14,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48bcc40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:02:14, skipping insertion in model container [2024-11-09 20:02:14,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:02:01" (2/3) ... [2024-11-09 20:02:14,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48bcc40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:02:14, skipping insertion in model container [2024-11-09 20:02:14,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 08:02:14" (3/3) ... [2024-11-09 20:02:14,959 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02.c [2024-11-09 20:02:14,977 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 20:02:14,977 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 20:02:15,101 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 20:02:15,108 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;@6393a7f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 20:02:15,108 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 20:02:15,119 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 20:02:15,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 20:02:15,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:02:15,130 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 20:02:15,131 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:02:15,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:02:15,136 INFO L85 PathProgramCache]: Analyzing trace with hash 413865246, now seen corresponding path program 1 times [2024-11-09 20:02:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:02:15,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822699389] [2024-11-09 20:02:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:02:15,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:02:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:02:15,646 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 20:02:15,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:02:15,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822699389] [2024-11-09 20:02:15,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822699389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:02:15,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:02:15,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 20:02:15,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654902426] [2024-11-09 20:02:15,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:02:15,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 20:02:15,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:02:15,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 20:02:15,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 20:02:15,694 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 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 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 20:02:24,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:02:24,595 INFO L93 Difference]: Finished difference Result 4981 states and 13292 transitions. [2024-11-09 20:02:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 20:02:24,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-11-09 20:02:24,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:02:24,634 INFO L225 Difference]: With dead ends: 4981 [2024-11-09 20:02:24,635 INFO L226 Difference]: Without dead ends: 3166 [2024-11-09 20:02:24,644 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 20:02:24,647 INFO L432 NwaCegarLoop]: 1355 mSDtfsCounter, 2770 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 7250 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2770 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 8373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 7250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-09 20:02:24,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2770 Valid, 1528 Invalid, 8373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1123 Valid, 7250 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-09 20:02:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2024-11-09 20:02:24,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 3126. [2024-11-09 20:02:24,791 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 20:02:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 7662 transitions. [2024-11-09 20:02:24,806 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 7662 transitions. Word has length 68 [2024-11-09 20:02:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:02:24,807 INFO L471 AbstractCegarLoop]: Abstraction has 3126 states and 7662 transitions. [2024-11-09 20:02:24,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 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 20:02:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 7662 transitions. [2024-11-09 20:02:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-09 20:02:24,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:02:24,814 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 20:02:24,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 20:02:24,815 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:02:24,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:02:24,815 INFO L85 PathProgramCache]: Analyzing trace with hash 142071483, now seen corresponding path program 1 times [2024-11-09 20:02:24,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:02:24,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220427373] [2024-11-09 20:02:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:02:24,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:02:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:02:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:02:25,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:02:25,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220427373] [2024-11-09 20:02:25,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220427373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:02:25,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:02:25,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 20:02:25,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521364498] [2024-11-09 20:02:25,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:02:25,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 20:02:25,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:02:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 20:02:25,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 20:02:25,333 INFO L87 Difference]: Start difference. First operand 3126 states and 7662 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 20:02:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:02:38,072 INFO L93 Difference]: Finished difference Result 10384 states and 25636 transitions. [2024-11-09 20:02:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 20:02:38,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2024-11-09 20:02:38,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:02:38,114 INFO L225 Difference]: With dead ends: 10384 [2024-11-09 20:02:38,115 INFO L226 Difference]: Without dead ends: 7260 [2024-11-09 20:02:38,124 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 20:02:38,126 INFO L432 NwaCegarLoop]: 700 mSDtfsCounter, 8357 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 10872 mSolverCounterSat, 2736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8357 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 13608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2736 IncrementalHoareTripleChecker+Valid, 10872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-09 20:02:38,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8357 Valid, 968 Invalid, 13608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2736 Valid, 10872 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2024-11-09 20:02:38,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7260 states. [2024-11-09 20:02:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7260 to 7254. [2024-11-09 20:02:38,317 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 20:02:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7254 states to 7254 states and 17144 transitions. [2024-11-09 20:02:38,342 INFO L78 Accepts]: Start accepts. Automaton has 7254 states and 17144 transitions. Word has length 140 [2024-11-09 20:02:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:02:38,345 INFO L471 AbstractCegarLoop]: Abstraction has 7254 states and 17144 transitions. [2024-11-09 20:02:38,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 20:02:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 7254 states and 17144 transitions. [2024-11-09 20:02:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-09 20:02:38,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:02:38,356 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, 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 20:02:38,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 20:02:38,356 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:02:38,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:02:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash 244620121, now seen corresponding path program 1 times [2024-11-09 20:02:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:02:38,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648034186] [2024-11-09 20:02:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:02:38,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:02:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:02:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:02:39,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:02:39,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648034186] [2024-11-09 20:02:39,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648034186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:02:39,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:02:39,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 20:02:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362712071] [2024-11-09 20:02:39,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:02:39,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 20:02:39,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:02:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 20:02:39,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 20:02:39,345 INFO L87 Difference]: Start difference. First operand 7254 states and 17144 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 20:02:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:02:52,560 INFO L93 Difference]: Finished difference Result 20021 states and 49326 transitions. [2024-11-09 20:02:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 20:02:52,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2024-11-09 20:02:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:02:52,615 INFO L225 Difference]: With dead ends: 20021 [2024-11-09 20:02:52,615 INFO L226 Difference]: Without dead ends: 14135 [2024-11-09 20:02:52,627 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 20:02:52,628 INFO L432 NwaCegarLoop]: 1803 mSDtfsCounter, 7631 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 14600 mSolverCounterSat, 1331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7631 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 15931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1331 IncrementalHoareTripleChecker+Valid, 14600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-09 20:02:52,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7631 Valid, 2164 Invalid, 15931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1331 Valid, 14600 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2024-11-09 20:02:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14135 states. [2024-11-09 20:02:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14135 to 14116. [2024-11-09 20:02:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14116 states, 14115 states have (on average 2.203542330853702) internal successors, (31103), 14115 states have internal predecessors, (31103), 0 states have call successors, (0), 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 20:02:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14116 states to 14116 states and 31103 transitions. [2024-11-09 20:02:52,926 INFO L78 Accepts]: Start accepts. Automaton has 14116 states and 31103 transitions. Word has length 276 [2024-11-09 20:02:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:02:52,927 INFO L471 AbstractCegarLoop]: Abstraction has 14116 states and 31103 transitions. [2024-11-09 20:02:52,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 20:02:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 14116 states and 31103 transitions. [2024-11-09 20:02:52,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-09 20:02:52,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:02:52,932 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, 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] [2024-11-09 20:02:52,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 20:02:52,932 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:02:52,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:02:52,934 INFO L85 PathProgramCache]: Analyzing trace with hash -841307555, now seen corresponding path program 1 times [2024-11-09 20:02:52,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:02:52,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795196319] [2024-11-09 20:02:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:02:52,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:02:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:02:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:02:53,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:02:53,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795196319] [2024-11-09 20:02:53,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795196319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:02:53,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:02:53,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 20:02:53,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091280937] [2024-11-09 20:02:53,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:02:53,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 20:02:53,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:02:53,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 20:02:53,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 20:02:53,468 INFO L87 Difference]: Start difference. First operand 14116 states and 31103 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 20:03:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:03:01,660 INFO L93 Difference]: Finished difference Result 25530 states and 56906 transitions. [2024-11-09 20:03:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 20:03:01,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 304 [2024-11-09 20:03:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:03:01,696 INFO L225 Difference]: With dead ends: 25530 [2024-11-09 20:03:01,696 INFO L226 Difference]: Without dead ends: 14116 [2024-11-09 20:03:01,711 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 20:03:01,713 INFO L432 NwaCegarLoop]: 1774 mSDtfsCounter, 2428 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 11187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 11195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-09 20:03:01,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2428 Valid, 2120 Invalid, 11195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11187 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-09 20:03:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14116 states. [2024-11-09 20:03:01,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14116 to 14116. [2024-11-09 20:03:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14116 states, 14115 states have (on average 2.2026213248317394) internal successors, (31090), 14115 states have internal predecessors, (31090), 0 states have call successors, (0), 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 20:03:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14116 states to 14116 states and 31090 transitions. [2024-11-09 20:03:01,992 INFO L78 Accepts]: Start accepts. Automaton has 14116 states and 31090 transitions. Word has length 304 [2024-11-09 20:03:01,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:03:01,993 INFO L471 AbstractCegarLoop]: Abstraction has 14116 states and 31090 transitions. [2024-11-09 20:03:01,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 20:03:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 14116 states and 31090 transitions. [2024-11-09 20:03:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2024-11-09 20:03:02,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:03:02,002 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, 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, 1, 1, 1, 1] [2024-11-09 20:03:02,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 20:03:02,004 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:03:02,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:03:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1084927542, now seen corresponding path program 1 times [2024-11-09 20:03:02,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:03:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014986105] [2024-11-09 20:03:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:03:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:03:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:03:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:03:02,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:03:02,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014986105] [2024-11-09 20:03:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014986105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 20:03:02,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501165290] [2024-11-09 20:03:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:03:02,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:03:02,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:03:02,943 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 20:03:02,945 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 20:03:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:03:03,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 20:03:03,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 20:03:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 20:03:03,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 20:03:03,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501165290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:03:03,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 20:03:03,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 20:03:03,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9490263] [2024-11-09 20:03:03,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:03:03,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 20:03:03,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:03:03,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 20:03:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 20:03:03,979 INFO L87 Difference]: Start difference. First operand 14116 states and 31090 transitions. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 2 states have internal predecessors, (493), 0 states have call successors, (0), 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 20:03:10,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:03:10,733 INFO L93 Difference]: Finished difference Result 30983 states and 69255 transitions. [2024-11-09 20:03:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 20:03:10,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 2 states have internal predecessors, (493), 0 states have call successors, (0), 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 556 [2024-11-09 20:03:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:03:10,780 INFO L225 Difference]: With dead ends: 30983 [2024-11-09 20:03:10,780 INFO L226 Difference]: Without dead ends: 19601 [2024-11-09 20:03:10,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 20:03:10,798 INFO L432 NwaCegarLoop]: 1209 mSDtfsCounter, 2347 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 7154 mSolverCounterSat, 819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 7973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 7154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-09 20:03:10,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2347 Valid, 1388 Invalid, 7973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [819 Valid, 7154 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-09 20:03:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19601 states. [2024-11-09 20:03:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19601 to 19600. [2024-11-09 20:03:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19600 states, 19599 states have (on average 2.174906883004235) internal successors, (42626), 19599 states have internal predecessors, (42626), 0 states have call successors, (0), 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 20:03:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19600 states to 19600 states and 42626 transitions. [2024-11-09 20:03:11,271 INFO L78 Accepts]: Start accepts. Automaton has 19600 states and 42626 transitions. Word has length 556 [2024-11-09 20:03:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:03:11,273 INFO L471 AbstractCegarLoop]: Abstraction has 19600 states and 42626 transitions. [2024-11-09 20:03:11,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 2 states have internal predecessors, (493), 0 states have call successors, (0), 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 20:03:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 19600 states and 42626 transitions. [2024-11-09 20:03:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2024-11-09 20:03:11,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:03:11,285 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 20:03:11,303 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 20:03:11,486 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 20:03:11,486 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:03:11,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:03:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash -915910067, now seen corresponding path program 1 times [2024-11-09 20:03:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:03:11,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271895045] [2024-11-09 20:03:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:03:11,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:03:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:03:12,468 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 152 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:03:12,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:03:12,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271895045] [2024-11-09 20:03:12,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271895045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 20:03:12,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453192420] [2024-11-09 20:03:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:03:12,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:03:12,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:03:12,473 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 20:03:12,474 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 20:03:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:03:12,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 20:03:12,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 20:03:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 20:03:13,332 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 20:03:13,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453192420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:03:13,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 20:03:13,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 20:03:13,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121625754] [2024-11-09 20:03:13,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:03:13,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 20:03:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:03:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 20:03:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 20:03:13,335 INFO L87 Difference]: Start difference. First operand 19600 states and 42626 transitions. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 2 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)