./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label07.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 c6eeba0e1c333b0671bbfcf3662adf7139859c1a965a716dd9b28c849af19818 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 23:26:36,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 23:26:36,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 23:26:36,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 23:26:36,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 23:26:36,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 23:26:36,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 23:26:36,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 23:26:36,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 23:26:36,918 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 23:26:36,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 23:26:36,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 23:26:36,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 23:26:36,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 23:26:36,919 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 23:26:36,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 23:26:36,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 23:26:36,920 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 23:26:36,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 23:26:36,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 23:26:36,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 23:26:36,921 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 23:26:36,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 23:26:36,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 23:26:36,922 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 23:26:36,922 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 23:26:36,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 23:26:36,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 23:26:36,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 23:26:36,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 23:26:36,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 23:26:36,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 23:26:36,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:26:36,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 23:26:36,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 23:26:36,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 23:26:36,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 23:26:36,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 23:26:36,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 23:26:36,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 23:26:36,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 23:26:36,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 23:26:36,924 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6eeba0e1c333b0671bbfcf3662adf7139859c1a965a716dd9b28c849af19818 [2024-10-10 23:26:37,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 23:26:37,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 23:26:37,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 23:26:37,142 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 23:26:37,143 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 23:26:37,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label07.c [2024-10-10 23:26:38,381 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 23:26:38,759 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 23:26:38,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label07.c [2024-10-10 23:26:38,792 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/4db025fd0/d61f9bc122694c77a5305b38ef88f654/FLAGaa712ec22 [2024-10-10 23:26:38,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/4db025fd0/d61f9bc122694c77a5305b38ef88f654 [2024-10-10 23:26:38,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 23:26:38,937 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 23:26:38,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 23:26:38,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 23:26:38,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 23:26:38,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:26:38" (1/1) ... [2024-10-10 23:26:38,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c0118e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:38, skipping insertion in model container [2024-10-10 23:26:38,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:26:38" (1/1) ... [2024-10-10 23:26:39,030 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 23:26:39,223 WARN L248 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/Problem13_label07.c[3249,3262] [2024-10-10 23:26:39,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:26:39,927 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 23:26:39,942 WARN L248 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/Problem13_label07.c[3249,3262] [2024-10-10 23:26:40,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:26:40,303 INFO L204 MainTranslator]: Completed translation [2024-10-10 23:26:40,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40 WrapperNode [2024-10-10 23:26:40,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 23:26:40,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 23:26:40,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 23:26:40,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 23:26:40,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:40,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:40,818 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-10 23:26:40,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 23:26:40,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 23:26:40,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 23:26:40,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 23:26:40,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:40,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:40,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:41,042 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]. [2024-10-10 23:26:41,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:41,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:41,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:41,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:41,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:41,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:41,423 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 23:26:41,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 23:26:41,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 23:26:41,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 23:26:41,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (1/1) ... [2024-10-10 23:26:41,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:26:41,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:26:41,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 23:26:41,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 23:26:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 23:26:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 23:26:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 23:26:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 23:26:41,560 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 23:26:41,561 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 23:26:46,074 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-10 23:26:46,075 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 23:26:46,130 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 23:26:46,131 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 23:26:46,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:26:46 BoogieIcfgContainer [2024-10-10 23:26:46,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 23:26:46,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 23:26:46,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 23:26:46,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 23:26:46,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:26:38" (1/3) ... [2024-10-10 23:26:46,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a98b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:26:46, skipping insertion in model container [2024-10-10 23:26:46,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:26:40" (2/3) ... [2024-10-10 23:26:46,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a98b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:26:46, skipping insertion in model container [2024-10-10 23:26:46,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:26:46" (3/3) ... [2024-10-10 23:26:46,141 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label07.c [2024-10-10 23:26:46,155 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 23:26:46,156 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 23:26:46,234 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 23:26:46,239 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;@33ce7ff3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 23:26:46,239 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 23:26:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-10 23:26:46,250 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:26:46,250 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] [2024-10-10 23:26:46,251 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:26:46,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:26:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1017858262, now seen corresponding path program 1 times [2024-10-10 23:26:46,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:26:46,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475801968] [2024-10-10 23:26:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:26:46,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:26:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:26:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:26:46,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:26:46,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475801968] [2024-10-10 23:26:46,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475801968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:26:46,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:26:46,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:26:46,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243189251] [2024-10-10 23:26:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:26:46,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 23:26:46,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:26:46,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 23:26:46,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:26:46,432 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:26:46,503 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-10 23:26:46,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 23:26:46,510 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-10 23:26:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:26:46,526 INFO L225 Difference]: With dead ends: 2071 [2024-10-10 23:26:46,527 INFO L226 Difference]: Without dead ends: 1034 [2024-10-10 23:26:46,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:26:46,537 INFO L432 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:26:46,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 23:26:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-10 23:26:46,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-10 23:26:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-10 23:26:46,633 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 20 [2024-10-10 23:26:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:26:46,633 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-10 23:26:46,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-10 23:26:46,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-10 23:26:46,634 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:26:46,634 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] [2024-10-10 23:26:46,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 23:26:46,634 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:26:46,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:26:46,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1418202880, now seen corresponding path program 1 times [2024-10-10 23:26:46,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:26:46,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090478052] [2024-10-10 23:26:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:26:46,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:26:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:26:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:26:46,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:26:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090478052] [2024-10-10 23:26:46,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090478052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:26:46,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:26:46,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:26:46,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820836909] [2024-10-10 23:26:46,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:26:46,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:26:46,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:26:46,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:26:46,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:26:46,762 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:49,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:26:49,865 INFO L93 Difference]: Finished difference Result 2931 states and 5350 transitions. [2024-10-10 23:26:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:26:49,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-10 23:26:49,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:26:49,876 INFO L225 Difference]: With dead ends: 2931 [2024-10-10 23:26:49,878 INFO L226 Difference]: Without dead ends: 1898 [2024-10-10 23:26:49,879 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 [2024-10-10 23:26:49,880 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 994 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:26:49,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 594 Invalid, 3435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-10 23:26:49,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2024-10-10 23:26:49,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1893. [2024-10-10 23:26:49,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 1.73784355179704) internal successors, (3288), 1892 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3288 transitions. [2024-10-10 23:26:49,915 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3288 transitions. Word has length 20 [2024-10-10 23:26:49,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:26:49,916 INFO L471 AbstractCegarLoop]: Abstraction has 1893 states and 3288 transitions. [2024-10-10 23:26:49,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:49,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3288 transitions. [2024-10-10 23:26:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-10 23:26:49,920 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:26:49,921 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-10 23:26:49,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 23:26:49,921 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:26:49,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:26:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash 350423467, now seen corresponding path program 1 times [2024-10-10 23:26:49,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:26:49,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940300847] [2024-10-10 23:26:49,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:26:49,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:26:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:26:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:26:50,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:26:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940300847] [2024-10-10 23:26:50,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940300847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:26:50,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:26:50,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:26:50,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838213576] [2024-10-10 23:26:50,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:26:50,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:26:50,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:26:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:26:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:26:50,124 INFO L87 Difference]: Start difference. First operand 1893 states and 3288 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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) [2024-10-10 23:26:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:26:52,807 INFO L93 Difference]: Finished difference Result 5383 states and 9440 transitions. [2024-10-10 23:26:52,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:26:52,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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 [2024-10-10 23:26:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:26:52,818 INFO L225 Difference]: With dead ends: 5383 [2024-10-10 23:26:52,818 INFO L226 Difference]: Without dead ends: 3491 [2024-10-10 23:26:52,821 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 [2024-10-10 23:26:52,822 INFO L432 NwaCegarLoop]: 858 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:26:52,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1011 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-10 23:26:52,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2024-10-10 23:26:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3490. [2024-10-10 23:26:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 1.5385497277156779) internal successors, (5368), 3489 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5368 transitions. [2024-10-10 23:26:52,864 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5368 transitions. Word has length 85 [2024-10-10 23:26:52,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:26:52,865 INFO L471 AbstractCegarLoop]: Abstraction has 3490 states and 5368 transitions. [2024-10-10 23:26:52,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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) [2024-10-10 23:26:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5368 transitions. [2024-10-10 23:26:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-10 23:26:52,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:26:52,867 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:26:52,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 23:26:52,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:26:52,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:26:52,868 INFO L85 PathProgramCache]: Analyzing trace with hash 300510096, now seen corresponding path program 1 times [2024-10-10 23:26:52,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:26:52,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718544579] [2024-10-10 23:26:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:26:52,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:26:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:26:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:26:52,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:26:52,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718544579] [2024-10-10 23:26:52,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718544579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:26:52,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:26:52,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:26:52,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290720505] [2024-10-10 23:26:52,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:26:52,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:26:52,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:26:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:26:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:26:52,981 INFO L87 Difference]: Start difference. First operand 3490 states and 5368 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:26:55,564 INFO L93 Difference]: Finished difference Result 10168 states and 15699 transitions. [2024-10-10 23:26:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:26:55,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-10-10 23:26:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:26:55,581 INFO L225 Difference]: With dead ends: 10168 [2024-10-10 23:26:55,582 INFO L226 Difference]: Without dead ends: 6679 [2024-10-10 23:26:55,586 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 [2024-10-10 23:26:55,587 INFO L432 NwaCegarLoop]: 712 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:26:55,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 845 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-10 23:26:55,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2024-10-10 23:26:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6668. [2024-10-10 23:26:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 1.3752812359382032) internal successors, (9169), 6667 states have internal predecessors, (9169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 9169 transitions. [2024-10-10 23:26:55,678 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 9169 transitions. Word has length 87 [2024-10-10 23:26:55,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:26:55,679 INFO L471 AbstractCegarLoop]: Abstraction has 6668 states and 9169 transitions. [2024-10-10 23:26:55,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 9169 transitions. [2024-10-10 23:26:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-10 23:26:55,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:26:55,685 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-10 23:26:55,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 23:26:55,685 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:26:55,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:26:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2009907998, now seen corresponding path program 1 times [2024-10-10 23:26:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:26:55,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446833191] [2024-10-10 23:26:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:26:55,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:26:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:26:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:26:56,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:26:56,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446833191] [2024-10-10 23:26:56,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446833191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:26:56,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:26:56,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:26:56,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556130949] [2024-10-10 23:26:56,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:26:56,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:26:56,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:26:56,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:26:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:26:56,014 INFO L87 Difference]: Start difference. First operand 6668 states and 9169 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:58,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:26:58,113 INFO L93 Difference]: Finished difference Result 14122 states and 19184 transitions. [2024-10-10 23:26:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:26:58,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2024-10-10 23:26:58,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:26:58,131 INFO L225 Difference]: With dead ends: 14122 [2024-10-10 23:26:58,131 INFO L226 Difference]: Without dead ends: 7455 [2024-10-10 23:26:58,137 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 [2024-10-10 23:26:58,137 INFO L432 NwaCegarLoop]: 1084 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:26:58,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1213 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-10 23:26:58,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2024-10-10 23:26:58,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7455. [2024-10-10 23:26:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 7454 states have (on average 1.3363294875234772) internal successors, (9961), 7454 states have internal predecessors, (9961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 9961 transitions. [2024-10-10 23:26:58,224 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 9961 transitions. Word has length 131 [2024-10-10 23:26:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:26:58,225 INFO L471 AbstractCegarLoop]: Abstraction has 7455 states and 9961 transitions. [2024-10-10 23:26:58,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:26:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 9961 transitions. [2024-10-10 23:26:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-10 23:26:58,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:26:58,227 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-10 23:26:58,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 23:26:58,228 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:26:58,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:26:58,229 INFO L85 PathProgramCache]: Analyzing trace with hash -511031928, now seen corresponding path program 1 times [2024-10-10 23:26:58,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:26:58,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831723330] [2024-10-10 23:26:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:26:58,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:26:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:26:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:26:58,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:26:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831723330] [2024-10-10 23:26:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831723330] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:26:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377604153] [2024-10-10 23:26:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:26:58,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:26:58,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:26:58,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:26:58,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 23:26:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:26:58,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:26:58,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:26:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-10 23:26:58,886 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:26:58,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377604153] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:26:58,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:26:58,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-10 23:26:58,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861279314] [2024-10-10 23:26:58,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:26:58,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:26:58,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:26:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:26:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:26:58,890 INFO L87 Difference]: Start difference. First operand 7455 states and 9961 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:01,549 INFO L93 Difference]: Finished difference Result 19655 states and 26990 transitions. [2024-10-10 23:27:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:27:01,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 145 [2024-10-10 23:27:01,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:01,582 INFO L225 Difference]: With dead ends: 19655 [2024-10-10 23:27:01,583 INFO L226 Difference]: Without dead ends: 12988 [2024-10-10 23:27:01,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:27:01,593 INFO L432 NwaCegarLoop]: 1069 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:01,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1220 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-10 23:27:01,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2024-10-10 23:27:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 12971. [2024-10-10 23:27:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12970 states have (on average 1.235929067077872) internal successors, (16030), 12970 states have internal predecessors, (16030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16030 transitions. [2024-10-10 23:27:01,783 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16030 transitions. Word has length 145 [2024-10-10 23:27:01,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:01,783 INFO L471 AbstractCegarLoop]: Abstraction has 12971 states and 16030 transitions. [2024-10-10 23:27:01,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16030 transitions. [2024-10-10 23:27:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-10-10 23:27:01,785 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:01,785 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:27:01,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 23:27:01,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:27:01,986 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:01,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash -38162631, now seen corresponding path program 1 times [2024-10-10 23:27:01,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:01,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616402284] [2024-10-10 23:27:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-10 23:27:02,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:02,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616402284] [2024-10-10 23:27:02,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616402284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:02,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:27:02,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:27:02,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432993756] [2024-10-10 23:27:02,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:02,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:27:02,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:02,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:27:02,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:27:02,232 INFO L87 Difference]: Start difference. First operand 12971 states and 16030 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:04,659 INFO L93 Difference]: Finished difference Result 22791 states and 28650 transitions. [2024-10-10 23:27:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:27:04,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 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 232 [2024-10-10 23:27:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:04,675 INFO L225 Difference]: With dead ends: 22791 [2024-10-10 23:27:04,675 INFO L226 Difference]: Without dead ends: 12979 [2024-10-10 23:27:04,681 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 [2024-10-10 23:27:04,681 INFO L432 NwaCegarLoop]: 1025 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:04,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1209 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-10 23:27:04,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12979 states. [2024-10-10 23:27:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12979 to 12971. [2024-10-10 23:27:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12970 states have (on average 1.2347725520431765) internal successors, (16015), 12970 states have internal predecessors, (16015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16015 transitions. [2024-10-10 23:27:04,797 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16015 transitions. Word has length 232 [2024-10-10 23:27:04,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:04,798 INFO L471 AbstractCegarLoop]: Abstraction has 12971 states and 16015 transitions. [2024-10-10 23:27:04,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16015 transitions. [2024-10-10 23:27:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-10-10 23:27:04,803 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:04,803 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:27:04,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 23:27:04,804 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:04,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1490533281, now seen corresponding path program 1 times [2024-10-10 23:27:04,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:04,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174729030] [2024-10-10 23:27:04,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:04,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:27:04,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:04,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174729030] [2024-10-10 23:27:04,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174729030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:04,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:27:04,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:27:04,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322134796] [2024-10-10 23:27:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:04,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:27:04,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:27:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:27:04,919 INFO L87 Difference]: Start difference. First operand 12971 states and 16015 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:07,541 INFO L93 Difference]: Finished difference Result 36165 states and 45133 transitions. [2024-10-10 23:27:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:27:07,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2024-10-10 23:27:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:07,573 INFO L225 Difference]: With dead ends: 36165 [2024-10-10 23:27:07,573 INFO L226 Difference]: Without dead ends: 23195 [2024-10-10 23:27:07,587 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 [2024-10-10 23:27:07,589 INFO L432 NwaCegarLoop]: 1849 mSDtfsCounter, 842 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:07,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1985 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-10 23:27:07,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23195 states. [2024-10-10 23:27:07,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23195 to 23190. [2024-10-10 23:27:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23190 states, 23189 states have (on average 1.1870283323989823) internal successors, (27526), 23189 states have internal predecessors, (27526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23190 states to 23190 states and 27526 transitions. [2024-10-10 23:27:07,793 INFO L78 Accepts]: Start accepts. Automaton has 23190 states and 27526 transitions. Word has length 234 [2024-10-10 23:27:07,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:07,794 INFO L471 AbstractCegarLoop]: Abstraction has 23190 states and 27526 transitions. [2024-10-10 23:27:07,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:07,794 INFO L276 IsEmpty]: Start isEmpty. Operand 23190 states and 27526 transitions. [2024-10-10 23:27:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-10-10 23:27:07,797 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:07,797 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:27:07,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-10 23:27:07,797 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:07,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:07,797 INFO L85 PathProgramCache]: Analyzing trace with hash 198601295, now seen corresponding path program 1 times [2024-10-10 23:27:07,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:07,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398197091] [2024-10-10 23:27:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:07,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-10 23:27:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:08,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398197091] [2024-10-10 23:27:08,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398197091] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:08,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:27:08,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:27:08,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226487432] [2024-10-10 23:27:08,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:08,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:27:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:08,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:27:08,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:27:08,015 INFO L87 Difference]: Start difference. First operand 23190 states and 27526 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:10,650 INFO L93 Difference]: Finished difference Result 56619 states and 68543 transitions. [2024-10-10 23:27:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:27:10,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 256 [2024-10-10 23:27:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:10,687 INFO L225 Difference]: With dead ends: 56619 [2024-10-10 23:27:10,687 INFO L226 Difference]: Without dead ends: 34217 [2024-10-10 23:27:10,709 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 [2024-10-10 23:27:10,710 INFO L432 NwaCegarLoop]: 808 mSDtfsCounter, 881 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:10,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 926 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-10 23:27:10,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34217 states. [2024-10-10 23:27:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34217 to 33422. [2024-10-10 23:27:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33422 states, 33421 states have (on average 1.1722569641841956) internal successors, (39178), 33421 states have internal predecessors, (39178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33422 states to 33422 states and 39178 transitions. [2024-10-10 23:27:11,003 INFO L78 Accepts]: Start accepts. Automaton has 33422 states and 39178 transitions. Word has length 256 [2024-10-10 23:27:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:11,003 INFO L471 AbstractCegarLoop]: Abstraction has 33422 states and 39178 transitions. [2024-10-10 23:27:11,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 33422 states and 39178 transitions. [2024-10-10 23:27:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-10-10 23:27:11,008 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:11,008 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:27:11,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 23:27:11,009 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:11,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1803285861, now seen corresponding path program 1 times [2024-10-10 23:27:11,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:11,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224121358] [2024-10-10 23:27:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-10 23:27:11,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:11,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224121358] [2024-10-10 23:27:11,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224121358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:11,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:27:11,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:27:11,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784985291] [2024-10-10 23:27:11,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:11,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:27:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:27:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:27:11,293 INFO L87 Difference]: Start difference. First operand 33422 states and 39178 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:16,847 INFO L93 Difference]: Finished difference Result 118209 states and 138561 transitions. [2024-10-10 23:27:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:27:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 308 [2024-10-10 23:27:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:16,942 INFO L225 Difference]: With dead ends: 118209 [2024-10-10 23:27:16,942 INFO L226 Difference]: Without dead ends: 85575 [2024-10-10 23:27:16,967 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 [2024-10-10 23:27:16,968 INFO L432 NwaCegarLoop]: 865 mSDtfsCounter, 1689 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7051 mSolverCounterSat, 938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 7989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 7051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:16,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 1117 Invalid, 7989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 7051 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-10-10 23:27:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85575 states. [2024-10-10 23:27:17,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85575 to 82305. [2024-10-10 23:27:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82305 states, 82304 states have (on average 1.1536741835147746) internal successors, (94952), 82304 states have internal predecessors, (94952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82305 states to 82305 states and 94952 transitions. [2024-10-10 23:27:17,802 INFO L78 Accepts]: Start accepts. Automaton has 82305 states and 94952 transitions. Word has length 308 [2024-10-10 23:27:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:17,803 INFO L471 AbstractCegarLoop]: Abstraction has 82305 states and 94952 transitions. [2024-10-10 23:27:17,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 82305 states and 94952 transitions. [2024-10-10 23:27:17,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-10-10 23:27:17,806 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:17,806 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:27:17,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 23:27:17,807 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:17,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:17,807 INFO L85 PathProgramCache]: Analyzing trace with hash 428194920, now seen corresponding path program 1 times [2024-10-10 23:27:17,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:17,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980353564] [2024-10-10 23:27:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:17,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 166 proven. 113 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-10 23:27:18,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:18,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980353564] [2024-10-10 23:27:18,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980353564] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:27:18,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86775320] [2024-10-10 23:27:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:18,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:27:18,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:27:18,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:27:18,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 23:27:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:19,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:27:19,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:27:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-10 23:27:19,157 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:27:19,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86775320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:19,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:27:19,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-10 23:27:19,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661595078] [2024-10-10 23:27:19,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:19,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:27:19,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:19,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:27:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:27:19,159 INFO L87 Difference]: Start difference. First operand 82305 states and 94952 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:21,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:21,826 INFO L93 Difference]: Finished difference Result 163811 states and 189101 transitions. [2024-10-10 23:27:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:27:21,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 326 [2024-10-10 23:27:21,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:21,920 INFO L225 Difference]: With dead ends: 163811 [2024-10-10 23:27:21,921 INFO L226 Difference]: Without dead ends: 82294 [2024-10-10 23:27:21,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:27:21,968 INFO L432 NwaCegarLoop]: 680 mSDtfsCounter, 1072 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:21,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 814 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-10 23:27:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82294 states. [2024-10-10 23:27:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82294 to 82291. [2024-10-10 23:27:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82291 states, 82290 states have (on average 1.1159071576133188) internal successors, (91828), 82290 states have internal predecessors, (91828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82291 states to 82291 states and 91828 transitions. [2024-10-10 23:27:23,118 INFO L78 Accepts]: Start accepts. Automaton has 82291 states and 91828 transitions. Word has length 326 [2024-10-10 23:27:23,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:23,122 INFO L471 AbstractCegarLoop]: Abstraction has 82291 states and 91828 transitions. [2024-10-10 23:27:23,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:23,122 INFO L276 IsEmpty]: Start isEmpty. Operand 82291 states and 91828 transitions. [2024-10-10 23:27:23,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-10-10 23:27:23,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:23,131 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:27:23,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 23:27:23,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:27:23,332 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:23,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:23,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1080448050, now seen corresponding path program 1 times [2024-10-10 23:27:23,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:23,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520267155] [2024-10-10 23:27:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:23,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 263 proven. 110 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-10 23:27:24,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:24,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520267155] [2024-10-10 23:27:24,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520267155] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:27:24,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976550729] [2024-10-10 23:27:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:24,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:27:24,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:27:24,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:27:24,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 23:27:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:24,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:27:24,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:27:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-10 23:27:24,380 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:27:24,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976550729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:24,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:27:24,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-10 23:27:24,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281824230] [2024-10-10 23:27:24,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:24,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:27:24,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:24,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:27:24,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:27:24,382 INFO L87 Difference]: Start difference. First operand 82291 states and 91828 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:27,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:27,009 INFO L93 Difference]: Finished difference Result 163792 states and 182862 transitions. [2024-10-10 23:27:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:27:27,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 375 [2024-10-10 23:27:27,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:27,148 INFO L225 Difference]: With dead ends: 163792 [2024-10-10 23:27:27,148 INFO L226 Difference]: Without dead ends: 82289 [2024-10-10 23:27:27,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:27:27,183 INFO L432 NwaCegarLoop]: 1342 mSDtfsCounter, 1084 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:27,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1421 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-10 23:27:27,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82289 states. [2024-10-10 23:27:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82289 to 82288. [2024-10-10 23:27:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82288 states, 82287 states have (on average 1.088628823507966) internal successors, (89580), 82287 states have internal predecessors, (89580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82288 states to 82288 states and 89580 transitions. [2024-10-10 23:27:28,061 INFO L78 Accepts]: Start accepts. Automaton has 82288 states and 89580 transitions. Word has length 375 [2024-10-10 23:27:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:28,062 INFO L471 AbstractCegarLoop]: Abstraction has 82288 states and 89580 transitions. [2024-10-10 23:27:28,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 82288 states and 89580 transitions. [2024-10-10 23:27:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-10-10 23:27:28,065 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:28,065 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:27:28,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 23:27:28,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:27:28,270 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:28,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:28,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1472205223, now seen corresponding path program 1 times [2024-10-10 23:27:28,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:28,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639261666] [2024-10-10 23:27:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:28,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-10 23:27:28,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:28,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639261666] [2024-10-10 23:27:28,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639261666] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:28,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:27:28,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:27:28,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198854399] [2024-10-10 23:27:28,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:28,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:27:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:27:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:27:28,652 INFO L87 Difference]: Start difference. First operand 82288 states and 89580 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:31,885 INFO L93 Difference]: Finished difference Result 189766 states and 208221 transitions. [2024-10-10 23:27:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:27:31,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 376 [2024-10-10 23:27:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:32,015 INFO L225 Difference]: With dead ends: 189766 [2024-10-10 23:27:32,015 INFO L226 Difference]: Without dead ends: 108266 [2024-10-10 23:27:32,048 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 [2024-10-10 23:27:32,048 INFO L432 NwaCegarLoop]: 820 mSDtfsCounter, 883 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:32,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 902 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-10 23:27:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108266 states. [2024-10-10 23:27:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108266 to 106673. [2024-10-10 23:27:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106673 states, 106672 states have (on average 1.0921141442927853) internal successors, (116498), 106672 states have internal predecessors, (116498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106673 states to 106673 states and 116498 transitions. [2024-10-10 23:27:33,353 INFO L78 Accepts]: Start accepts. Automaton has 106673 states and 116498 transitions. Word has length 376 [2024-10-10 23:27:33,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:33,354 INFO L471 AbstractCegarLoop]: Abstraction has 106673 states and 116498 transitions. [2024-10-10 23:27:33,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 106673 states and 116498 transitions. [2024-10-10 23:27:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-10-10 23:27:33,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:33,574 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:27:33,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-10 23:27:33,574 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:33,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1774132873, now seen corresponding path program 1 times [2024-10-10 23:27:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:33,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589258379] [2024-10-10 23:27:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:33,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 246 proven. 110 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-10 23:27:34,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:34,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589258379] [2024-10-10 23:27:34,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589258379] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:27:34,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443782831] [2024-10-10 23:27:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:34,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:27:34,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:27:34,396 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:27:34,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 23:27:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:34,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:27:34,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:27:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-10-10 23:27:35,083 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:27:35,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443782831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:35,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:27:35,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-10 23:27:35,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916674505] [2024-10-10 23:27:35,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:35,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:27:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:35,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:27:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:27:35,085 INFO L87 Difference]: Start difference. First operand 106673 states and 116498 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:37,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:37,599 INFO L93 Difference]: Finished difference Result 206270 states and 225610 transitions. [2024-10-10 23:27:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:27:37,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 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 409 [2024-10-10 23:27:37,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:37,715 INFO L225 Difference]: With dead ends: 206270 [2024-10-10 23:27:37,715 INFO L226 Difference]: Without dead ends: 110618 [2024-10-10 23:27:37,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:27:37,764 INFO L432 NwaCegarLoop]: 1031 mSDtfsCounter, 643 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:37,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1165 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-10 23:27:37,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110618 states. [2024-10-10 23:27:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110618 to 109034. [2024-10-10 23:27:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109034 states, 109033 states have (on average 1.0828373061366743) internal successors, (118065), 109033 states have internal predecessors, (118065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109034 states to 109034 states and 118065 transitions. [2024-10-10 23:27:39,034 INFO L78 Accepts]: Start accepts. Automaton has 109034 states and 118065 transitions. Word has length 409 [2024-10-10 23:27:39,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:39,035 INFO L471 AbstractCegarLoop]: Abstraction has 109034 states and 118065 transitions. [2024-10-10 23:27:39,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:39,035 INFO L276 IsEmpty]: Start isEmpty. Operand 109034 states and 118065 transitions. [2024-10-10 23:27:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-10-10 23:27:39,042 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:39,043 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:27:39,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 23:27:39,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-10 23:27:39,243 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:39,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:39,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1819478206, now seen corresponding path program 1 times [2024-10-10 23:27:39,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:39,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464807197] [2024-10-10 23:27:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:39,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-10 23:27:39,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:39,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464807197] [2024-10-10 23:27:39,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464807197] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:39,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:27:39,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:27:39,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107576980] [2024-10-10 23:27:39,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:39,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:27:39,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:39,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:27:39,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:27:39,812 INFO L87 Difference]: Start difference. First operand 109034 states and 118065 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:42,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:42,776 INFO L93 Difference]: Finished difference Result 242479 states and 264082 transitions. [2024-10-10 23:27:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:27:42,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 468 [2024-10-10 23:27:42,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:42,925 INFO L225 Difference]: With dead ends: 242479 [2024-10-10 23:27:42,926 INFO L226 Difference]: Without dead ends: 132659 [2024-10-10 23:27:42,973 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 [2024-10-10 23:27:42,973 INFO L432 NwaCegarLoop]: 1751 mSDtfsCounter, 721 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:42,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1894 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-10 23:27:43,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132659 states. [2024-10-10 23:27:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132659 to 131069. [2024-10-10 23:27:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131069 states, 131068 states have (on average 1.0732062746055482) internal successors, (140663), 131068 states have internal predecessors, (140663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:44,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131069 states to 131069 states and 140663 transitions. [2024-10-10 23:27:44,529 INFO L78 Accepts]: Start accepts. Automaton has 131069 states and 140663 transitions. Word has length 468 [2024-10-10 23:27:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:44,530 INFO L471 AbstractCegarLoop]: Abstraction has 131069 states and 140663 transitions. [2024-10-10 23:27:44,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:44,530 INFO L276 IsEmpty]: Start isEmpty. Operand 131069 states and 140663 transitions. [2024-10-10 23:27:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2024-10-10 23:27:44,543 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:44,544 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:27:44,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-10 23:27:44,544 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:44,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1671486359, now seen corresponding path program 1 times [2024-10-10 23:27:44,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:44,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916138493] [2024-10-10 23:27:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:44,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 709 proven. 75 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-10-10 23:27:45,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:45,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916138493] [2024-10-10 23:27:45,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916138493] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:27:45,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123156450] [2024-10-10 23:27:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:45,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:27:45,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:27:45,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:27:45,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 23:27:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:45,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:27:45,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:27:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 847 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-10-10 23:27:46,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:27:46,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123156450] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:46,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:27:46,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-10-10 23:27:46,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713560045] [2024-10-10 23:27:46,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:46,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:27:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:27:46,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:27:46,320 INFO L87 Difference]: Start difference. First operand 131069 states and 140663 transitions. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:49,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:49,375 INFO L93 Difference]: Finished difference Result 248758 states and 267807 transitions. [2024-10-10 23:27:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:27:49,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 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 542 [2024-10-10 23:27:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:49,514 INFO L225 Difference]: With dead ends: 248758 [2024-10-10 23:27:49,514 INFO L226 Difference]: Without dead ends: 133436 [2024-10-10 23:27:49,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:27:49,560 INFO L432 NwaCegarLoop]: 654 mSDtfsCounter, 2538 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 3259 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2538 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 3788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 3259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:49,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2538 Valid, 823 Invalid, 3788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 3259 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-10 23:27:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133436 states. [2024-10-10 23:27:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133436 to 131852. [2024-10-10 23:27:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131852 states, 131851 states have (on average 1.0726350198329933) internal successors, (141428), 131851 states have internal predecessors, (141428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:51,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131852 states to 131852 states and 141428 transitions. [2024-10-10 23:27:51,191 INFO L78 Accepts]: Start accepts. Automaton has 131852 states and 141428 transitions. Word has length 542 [2024-10-10 23:27:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:51,192 INFO L471 AbstractCegarLoop]: Abstraction has 131852 states and 141428 transitions. [2024-10-10 23:27:51,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 131852 states and 141428 transitions. [2024-10-10 23:27:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-10-10 23:27:51,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:51,213 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:27:51,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 23:27:51,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 23:27:51,414 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:51,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1791000243, now seen corresponding path program 1 times [2024-10-10 23:27:51,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:51,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405727048] [2024-10-10 23:27:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2024-10-10 23:27:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:51,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405727048] [2024-10-10 23:27:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405727048] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:51,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:27:51,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:27:51,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864866621] [2024-10-10 23:27:51,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:51,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:27:51,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:51,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:27:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:27:51,871 INFO L87 Difference]: Start difference. First operand 131852 states and 141428 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:55,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:27:55,497 INFO L93 Difference]: Finished difference Result 299142 states and 322737 transitions. [2024-10-10 23:27:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:27:55,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 600 [2024-10-10 23:27:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:27:55,697 INFO L225 Difference]: With dead ends: 299142 [2024-10-10 23:27:55,697 INFO L226 Difference]: Without dead ends: 179880 [2024-10-10 23:27:55,728 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 [2024-10-10 23:27:55,728 INFO L432 NwaCegarLoop]: 756 mSDtfsCounter, 916 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:27:55,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 854 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-10 23:27:55,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179880 states. [2024-10-10 23:27:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179880 to 148375. [2024-10-10 23:27:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148375 states, 148374 states have (on average 1.0655236092576867) internal successors, (158096), 148374 states have internal predecessors, (158096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148375 states to 148375 states and 158096 transitions. [2024-10-10 23:27:57,734 INFO L78 Accepts]: Start accepts. Automaton has 148375 states and 158096 transitions. Word has length 600 [2024-10-10 23:27:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:27:57,734 INFO L471 AbstractCegarLoop]: Abstraction has 148375 states and 158096 transitions. [2024-10-10 23:27:57,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:27:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 148375 states and 158096 transitions. [2024-10-10 23:27:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2024-10-10 23:27:57,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:27:57,757 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:27:57,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-10 23:27:57,757 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:27:57,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:27:57,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1754944945, now seen corresponding path program 1 times [2024-10-10 23:27:57,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:27:57,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233648139] [2024-10-10 23:27:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:27:57,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:27:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:27:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 599 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-10-10 23:27:58,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:27:58,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233648139] [2024-10-10 23:27:58,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233648139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:27:58,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:27:58,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:27:58,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157251059] [2024-10-10 23:27:58,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:27:58,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:27:58,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:27:58,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:27:58,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:27:58,205 INFO L87 Difference]: Start difference. First operand 148375 states and 158096 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)