./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label43.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/Problem12_label43.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 009b18d49acf284b9866fb4283bf61c04b940d5d5b8f73fcface32bff3af3727 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:27:46,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:27:46,920 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:27:46,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:27:46,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:27:46,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:27:46,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:27:46,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:27:46,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:27:46,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:27:46,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:27:46,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:27:46,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:27:46,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:27:46,960 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:27:46,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:27:46,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:27:46,963 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:27:46,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:27:46,964 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:27:46,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:27:46,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:27:46,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:27:46,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:27:46,969 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:27:46,969 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:27:46,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:27:46,969 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:27:46,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:27:46,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:27:46,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:27:46,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:27:46,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:27:46,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:27:46,972 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:27:46,973 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:27:46,973 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:27:46,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:27:46,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:27:46,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:27:46,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:27:46,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:27:46,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 009b18d49acf284b9866fb4283bf61c04b940d5d5b8f73fcface32bff3af3727 [2024-11-18 10:27:47,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:27:47,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:27:47,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:27:47,264 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:27:47,265 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:27:47,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label43.c [2024-11-18 10:27:48,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:27:49,311 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:27:49,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label43.c [2024-11-18 10:27:49,353 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d654f5a/67ad4e0c86904255a4128ce077780c75/FLAGedcc43b3b [2024-11-18 10:27:49,369 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d654f5a/67ad4e0c86904255a4128ce077780c75 [2024-11-18 10:27:49,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:27:49,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:27:49,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:27:49,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:27:49,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:27:49,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:27:49" (1/1) ... [2024-11-18 10:27:49,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671de2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:49, skipping insertion in model container [2024-11-18 10:27:49,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:27:49" (1/1) ... [2024-11-18 10:27:49,487 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:27:49,813 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label43.c[5259,5272] [2024-11-18 10:27:50,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:27:50,609 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:27:50,632 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/Problem12_label43.c[5259,5272] [2024-11-18 10:27:51,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:27:51,150 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:27:51,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51 WrapperNode [2024-11-18 10:27:51,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:27:51,152 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:27:51,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:27:51,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:27:51,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:51,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:51,534 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-18 10:27:51,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:27:51,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:27:51,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:27:51,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:27:51,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:51,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:51,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:51,849 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]. [2024-11-18 10:27:51,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:51,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:52,033 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:52,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:52,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:52,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:52,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:27:52,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:27:52,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:27:52,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:27:52,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (1/1) ... [2024-11-18 10:27:52,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:27:52,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:27:52,247 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) [2024-11-18 10:27:52,250 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 [2024-11-18 10:27:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:27:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:27:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:27:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:27:52,375 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:27:52,377 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:27:56,419 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-18 10:27:56,419 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:27:56,452 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:27:56,452 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:27:56,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:27:56 BoogieIcfgContainer [2024-11-18 10:27:56,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:27:56,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:27:56,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:27:56,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:27:56,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:27:49" (1/3) ... [2024-11-18 10:27:56,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c87e227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:27:56, skipping insertion in model container [2024-11-18 10:27:56,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:51" (2/3) ... [2024-11-18 10:27:56,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c87e227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:27:56, skipping insertion in model container [2024-11-18 10:27:56,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:27:56" (3/3) ... [2024-11-18 10:27:56,465 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label43.c [2024-11-18 10:27:56,483 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:27:56,484 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:27:56,586 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:27:56,593 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;@a7b538c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:27:56,594 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:27:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 10:27:56,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:27:56,612 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] [2024-11-18 10:27:56,613 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:27:56,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:27:56,619 INFO L85 PathProgramCache]: Analyzing trace with hash 751578873, now seen corresponding path program 1 times [2024-11-18 10:27:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:27:56,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498065157] [2024-11-18 10:27:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:56,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:27:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:27:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:27:56,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:27:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498065157] [2024-11-18 10:27:56,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498065157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:27:56,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:27:56,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:27:56,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481153571] [2024-11-18 10:27:56,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:27:56,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:27:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:27:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:27:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:27:57,032 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:00,526 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-18 10:28:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:00,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-18 10:28:00,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:00,552 INFO L225 Difference]: With dead ends: 2388 [2024-11-18 10:28:00,552 INFO L226 Difference]: Without dead ends: 1506 [2024-11-18 10:28:00,559 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 [2024-11-18 10:28:00,562 INFO L432 NwaCegarLoop]: 471 mSDtfsCounter, 793 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:00,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-18 10:28:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-18 10:28:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-18 10:28:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2024-11-18 10:28:00,688 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 41 [2024-11-18 10:28:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:00,689 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2024-11-18 10:28:00,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2024-11-18 10:28:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 10:28:00,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:00,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:28:00,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:28:00,695 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:00,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash 266829547, now seen corresponding path program 1 times [2024-11-18 10:28:00,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:00,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393917324] [2024-11-18 10:28:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:00,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:28:01,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393917324] [2024-11-18 10:28:01,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393917324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:01,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:01,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:01,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72756012] [2024-11-18 10:28:01,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:01,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:28:01,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:01,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:28:01,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:28:01,196 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:04,729 INFO L93 Difference]: Finished difference Result 4549 states and 7430 transitions. [2024-11-18 10:28:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:28:04,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-11-18 10:28:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:04,742 INFO L225 Difference]: With dead ends: 4549 [2024-11-18 10:28:04,742 INFO L226 Difference]: Without dead ends: 3008 [2024-11-18 10:28:04,745 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 [2024-11-18 10:28:04,747 INFO L432 NwaCegarLoop]: 638 mSDtfsCounter, 703 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3074 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 3803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:04,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 652 Invalid, 3803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3074 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-18 10:28:04,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2024-11-18 10:28:04,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2024-11-18 10:28:04,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.341536415031593) internal successors, (4034), 3007 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4034 transitions. [2024-11-18 10:28:04,808 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4034 transitions. Word has length 112 [2024-11-18 10:28:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:04,810 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4034 transitions. [2024-11-18 10:28:04,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:04,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4034 transitions. [2024-11-18 10:28:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 10:28:04,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:04,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:28:04,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:28:04,813 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:04,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash -13525974, now seen corresponding path program 1 times [2024-11-18 10:28:04,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:04,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301470874] [2024-11-18 10:28:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:04,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:28:05,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:05,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301470874] [2024-11-18 10:28:05,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301470874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:05,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:05,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:05,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110710813] [2024-11-18 10:28:05,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:05,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:28:05,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:05,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:28:05,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:28:05,210 INFO L87 Difference]: Start difference. First operand 3008 states and 4034 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:09,411 INFO L93 Difference]: Finished difference Result 9769 states and 12892 transitions. [2024-11-18 10:28:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:28:09,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2024-11-18 10:28:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:09,436 INFO L225 Difference]: With dead ends: 9769 [2024-11-18 10:28:09,436 INFO L226 Difference]: Without dead ends: 6763 [2024-11-18 10:28:09,442 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 [2024-11-18 10:28:09,443 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 2094 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 4841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:09,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 451 Invalid, 4841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-18 10:28:09,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2024-11-18 10:28:09,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2024-11-18 10:28:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.287488908606921) internal successors, (8706), 6762 states have internal predecessors, (8706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8706 transitions. [2024-11-18 10:28:09,583 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8706 transitions. Word has length 150 [2024-11-18 10:28:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:09,585 INFO L471 AbstractCegarLoop]: Abstraction has 6763 states and 8706 transitions. [2024-11-18 10:28:09,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8706 transitions. [2024-11-18 10:28:09,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-18 10:28:09,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:09,593 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:28:09,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:28:09,594 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:09,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:09,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1293517750, now seen corresponding path program 1 times [2024-11-18 10:28:09,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:09,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860571427] [2024-11-18 10:28:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:09,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 10:28:10,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:10,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860571427] [2024-11-18 10:28:10,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860571427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:10,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:10,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:10,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447827540] [2024-11-18 10:28:10,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:10,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:28:10,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:10,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:28:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:28:10,029 INFO L87 Difference]: Start difference. First operand 6763 states and 8706 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:13,077 INFO L93 Difference]: Finished difference Result 15816 states and 21396 transitions. [2024-11-18 10:28:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:28:13,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 253 [2024-11-18 10:28:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:13,103 INFO L225 Difference]: With dead ends: 15816 [2024-11-18 10:28:13,103 INFO L226 Difference]: Without dead ends: 9769 [2024-11-18 10:28:13,112 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 [2024-11-18 10:28:13,113 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 850 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:13,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 494 Invalid, 4018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 10:28:13,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2024-11-18 10:28:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2024-11-18 10:28:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.273192709399959) internal successors, (12434), 9766 states have internal predecessors, (12434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12434 transitions. [2024-11-18 10:28:13,285 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12434 transitions. Word has length 253 [2024-11-18 10:28:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:13,286 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 12434 transitions. [2024-11-18 10:28:13,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:13,287 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12434 transitions. [2024-11-18 10:28:13,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-18 10:28:13,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:13,291 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:28:13,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:28:13,292 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:13,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:13,293 INFO L85 PathProgramCache]: Analyzing trace with hash 325567862, now seen corresponding path program 1 times [2024-11-18 10:28:13,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:13,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225103487] [2024-11-18 10:28:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:13,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-18 10:28:13,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:13,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225103487] [2024-11-18 10:28:13,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225103487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:13,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:13,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:28:13,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920513284] [2024-11-18 10:28:13,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:13,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:13,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:13,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:13,518 INFO L87 Difference]: Start difference. First operand 9767 states and 12434 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:16,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:16,192 INFO L93 Difference]: Finished difference Result 26291 states and 34157 transitions. [2024-11-18 10:28:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:16,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2024-11-18 10:28:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:16,252 INFO L225 Difference]: With dead ends: 26291 [2024-11-18 10:28:16,252 INFO L226 Difference]: Without dead ends: 17277 [2024-11-18 10:28:16,262 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 [2024-11-18 10:28:16,264 INFO L432 NwaCegarLoop]: 592 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:16,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 598 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:28:16,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2024-11-18 10:28:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 16526. [2024-11-18 10:28:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16526 states, 16525 states have (on average 1.2063540090771558) internal successors, (19935), 16525 states have internal predecessors, (19935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 19935 transitions. [2024-11-18 10:28:16,548 INFO L78 Accepts]: Start accepts. Automaton has 16526 states and 19935 transitions. Word has length 256 [2024-11-18 10:28:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:16,550 INFO L471 AbstractCegarLoop]: Abstraction has 16526 states and 19935 transitions. [2024-11-18 10:28:16,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:16,550 INFO L276 IsEmpty]: Start isEmpty. Operand 16526 states and 19935 transitions. [2024-11-18 10:28:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 10:28:16,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:16,554 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:28:16,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:28:16,555 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:16,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash -74239357, now seen corresponding path program 1 times [2024-11-18 10:28:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:16,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454286603] [2024-11-18 10:28:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:16,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 10:28:16,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:16,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454286603] [2024-11-18 10:28:16,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454286603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:16,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:16,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:16,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311088051] [2024-11-18 10:28:16,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:16,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:16,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:16,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:16,797 INFO L87 Difference]: Start difference. First operand 16526 states and 19935 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:19,548 INFO L93 Difference]: Finished difference Result 32299 states and 39112 transitions. [2024-11-18 10:28:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:19,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 271 [2024-11-18 10:28:19,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:19,578 INFO L225 Difference]: With dead ends: 32299 [2024-11-18 10:28:19,579 INFO L226 Difference]: Without dead ends: 16526 [2024-11-18 10:28:19,593 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 [2024-11-18 10:28:19,595 INFO L432 NwaCegarLoop]: 1233 mSDtfsCounter, 696 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:19,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1241 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 10:28:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2024-11-18 10:28:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 15775. [2024-11-18 10:28:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.1770635222518067) internal successors, (18567), 15774 states have internal predecessors, (18567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 18567 transitions. [2024-11-18 10:28:19,818 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 18567 transitions. Word has length 271 [2024-11-18 10:28:19,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:19,819 INFO L471 AbstractCegarLoop]: Abstraction has 15775 states and 18567 transitions. [2024-11-18 10:28:19,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:19,820 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 18567 transitions. [2024-11-18 10:28:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 10:28:19,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:19,824 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:28:19,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:28:19,825 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:19,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:19,825 INFO L85 PathProgramCache]: Analyzing trace with hash 945852894, now seen corresponding path program 1 times [2024-11-18 10:28:19,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:19,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34064014] [2024-11-18 10:28:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:19,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-18 10:28:19,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34064014] [2024-11-18 10:28:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34064014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:19,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:19,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786985485] [2024-11-18 10:28:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:19,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:19,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:19,979 INFO L87 Difference]: Start difference. First operand 15775 states and 18567 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:22,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:22,721 INFO L93 Difference]: Finished difference Result 42062 states and 50217 transitions. [2024-11-18 10:28:22,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:22,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 272 [2024-11-18 10:28:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:22,773 INFO L225 Difference]: With dead ends: 42062 [2024-11-18 10:28:22,773 INFO L226 Difference]: Without dead ends: 27040 [2024-11-18 10:28:22,794 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 [2024-11-18 10:28:22,795 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 744 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:22,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 440 Invalid, 2889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 10:28:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27040 states. [2024-11-18 10:28:23,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27040 to 26289. [2024-11-18 10:28:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26289 states, 26288 states have (on average 1.163496652465003) internal successors, (30586), 26288 states have internal predecessors, (30586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26289 states to 26289 states and 30586 transitions. [2024-11-18 10:28:23,312 INFO L78 Accepts]: Start accepts. Automaton has 26289 states and 30586 transitions. Word has length 272 [2024-11-18 10:28:23,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:23,313 INFO L471 AbstractCegarLoop]: Abstraction has 26289 states and 30586 transitions. [2024-11-18 10:28:23,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 26289 states and 30586 transitions. [2024-11-18 10:28:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-18 10:28:23,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:23,320 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:28:23,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:28:23,320 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:23,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:23,321 INFO L85 PathProgramCache]: Analyzing trace with hash 376928467, now seen corresponding path program 1 times [2024-11-18 10:28:23,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:23,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667232117] [2024-11-18 10:28:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:23,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-18 10:28:23,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:23,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667232117] [2024-11-18 10:28:23,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667232117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:23,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:23,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:23,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324392942] [2024-11-18 10:28:23,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:23,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:23,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:23,585 INFO L87 Difference]: Start difference. First operand 26289 states and 30586 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:26,304 INFO L93 Difference]: Finished difference Result 66094 states and 77989 transitions. [2024-11-18 10:28:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 303 [2024-11-18 10:28:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:26,371 INFO L225 Difference]: With dead ends: 66094 [2024-11-18 10:28:26,371 INFO L226 Difference]: Without dead ends: 40558 [2024-11-18 10:28:26,403 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 [2024-11-18 10:28:26,405 INFO L432 NwaCegarLoop]: 1372 mSDtfsCounter, 715 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:26,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1380 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:28:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40558 states. [2024-11-18 10:28:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40558 to 40558. [2024-11-18 10:28:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40558 states, 40557 states have (on average 1.125970855832532) internal successors, (45666), 40557 states have internal predecessors, (45666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40558 states to 40558 states and 45666 transitions. [2024-11-18 10:28:26,902 INFO L78 Accepts]: Start accepts. Automaton has 40558 states and 45666 transitions. Word has length 303 [2024-11-18 10:28:26,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:26,902 INFO L471 AbstractCegarLoop]: Abstraction has 40558 states and 45666 transitions. [2024-11-18 10:28:26,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 40558 states and 45666 transitions. [2024-11-18 10:28:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-18 10:28:26,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:26,908 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:28:26,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:28:26,908 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:26,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:26,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1706993839, now seen corresponding path program 1 times [2024-11-18 10:28:26,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:26,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071222215] [2024-11-18 10:28:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:26,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-18 10:28:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:27,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071222215] [2024-11-18 10:28:27,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071222215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:27,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:27,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:27,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553516767] [2024-11-18 10:28:27,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:27,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:27,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:27,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:27,092 INFO L87 Difference]: Start difference. First operand 40558 states and 45666 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:29,875 INFO L93 Difference]: Finished difference Result 99889 states and 112915 transitions. [2024-11-18 10:28:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:29,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2024-11-18 10:28:29,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:29,947 INFO L225 Difference]: With dead ends: 99889 [2024-11-18 10:28:29,947 INFO L226 Difference]: Without dead ends: 60084 [2024-11-18 10:28:29,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:29,974 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 765 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:29,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 153 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:28:30,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60084 states. [2024-11-18 10:28:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60084 to 51072. [2024-11-18 10:28:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51072 states, 51071 states have (on average 1.1428011983317343) internal successors, (58364), 51071 states have internal predecessors, (58364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51072 states to 51072 states and 58364 transitions. [2024-11-18 10:28:30,498 INFO L78 Accepts]: Start accepts. Automaton has 51072 states and 58364 transitions. Word has length 318 [2024-11-18 10:28:30,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:30,498 INFO L471 AbstractCegarLoop]: Abstraction has 51072 states and 58364 transitions. [2024-11-18 10:28:30,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:30,499 INFO L276 IsEmpty]: Start isEmpty. Operand 51072 states and 58364 transitions. [2024-11-18 10:28:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2024-11-18 10:28:30,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:30,505 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:28:30,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:28:30,505 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:30,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash 427890008, now seen corresponding path program 1 times [2024-11-18 10:28:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:30,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49676392] [2024-11-18 10:28:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:30,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-18 10:28:30,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:30,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49676392] [2024-11-18 10:28:30,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49676392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:30,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:30,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:30,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887882735] [2024-11-18 10:28:30,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:30,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:30,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:30,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:30,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:30,747 INFO L87 Difference]: Start difference. First operand 51072 states and 58364 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:33,789 INFO L93 Difference]: Finished difference Result 121668 states and 141213 transitions. [2024-11-18 10:28:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 363 [2024-11-18 10:28:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:33,885 INFO L225 Difference]: With dead ends: 121668 [2024-11-18 10:28:33,885 INFO L226 Difference]: Without dead ends: 71349 [2024-11-18 10:28:33,935 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 [2024-11-18 10:28:33,935 INFO L432 NwaCegarLoop]: 1208 mSDtfsCounter, 682 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:33,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1216 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-18 10:28:34,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71349 states. [2024-11-18 10:28:34,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71349 to 69096. [2024-11-18 10:28:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69096 states, 69095 states have (on average 1.1251320645488097) internal successors, (77741), 69095 states have internal predecessors, (77741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69096 states to 69096 states and 77741 transitions. [2024-11-18 10:28:34,775 INFO L78 Accepts]: Start accepts. Automaton has 69096 states and 77741 transitions. Word has length 363 [2024-11-18 10:28:34,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:34,775 INFO L471 AbstractCegarLoop]: Abstraction has 69096 states and 77741 transitions. [2024-11-18 10:28:34,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 69096 states and 77741 transitions. [2024-11-18 10:28:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-18 10:28:34,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:34,788 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:28:34,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:28:34,789 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:34,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:34,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1903504849, now seen corresponding path program 1 times [2024-11-18 10:28:34,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:34,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040530100] [2024-11-18 10:28:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:34,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 196 proven. 333 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-18 10:28:35,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:35,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040530100] [2024-11-18 10:28:35,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040530100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:28:35,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155763101] [2024-11-18 10:28:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:35,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:28:35,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:28:35,751 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) [2024-11-18 10:28:35,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:28:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:35,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:28:35,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:28:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 10:28:36,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:28:36,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155763101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:36,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:28:36,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:28:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945836273] [2024-11-18 10:28:36,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:36,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:36,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:28:36,099 INFO L87 Difference]: Start difference. First operand 69096 states and 77741 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:38,736 INFO L93 Difference]: Finished difference Result 152459 states and 171622 transitions. [2024-11-18 10:28:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 479 [2024-11-18 10:28:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:38,817 INFO L225 Difference]: With dead ends: 152459 [2024-11-18 10:28:38,817 INFO L226 Difference]: Without dead ends: 84116 [2024-11-18 10:28:38,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:28:38,858 INFO L432 NwaCegarLoop]: 1109 mSDtfsCounter, 833 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:38,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1117 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 10:28:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84116 states. [2024-11-18 10:28:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84116 to 84116. [2024-11-18 10:28:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84116 states, 84115 states have (on average 1.1134042679664744) internal successors, (93654), 84115 states have internal predecessors, (93654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84116 states to 84116 states and 93654 transitions. [2024-11-18 10:28:40,112 INFO L78 Accepts]: Start accepts. Automaton has 84116 states and 93654 transitions. Word has length 479 [2024-11-18 10:28:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:40,113 INFO L471 AbstractCegarLoop]: Abstraction has 84116 states and 93654 transitions. [2024-11-18 10:28:40,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 84116 states and 93654 transitions. [2024-11-18 10:28:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2024-11-18 10:28:40,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:40,131 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:28:40,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 10:28:40,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 10:28:40,332 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:40,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:40,333 INFO L85 PathProgramCache]: Analyzing trace with hash -417505123, now seen corresponding path program 1 times [2024-11-18 10:28:40,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:40,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167748247] [2024-11-18 10:28:40,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:40,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2024-11-18 10:28:40,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:40,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167748247] [2024-11-18 10:28:40,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167748247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:40,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:40,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:40,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057922131] [2024-11-18 10:28:40,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:40,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:40,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:40,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:40,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:40,936 INFO L87 Difference]: Start difference. First operand 84116 states and 93654 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:43,848 INFO L93 Difference]: Finished difference Result 202025 states and 227041 transitions. [2024-11-18 10:28:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:43,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 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 520 [2024-11-18 10:28:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:43,971 INFO L225 Difference]: With dead ends: 202025 [2024-11-18 10:28:43,972 INFO L226 Difference]: Without dead ends: 114156 [2024-11-18 10:28:44,206 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 [2024-11-18 10:28:44,207 INFO L432 NwaCegarLoop]: 1274 mSDtfsCounter, 654 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:44,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1282 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 10:28:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114156 states. [2024-11-18 10:28:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114156 to 108899. [2024-11-18 10:28:45,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108899 states, 108898 states have (on average 1.101296626200665) internal successors, (119929), 108898 states have internal predecessors, (119929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108899 states to 108899 states and 119929 transitions. [2024-11-18 10:28:45,890 INFO L78 Accepts]: Start accepts. Automaton has 108899 states and 119929 transitions. Word has length 520 [2024-11-18 10:28:45,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:45,890 INFO L471 AbstractCegarLoop]: Abstraction has 108899 states and 119929 transitions. [2024-11-18 10:28:45,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 108899 states and 119929 transitions. [2024-11-18 10:28:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2024-11-18 10:28:45,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:45,903 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:28:45,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:28:45,903 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:45,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash -104616442, now seen corresponding path program 1 times [2024-11-18 10:28:45,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:45,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189430558] [2024-11-18 10:28:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:45,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 592 proven. 229 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 10:28:47,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:47,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189430558] [2024-11-18 10:28:47,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189430558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:28:47,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67605545] [2024-11-18 10:28:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:47,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:28:47,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:28:47,118 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) [2024-11-18 10:28:47,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:28:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:47,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:28:47,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:28:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 737 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 10:28:47,867 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:28:47,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67605545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:47,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:28:47,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 10:28:47,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317750468] [2024-11-18 10:28:47,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:47,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:47,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:47,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:47,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:28:47,870 INFO L87 Difference]: Start difference. First operand 108899 states and 119929 transitions. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:51,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:51,097 INFO L93 Difference]: Finished difference Result 244081 states and 268107 transitions. [2024-11-18 10:28:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:51,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 611 [2024-11-18 10:28:51,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:51,253 INFO L225 Difference]: With dead ends: 244081 [2024-11-18 10:28:51,253 INFO L226 Difference]: Without dead ends: 135935 [2024-11-18 10:28:51,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:28:51,320 INFO L432 NwaCegarLoop]: 1330 mSDtfsCounter, 595 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:51,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1338 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 10:28:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135935 states. [2024-11-18 10:28:52,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135935 to 131429. [2024-11-18 10:28:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131429 states, 131428 states have (on average 1.0868079861216788) internal successors, (142837), 131428 states have internal predecessors, (142837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131429 states to 131429 states and 142837 transitions. [2024-11-18 10:28:53,034 INFO L78 Accepts]: Start accepts. Automaton has 131429 states and 142837 transitions. Word has length 611 [2024-11-18 10:28:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:53,035 INFO L471 AbstractCegarLoop]: Abstraction has 131429 states and 142837 transitions. [2024-11-18 10:28:53,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 131429 states and 142837 transitions. [2024-11-18 10:28:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2024-11-18 10:28:53,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:53,049 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:28:53,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 10:28:53,249 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,SelfDestructingSolverStorable12 [2024-11-18 10:28:53,250 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:53,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:53,250 INFO L85 PathProgramCache]: Analyzing trace with hash -297864749, now seen corresponding path program 1 times [2024-11-18 10:28:53,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:53,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469043851] [2024-11-18 10:28:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:53,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 757 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-18 10:28:54,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:54,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469043851] [2024-11-18 10:28:54,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469043851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:54,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:54,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482359726] [2024-11-18 10:28:54,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:54,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:54,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:54,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:54,343 INFO L87 Difference]: Start difference. First operand 131429 states and 142837 transitions. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:28:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:58,132 INFO L93 Difference]: Finished difference Result 279378 states and 302851 transitions. [2024-11-18 10:28:58,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:58,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 621 [2024-11-18 10:28:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:58,334 INFO L225 Difference]: With dead ends: 279378 [2024-11-18 10:28:58,334 INFO L226 Difference]: Without dead ends: 148702 [2024-11-18 10:28:58,402 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 [2024-11-18 10:28:58,402 INFO L432 NwaCegarLoop]: 1340 mSDtfsCounter, 590 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:58,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1348 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-18 10:28:58,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148702 states. [2024-11-18 10:28:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148702 to 142694. [2024-11-18 10:28:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142694 states, 142693 states have (on average 1.0793731998065779) internal successors, (154019), 142693 states have internal predecessors, (154019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:29:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142694 states to 142694 states and 154019 transitions. [2024-11-18 10:29:00,389 INFO L78 Accepts]: Start accepts. Automaton has 142694 states and 154019 transitions. Word has length 621 [2024-11-18 10:29:00,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:29:00,389 INFO L471 AbstractCegarLoop]: Abstraction has 142694 states and 154019 transitions. [2024-11-18 10:29:00,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:29:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 142694 states and 154019 transitions. [2024-11-18 10:29:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2024-11-18 10:29:00,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:29:00,445 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:29:00,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:29:00,446 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:29:00,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:29:00,446 INFO L85 PathProgramCache]: Analyzing trace with hash -800968748, now seen corresponding path program 1 times [2024-11-18 10:29:00,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:29:00,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681624726] [2024-11-18 10:29:00,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:29:00,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:29:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:29:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 831 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-18 10:29:01,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:29:01,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681624726] [2024-11-18 10:29:01,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681624726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:29:01,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:29:01,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:29:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516016348] [2024-11-18 10:29:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:29:01,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:29:01,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:29:01,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:29:01,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:29:01,301 INFO L87 Difference]: Start difference. First operand 142694 states and 154019 transitions. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)