./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem14_label33.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aec3d6b735697765f122fd4969787ab3e5c22f1789977e4ce823d6b216b50af2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:05:24,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:05:24,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:05:24,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:05:24,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:05:24,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:05:24,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:05:24,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:05:24,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:05:24,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:05:24,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:05:24,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:05:24,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:05:24,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:05:24,231 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:05:24,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:05:24,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:05:24,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:05:24,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:05:24,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:05:24,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:05:24,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:05:24,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:05:24,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:05:24,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:05:24,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:05:24,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:05:24,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:05:24,242 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:05:24,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:05:24,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:05:24,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:05:24,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:05:24,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:05:24,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:05:24,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:05:24,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:05:24,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:05:24,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:05:24,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:05:24,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:05:24,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:05:24,247 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aec3d6b735697765f122fd4969787ab3e5c22f1789977e4ce823d6b216b50af2 [2024-11-16 04:05:24,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:05:24,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:05:24,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:05:24,537 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:05:24,538 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:05:24,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label33.c [2024-11-16 04:05:26,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:05:26,325 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:05:26,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label33.c [2024-11-16 04:05:26,346 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cad14606e/39bb5cb92acc434987590079564bb89e/FLAG66e400baf [2024-11-16 04:05:26,644 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cad14606e/39bb5cb92acc434987590079564bb89e [2024-11-16 04:05:26,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:05:26,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:05:26,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:05:26,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:05:26,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:05:26,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:05:26" (1/1) ... [2024-11-16 04:05:26,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa46e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:26, skipping insertion in model container [2024-11-16 04:05:26,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:05:26" (1/1) ... [2024-11-16 04:05:26,700 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:05:26,943 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label33.c[5937,5950] [2024-11-16 04:05:27,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:05:27,120 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:05:27,159 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label33.c[5937,5950] [2024-11-16 04:05:27,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:05:27,253 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:05:27,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27 WrapperNode [2024-11-16 04:05:27,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:05:27,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:05:27,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:05:27,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:05:27,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,280 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,390 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2024-11-16 04:05:27,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:05:27,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:05:27,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:05:27,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:05:27,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,456 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:05:27,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,494 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:05:27,523 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:05:27,523 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:05:27,524 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:05:27,524 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (1/1) ... [2024-11-16 04:05:27,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:05:27,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:05:27,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 04:05:27,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 04:05:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:05:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:05:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:05:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:05:27,691 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:05:27,694 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:05:28,900 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-11-16 04:05:28,900 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:05:28,952 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:05:28,955 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:05:28,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:05:28 BoogieIcfgContainer [2024-11-16 04:05:28,956 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:05:28,961 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:05:28,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:05:28,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:05:28,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:05:26" (1/3) ... [2024-11-16 04:05:28,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eafb327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:05:28, skipping insertion in model container [2024-11-16 04:05:28,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:27" (2/3) ... [2024-11-16 04:05:28,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eafb327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:05:28, skipping insertion in model container [2024-11-16 04:05:28,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:05:28" (3/3) ... [2024-11-16 04:05:28,974 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label33.c [2024-11-16 04:05:29,006 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:05:29,006 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:05:29,129 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:05:29,135 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;@4c5c97e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:05:29,136 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:05:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 04:05:29,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:29,155 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:29,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:29,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:29,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1415853290, now seen corresponding path program 1 times [2024-11-16 04:05:29,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:29,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33204983] [2024-11-16 04:05:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:29,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:05:29,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:29,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33204983] [2024-11-16 04:05:29,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33204983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:29,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:05:29,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:05:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635920643] [2024-11-16 04:05:29,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:29,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:05:29,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:29,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:05:29,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:29,625 INFO L87 Difference]: Start difference. First operand has 248 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:30,570 INFO L93 Difference]: Finished difference Result 675 states and 1206 transitions. [2024-11-16 04:05:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:05:30,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-11-16 04:05:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:30,583 INFO L225 Difference]: With dead ends: 675 [2024-11-16 04:05:30,583 INFO L226 Difference]: Without dead ends: 363 [2024-11-16 04:05:30,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:30,592 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 152 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:30,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 98 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 04:05:30,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-16 04:05:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-11-16 04:05:30,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.5165745856353592) internal successors, (549), 362 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 549 transitions. [2024-11-16 04:05:30,648 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 549 transitions. Word has length 60 [2024-11-16 04:05:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:30,649 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 549 transitions. [2024-11-16 04:05:30,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 549 transitions. [2024-11-16 04:05:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-16 04:05:30,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:30,653 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:30,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:05:30,654 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:30,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1208929549, now seen corresponding path program 1 times [2024-11-16 04:05:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:30,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491132283] [2024-11-16 04:05:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:30,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:05:30,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:30,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491132283] [2024-11-16 04:05:30,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491132283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:30,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:05:30,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:05:30,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748341455] [2024-11-16 04:05:30,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:30,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:05:30,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:30,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:05:30,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:30,885 INFO L87 Difference]: Start difference. First operand 363 states and 549 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:31,550 INFO L93 Difference]: Finished difference Result 1082 states and 1641 transitions. [2024-11-16 04:05:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:05:31,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2024-11-16 04:05:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:31,555 INFO L225 Difference]: With dead ends: 1082 [2024-11-16 04:05:31,555 INFO L226 Difference]: Without dead ends: 721 [2024-11-16 04:05:31,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:31,560 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 122 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:31,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 99 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 04:05:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-16 04:05:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2024-11-16 04:05:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.351388888888889) internal successors, (973), 720 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 973 transitions. [2024-11-16 04:05:31,597 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 973 transitions. Word has length 136 [2024-11-16 04:05:31,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:31,601 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 973 transitions. [2024-11-16 04:05:31,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:31,602 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 973 transitions. [2024-11-16 04:05:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 04:05:31,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:31,604 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:31,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:05:31,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:31,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:31,607 INFO L85 PathProgramCache]: Analyzing trace with hash -76207805, now seen corresponding path program 1 times [2024-11-16 04:05:31,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:31,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842287256] [2024-11-16 04:05:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:31,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:05:32,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:32,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842287256] [2024-11-16 04:05:32,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842287256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:32,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:05:32,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:05:32,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47626454] [2024-11-16 04:05:32,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:32,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:05:32,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:32,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:05:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:05:32,019 INFO L87 Difference]: Start difference. First operand 721 states and 973 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:32,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:32,967 INFO L93 Difference]: Finished difference Result 1977 states and 2583 transitions. [2024-11-16 04:05:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:05:32,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-11-16 04:05:32,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:32,973 INFO L225 Difference]: With dead ends: 1977 [2024-11-16 04:05:32,973 INFO L226 Difference]: Without dead ends: 1258 [2024-11-16 04:05:32,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:05:32,976 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 421 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:32,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 128 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 04:05:32,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2024-11-16 04:05:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1258. [2024-11-16 04:05:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 1.2346857597454257) internal successors, (1552), 1257 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1552 transitions. [2024-11-16 04:05:33,022 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1552 transitions. Word has length 140 [2024-11-16 04:05:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:33,023 INFO L471 AbstractCegarLoop]: Abstraction has 1258 states and 1552 transitions. [2024-11-16 04:05:33,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:33,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1552 transitions. [2024-11-16 04:05:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-16 04:05:33,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:33,033 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:33,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:05:33,034 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:33,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:33,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1767072211, now seen corresponding path program 1 times [2024-11-16 04:05:33,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:33,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396953902] [2024-11-16 04:05:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:33,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 04:05:33,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:33,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396953902] [2024-11-16 04:05:33,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396953902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:33,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:05:33,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:05:33,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969656875] [2024-11-16 04:05:33,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:33,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:05:33,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:33,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:05:33,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:05:33,468 INFO L87 Difference]: Start difference. First operand 1258 states and 1552 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:34,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:34,243 INFO L93 Difference]: Finished difference Result 2723 states and 3371 transitions. [2024-11-16 04:05:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:05:34,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-16 04:05:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:34,254 INFO L225 Difference]: With dead ends: 2723 [2024-11-16 04:05:34,254 INFO L226 Difference]: Without dead ends: 1616 [2024-11-16 04:05:34,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:05:34,258 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 102 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:34,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 127 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 04:05:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2024-11-16 04:05:34,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1616. [2024-11-16 04:05:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 1.1213622291021672) internal successors, (1811), 1615 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 1811 transitions. [2024-11-16 04:05:34,287 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 1811 transitions. Word has length 221 [2024-11-16 04:05:34,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:34,288 INFO L471 AbstractCegarLoop]: Abstraction has 1616 states and 1811 transitions. [2024-11-16 04:05:34,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:34,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 1811 transitions. [2024-11-16 04:05:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-16 04:05:34,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:34,292 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:34,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:05:34,292 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:34,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:34,293 INFO L85 PathProgramCache]: Analyzing trace with hash 989325460, now seen corresponding path program 1 times [2024-11-16 04:05:34,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:34,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512563276] [2024-11-16 04:05:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:34,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 218 proven. 132 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-16 04:05:34,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512563276] [2024-11-16 04:05:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512563276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:05:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580879155] [2024-11-16 04:05:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:34,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:05:34,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:05:34,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:05:34,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:05:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:34,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:05:34,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:05:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-16 04:05:35,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:05:35,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580879155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:35,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:05:35,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 04:05:35,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60656132] [2024-11-16 04:05:35,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:35,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:05:35,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:35,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:05:35,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:05:35,089 INFO L87 Difference]: Start difference. First operand 1616 states and 1811 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:35,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:35,687 INFO L93 Difference]: Finished difference Result 3409 states and 3922 transitions. [2024-11-16 04:05:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:05:35,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 349 [2024-11-16 04:05:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:35,694 INFO L225 Difference]: With dead ends: 3409 [2024-11-16 04:05:35,694 INFO L226 Difference]: Without dead ends: 1974 [2024-11-16 04:05:35,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:05:35,697 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 127 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:35,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 259 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 04:05:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-11-16 04:05:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1974. [2024-11-16 04:05:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 1.131272174353776) internal successors, (2232), 1973 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2232 transitions. [2024-11-16 04:05:35,744 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2232 transitions. Word has length 349 [2024-11-16 04:05:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:35,745 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 2232 transitions. [2024-11-16 04:05:35,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2232 transitions. [2024-11-16 04:05:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-16 04:05:35,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:35,749 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:35,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:05:35,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:05:35,954 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:35,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash -708368054, now seen corresponding path program 1 times [2024-11-16 04:05:35,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:35,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656514233] [2024-11-16 04:05:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 302 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:05:36,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:36,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656514233] [2024-11-16 04:05:36,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656514233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:05:36,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730404063] [2024-11-16 04:05:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:36,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:05:36,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:05:36,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:05:36,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:05:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:36,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 04:05:36,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:05:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-16 04:05:38,170 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:05:38,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730404063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:38,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:05:38,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 04:05:38,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400159929] [2024-11-16 04:05:38,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:38,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:05:38,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:05:38,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:05:38,178 INFO L87 Difference]: Start difference. First operand 1974 states and 2232 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:38,869 INFO L93 Difference]: Finished difference Result 4722 states and 5432 transitions. [2024-11-16 04:05:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:05:38,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 353 [2024-11-16 04:05:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:38,879 INFO L225 Difference]: With dead ends: 4722 [2024-11-16 04:05:38,879 INFO L226 Difference]: Without dead ends: 2929 [2024-11-16 04:05:38,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:05:38,884 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 133 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:38,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 60 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 04:05:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2024-11-16 04:05:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2690. [2024-11-16 04:05:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2689 states have (on average 1.1126812941613984) internal successors, (2992), 2689 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:38,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 2992 transitions. [2024-11-16 04:05:38,935 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 2992 transitions. Word has length 353 [2024-11-16 04:05:38,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:38,935 INFO L471 AbstractCegarLoop]: Abstraction has 2690 states and 2992 transitions. [2024-11-16 04:05:38,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 2992 transitions. [2024-11-16 04:05:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-16 04:05:38,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:38,940 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:05:38,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 04:05:39,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 04:05:39,142 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:39,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash -685543534, now seen corresponding path program 1 times [2024-11-16 04:05:39,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:39,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485273475] [2024-11-16 04:05:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:39,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-16 04:05:39,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:39,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485273475] [2024-11-16 04:05:39,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485273475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:39,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:05:39,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:05:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682161523] [2024-11-16 04:05:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:39,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:05:39,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:05:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:39,382 INFO L87 Difference]: Start difference. First operand 2690 states and 2992 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:39,946 INFO L93 Difference]: Finished difference Result 5736 states and 6464 transitions. [2024-11-16 04:05:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:05:39,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2024-11-16 04:05:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:39,957 INFO L225 Difference]: With dead ends: 5736 [2024-11-16 04:05:39,958 INFO L226 Difference]: Without dead ends: 3227 [2024-11-16 04:05:39,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:39,964 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 129 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:39,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 83 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 04:05:39,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2024-11-16 04:05:40,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2690. [2024-11-16 04:05:40,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2689 states have (on average 1.1126812941613984) internal successors, (2992), 2689 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 2992 transitions. [2024-11-16 04:05:40,013 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 2992 transitions. Word has length 380 [2024-11-16 04:05:40,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:40,014 INFO L471 AbstractCegarLoop]: Abstraction has 2690 states and 2992 transitions. [2024-11-16 04:05:40,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 2992 transitions. [2024-11-16 04:05:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-11-16 04:05:40,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:40,020 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:40,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:05:40,020 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:40,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash 863176021, now seen corresponding path program 1 times [2024-11-16 04:05:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:40,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873676507] [2024-11-16 04:05:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:40,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-16 04:05:40,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873676507] [2024-11-16 04:05:40,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873676507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:40,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:05:40,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:05:40,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451146555] [2024-11-16 04:05:40,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:40,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:05:40,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:40,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:05:40,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:40,244 INFO L87 Difference]: Start difference. First operand 2690 states and 2992 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:40,782 INFO L93 Difference]: Finished difference Result 3767 states and 4246 transitions. [2024-11-16 04:05:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:05:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 387 [2024-11-16 04:05:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:40,795 INFO L225 Difference]: With dead ends: 3767 [2024-11-16 04:05:40,795 INFO L226 Difference]: Without dead ends: 3764 [2024-11-16 04:05:40,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:40,800 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 127 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:40,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 22 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 04:05:40,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2024-11-16 04:05:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3048. [2024-11-16 04:05:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 3047 states have (on average 1.1342303905480802) internal successors, (3456), 3047 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 3456 transitions. [2024-11-16 04:05:40,854 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 3456 transitions. Word has length 387 [2024-11-16 04:05:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:40,855 INFO L471 AbstractCegarLoop]: Abstraction has 3048 states and 3456 transitions. [2024-11-16 04:05:40,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 3456 transitions. [2024-11-16 04:05:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2024-11-16 04:05:40,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:40,860 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:40,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:05:40,861 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:40,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash -979959213, now seen corresponding path program 1 times [2024-11-16 04:05:40,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:40,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141336619] [2024-11-16 04:05:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:40,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2024-11-16 04:05:41,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:41,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141336619] [2024-11-16 04:05:41,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141336619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:41,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:05:41,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:05:41,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252301401] [2024-11-16 04:05:41,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:41,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:05:41,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:05:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:41,125 INFO L87 Difference]: Start difference. First operand 3048 states and 3456 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:41,726 INFO L93 Difference]: Finished difference Result 6631 states and 7601 transitions. [2024-11-16 04:05:41,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:05:41,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 465 [2024-11-16 04:05:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:41,738 INFO L225 Difference]: With dead ends: 6631 [2024-11-16 04:05:41,738 INFO L226 Difference]: Without dead ends: 3764 [2024-11-16 04:05:41,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:41,743 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 114 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:41,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 68 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 04:05:41,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2024-11-16 04:05:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3406. [2024-11-16 04:05:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 1.120704845814978) internal successors, (3816), 3405 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 3816 transitions. [2024-11-16 04:05:41,800 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 3816 transitions. Word has length 465 [2024-11-16 04:05:41,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:41,801 INFO L471 AbstractCegarLoop]: Abstraction has 3406 states and 3816 transitions. [2024-11-16 04:05:41,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 3816 transitions. [2024-11-16 04:05:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2024-11-16 04:05:41,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:41,807 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:05:41,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:05:41,807 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:41,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1983307017, now seen corresponding path program 1 times [2024-11-16 04:05:41,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:41,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010464192] [2024-11-16 04:05:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 972 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-11-16 04:05:42,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:42,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010464192] [2024-11-16 04:05:42,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010464192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:42,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:05:42,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:05:42,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405113190] [2024-11-16 04:05:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:42,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:05:42,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:42,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:05:42,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:42,382 INFO L87 Difference]: Start difference. First operand 3406 states and 3816 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:42,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:42,887 INFO L93 Difference]: Finished difference Result 7168 states and 8044 transitions. [2024-11-16 04:05:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:05:42,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 662 [2024-11-16 04:05:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:42,900 INFO L225 Difference]: With dead ends: 7168 [2024-11-16 04:05:42,900 INFO L226 Difference]: Without dead ends: 3943 [2024-11-16 04:05:42,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:42,905 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 51 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:42,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 84 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 04:05:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2024-11-16 04:05:42,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3943. [2024-11-16 04:05:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3943 states, 3942 states have (on average 1.110603754439371) internal successors, (4378), 3942 states have internal predecessors, (4378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 4378 transitions. [2024-11-16 04:05:42,997 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 4378 transitions. Word has length 662 [2024-11-16 04:05:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:42,997 INFO L471 AbstractCegarLoop]: Abstraction has 3943 states and 4378 transitions. [2024-11-16 04:05:42,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 4378 transitions. [2024-11-16 04:05:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2024-11-16 04:05:43,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:43,006 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:43,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:05:43,006 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:43,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1958291737, now seen corresponding path program 1 times [2024-11-16 04:05:43,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:43,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840187197] [2024-11-16 04:05:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:43,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1735 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-16 04:05:43,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:43,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840187197] [2024-11-16 04:05:43,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840187197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:43,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:05:43,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:05:43,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411002714] [2024-11-16 04:05:43,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:43,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:05:43,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:05:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:05:43,679 INFO L87 Difference]: Start difference. First operand 3943 states and 4378 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:44,299 INFO L93 Difference]: Finished difference Result 7735 states and 8604 transitions. [2024-11-16 04:05:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:05:44,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 743 [2024-11-16 04:05:44,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:44,310 INFO L225 Difference]: With dead ends: 7735 [2024-11-16 04:05:44,311 INFO L226 Difference]: Without dead ends: 3943 [2024-11-16 04:05:44,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:05:44,315 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 142 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:44,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 23 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 04:05:44,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2024-11-16 04:05:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3943. [2024-11-16 04:05:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3943 states, 3942 states have (on average 1.0700152207001523) internal successors, (4218), 3942 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 4218 transitions. [2024-11-16 04:05:44,373 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 4218 transitions. Word has length 743 [2024-11-16 04:05:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:44,374 INFO L471 AbstractCegarLoop]: Abstraction has 3943 states and 4218 transitions. [2024-11-16 04:05:44,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 4218 transitions. [2024-11-16 04:05:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2024-11-16 04:05:44,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:44,381 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:44,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:05:44,381 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:44,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1747989768, now seen corresponding path program 2 times [2024-11-16 04:05:44,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:44,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47501866] [2024-11-16 04:05:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:44,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 1258 proven. 68 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-16 04:05:45,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:45,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47501866] [2024-11-16 04:05:45,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47501866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:05:45,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676331302] [2024-11-16 04:05:45,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 04:05:45,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:05:45,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:05:45,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:05:45,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:05:45,423 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 04:05:45,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 04:05:45,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 04:05:45,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:05:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 1123 proven. 203 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-16 04:05:47,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:05:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 1007 proven. 319 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-16 04:05:48,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676331302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:05:48,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:05:48,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-16 04:05:48,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141402068] [2024-11-16 04:05:48,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:05:48,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 04:05:48,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:48,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 04:05:48,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-16 04:05:48,727 INFO L87 Difference]: Start difference. First operand 3943 states and 4218 transitions. Second operand has 10 states, 10 states have (on average 79.3) internal successors, (793), 9 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:50,725 INFO L93 Difference]: Finished difference Result 8958 states and 9620 transitions. [2024-11-16 04:05:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 04:05:50,726 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 79.3) internal successors, (793), 9 states have internal predecessors, (793), 0 states have call successors, (0), 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 769 [2024-11-16 04:05:50,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:50,740 INFO L225 Difference]: With dead ends: 8958 [2024-11-16 04:05:50,740 INFO L226 Difference]: Without dead ends: 5196 [2024-11-16 04:05:50,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1545 GetRequests, 1532 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2024-11-16 04:05:50,745 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1677 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:50,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 58 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 04:05:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2024-11-16 04:05:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 3764. [2024-11-16 04:05:50,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.0659048631411108) internal successors, (4011), 3763 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:50,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 4011 transitions. [2024-11-16 04:05:50,799 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 4011 transitions. Word has length 769 [2024-11-16 04:05:50,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:50,800 INFO L471 AbstractCegarLoop]: Abstraction has 3764 states and 4011 transitions. [2024-11-16 04:05:50,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 79.3) internal successors, (793), 9 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 4011 transitions. [2024-11-16 04:05:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2024-11-16 04:05:50,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:50,808 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2024-11-16 04:05:50,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 04:05:51,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:05:51,009 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:51,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:51,010 INFO L85 PathProgramCache]: Analyzing trace with hash -800095154, now seen corresponding path program 1 times [2024-11-16 04:05:51,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:51,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102664967] [2024-11-16 04:05:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:51,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2374 backedges. 1534 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-16 04:05:51,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:51,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102664967] [2024-11-16 04:05:51,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102664967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:51,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:05:51,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:05:51,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380186650] [2024-11-16 04:05:51,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:51,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:05:51,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:51,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:05:51,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:51,486 INFO L87 Difference]: Start difference. First operand 3764 states and 4011 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:52,025 INFO L93 Difference]: Finished difference Result 8242 states and 8791 transitions. [2024-11-16 04:05:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:05:52,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 875 [2024-11-16 04:05:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:52,036 INFO L225 Difference]: With dead ends: 8242 [2024-11-16 04:05:52,036 INFO L226 Difference]: Without dead ends: 4480 [2024-11-16 04:05:52,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:05:52,041 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 108 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:52,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 37 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 04:05:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2024-11-16 04:05:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 4122. [2024-11-16 04:05:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 1.0572676534821646) internal successors, (4357), 4121 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 4357 transitions. [2024-11-16 04:05:52,098 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 4357 transitions. Word has length 875 [2024-11-16 04:05:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:52,099 INFO L471 AbstractCegarLoop]: Abstraction has 4122 states and 4357 transitions. [2024-11-16 04:05:52,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 4357 transitions. [2024-11-16 04:05:52,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2024-11-16 04:05:52,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:52,110 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:52,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 04:05:52,110 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:52,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash 792967169, now seen corresponding path program 1 times [2024-11-16 04:05:52,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:52,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218940732] [2024-11-16 04:05:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:52,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2392 backedges. 1582 proven. 93 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2024-11-16 04:05:52,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:52,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218940732] [2024-11-16 04:05:52,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218940732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:05:52,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744171691] [2024-11-16 04:05:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:52,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:05:52,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:05:52,963 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:05:52,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 04:05:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:53,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:05:53,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:05:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2392 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 1994 trivial. 0 not checked. [2024-11-16 04:05:53,355 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:05:53,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744171691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:53,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:05:53,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 04:05:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343437782] [2024-11-16 04:05:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:53,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:05:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:05:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:05:53,358 INFO L87 Difference]: Start difference. First operand 4122 states and 4357 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:53,711 INFO L93 Difference]: Finished difference Result 5199 states and 5469 transitions. [2024-11-16 04:05:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:05:53,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 893 [2024-11-16 04:05:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:53,725 INFO L225 Difference]: With dead ends: 5199 [2024-11-16 04:05:53,725 INFO L226 Difference]: Without dead ends: 5196 [2024-11-16 04:05:53,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 892 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:05:53,728 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 144 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:53,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 15 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 04:05:53,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2024-11-16 04:05:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 4122. [2024-11-16 04:05:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 1.0572676534821646) internal successors, (4357), 4121 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 4357 transitions. [2024-11-16 04:05:53,784 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 4357 transitions. Word has length 893 [2024-11-16 04:05:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:53,785 INFO L471 AbstractCegarLoop]: Abstraction has 4122 states and 4357 transitions. [2024-11-16 04:05:53,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 4357 transitions. [2024-11-16 04:05:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2024-11-16 04:05:53,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:05:53,794 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:53,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 04:05:53,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:05:53,996 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:05:53,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:05:53,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1737377644, now seen corresponding path program 1 times [2024-11-16 04:05:53,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:05:53,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109228868] [2024-11-16 04:05:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:53,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:05:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1654 proven. 93 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2024-11-16 04:05:54,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:05:54,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109228868] [2024-11-16 04:05:54,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109228868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:05:54,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968858742] [2024-11-16 04:05:54,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:05:54,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:05:54,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:05:54,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:05:54,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 04:05:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:05:55,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:05:55,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:05:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 2084 trivial. 0 not checked. [2024-11-16 04:05:55,136 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:05:55,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968858742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:05:55,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:05:55,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 04:05:55,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528513313] [2024-11-16 04:05:55,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:05:55,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:05:55,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:05:55,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:05:55,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:05:55,139 INFO L87 Difference]: Start difference. First operand 4122 states and 4357 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:05:55,496 INFO L93 Difference]: Finished difference Result 9492 states and 9996 transitions. [2024-11-16 04:05:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:05:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 911 [2024-11-16 04:05:55,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:05:55,497 INFO L225 Difference]: With dead ends: 9492 [2024-11-16 04:05:55,497 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 04:05:55,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 910 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:05:55,505 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 123 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:05:55,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 247 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 04:05:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 04:05:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 04:05:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 04:05:55,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 911 [2024-11-16 04:05:55,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:05:55,507 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 04:05:55,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:05:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 04:05:55,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 04:05:55,511 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 04:05:55,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 04:05:55,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 04:05:55,718 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:05:55,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 04:05:56,391 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 04:05:56,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:05:56 BoogieIcfgContainer [2024-11-16 04:05:56,408 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 04:05:56,408 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 04:05:56,408 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 04:05:56,408 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 04:05:56,409 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:05:28" (3/4) ... [2024-11-16 04:05:56,413 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 04:05:56,442 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-16 04:05:56,443 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 04:05:56,444 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 04:05:56,445 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 04:05:56,593 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 04:05:56,594 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 04:05:56,594 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 04:05:56,595 INFO L158 Benchmark]: Toolchain (without parser) took 29947.35ms. Allocated memory was 159.4MB in the beginning and 778.0MB in the end (delta: 618.7MB). Free memory was 101.7MB in the beginning and 496.4MB in the end (delta: -394.7MB). Peak memory consumption was 225.2MB. Max. memory is 16.1GB. [2024-11-16 04:05:56,595 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:05:56,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.59ms. Allocated memory is still 159.4MB. Free memory was 101.2MB in the beginning and 66.4MB in the end (delta: 34.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-11-16 04:05:56,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 135.54ms. Allocated memory was 159.4MB in the beginning and 224.4MB in the end (delta: 65.0MB). Free memory was 66.4MB in the beginning and 187.6MB in the end (delta: -121.2MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2024-11-16 04:05:56,597 INFO L158 Benchmark]: Boogie Preprocessor took 131.08ms. Allocated memory is still 224.4MB. Free memory was 187.6MB in the beginning and 176.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-16 04:05:56,597 INFO L158 Benchmark]: IcfgBuilder took 1436.23ms. Allocated memory is still 224.4MB. Free memory was 176.0MB in the beginning and 185.3MB in the end (delta: -9.3MB). Peak memory consumption was 123.7MB. Max. memory is 16.1GB. [2024-11-16 04:05:56,598 INFO L158 Benchmark]: TraceAbstraction took 27447.00ms. Allocated memory was 224.4MB in the beginning and 778.0MB in the end (delta: 553.6MB). Free memory was 184.4MB in the beginning and 512.1MB in the end (delta: -327.7MB). Peak memory consumption was 466.1MB. Max. memory is 16.1GB. [2024-11-16 04:05:56,598 INFO L158 Benchmark]: Witness Printer took 185.75ms. Allocated memory is still 778.0MB. Free memory was 511.1MB in the beginning and 496.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-16 04:05:56,603 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 604.59ms. Allocated memory is still 159.4MB. Free memory was 101.2MB in the beginning and 66.4MB in the end (delta: 34.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 135.54ms. Allocated memory was 159.4MB in the beginning and 224.4MB in the end (delta: 65.0MB). Free memory was 66.4MB in the beginning and 187.6MB in the end (delta: -121.2MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 131.08ms. Allocated memory is still 224.4MB. Free memory was 187.6MB in the beginning and 176.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * IcfgBuilder took 1436.23ms. Allocated memory is still 224.4MB. Free memory was 176.0MB in the beginning and 185.3MB in the end (delta: -9.3MB). Peak memory consumption was 123.7MB. Max. memory is 16.1GB. * TraceAbstraction took 27447.00ms. Allocated memory was 224.4MB in the beginning and 778.0MB in the end (delta: 553.6MB). Free memory was 184.4MB in the beginning and 512.1MB in the end (delta: -327.7MB). Peak memory consumption was 466.1MB. Max. memory is 16.1GB. * Witness Printer took 185.75ms. Allocated memory is still 778.0MB. Free memory was 511.1MB in the beginning and 496.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 188]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 248 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 26.6s, OverallIterations: 15, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3672 SdHoareTripleChecker+Valid, 10.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3672 mSDsluCounter, 1408 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 158 mSDsCounter, 1338 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9916 IncrementalHoareTripleChecker+Invalid, 11254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1338 mSolverCounterUnsat, 1250 mSDtfsCounter, 9916 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4093 GetRequests, 4048 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4122occurred in iteration=13, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 4714 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 10619 NumberOfCodeBlocks, 10619 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 11367 ConstructedInterpolants, 0 QuantifiedInterpolants, 39870 SizeOfPredicates, 3 NumberOfNonLiveVariables, 4087 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 23386/24426 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-16 04:05:56,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE