./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.twocount2c.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash ae56bcfc435405d456e1dc5e8920e6da28d699f35561354769dbf7e31b8f91d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 18:13:03,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 18:13:04,020 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-18 18:13:04,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 18:13:04,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 18:13:04,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 18:13:04,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 18:13:04,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 18:13:04,056 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 18:13:04,056 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 18:13:04,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 18:13:04,057 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 18:13:04,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 18:13:04,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 18:13:04,060 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 18:13:04,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 18:13:04,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 18:13:04,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 18:13:04,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 18:13:04,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 18:13:04,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 18:13:04,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 18:13:04,062 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 18:13:04,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 18:13:04,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 18:13:04,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 18:13:04,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 18:13:04,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 18:13:04,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 18:13:04,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:13:04,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 18:13:04,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 18:13:04,064 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 18:13:04,064 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 18:13:04,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 18:13:04,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 18:13:04,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 18:13:04,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 18:13:04,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 18:13:04,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae56bcfc435405d456e1dc5e8920e6da28d699f35561354769dbf7e31b8f91d6 [2024-11-18 18:13:04,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 18:13:04,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 18:13:04,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 18:13:04,298 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 18:13:04,298 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 18:13:04,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2024-11-18 18:13:05,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 18:13:05,833 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 18:13:05,834 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2024-11-18 18:13:05,842 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a449bba34/e56c7cb4960a442091d0ae4aa79750a8/FLAG93f314f75 [2024-11-18 18:13:05,858 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a449bba34/e56c7cb4960a442091d0ae4aa79750a8 [2024-11-18 18:13:05,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 18:13:05,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 18:13:05,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 18:13:05,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 18:13:05,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 18:13:05,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:13:05" (1/1) ... [2024-11-18 18:13:05,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342589f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:05, skipping insertion in model container [2024-11-18 18:13:05,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:13:05" (1/1) ... [2024-11-18 18:13:05,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 18:13:06,050 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/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1260,1273] [2024-11-18 18:13:06,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:13:06,095 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 18:13:06,105 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/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1260,1273] [2024-11-18 18:13:06,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:13:06,144 INFO L204 MainTranslator]: Completed translation [2024-11-18 18:13:06,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06 WrapperNode [2024-11-18 18:13:06,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 18:13:06,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 18:13:06,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 18:13:06,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 18:13:06,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,266 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 167 [2024-11-18 18:13:06,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 18:13:06,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 18:13:06,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 18:13:06,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 18:13:06,276 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,293 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 18:13:06,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 18:13:06,321 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 18:13:06,321 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 18:13:06,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 18:13:06,322 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (1/1) ... [2024-11-18 18:13:06,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:13:06,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:06,350 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 18:13:06,352 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 18:13:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 18:13:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 18:13:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 18:13:06,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 18:13:06,460 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 18:13:06,462 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 18:13:06,802 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-11-18 18:13:06,802 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 18:13:06,815 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 18:13:06,815 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 18:13:06,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:13:06 BoogieIcfgContainer [2024-11-18 18:13:06,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 18:13:06,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 18:13:06,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 18:13:06,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 18:13:06,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:13:05" (1/3) ... [2024-11-18 18:13:06,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179530d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:13:06, skipping insertion in model container [2024-11-18 18:13:06,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:13:06" (2/3) ... [2024-11-18 18:13:06,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179530d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:13:06, skipping insertion in model container [2024-11-18 18:13:06,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:13:06" (3/3) ... [2024-11-18 18:13:06,824 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount2c.c [2024-11-18 18:13:06,836 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 18:13:06,837 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 18:13:06,886 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 18:13:06,891 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;@2daf63c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 18:13:06,891 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 18:13:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 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 18:13:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 18:13:06,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:06,903 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] [2024-11-18 18:13:06,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:06,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash 295366475, now seen corresponding path program 1 times [2024-11-18 18:13:06,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:06,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120125019] [2024-11-18 18:13:06,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:06,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:07,096 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 18:13:07,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:07,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120125019] [2024-11-18 18:13:07,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120125019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:07,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:07,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 18:13:07,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888356369] [2024-11-18 18:13:07,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:07,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 18:13:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 18:13:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 18:13:07,121 INFO L87 Difference]: Start difference. First operand has 52 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 18:13:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:07,141 INFO L93 Difference]: Finished difference Result 91 states and 132 transitions. [2024-11-18 18:13:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 18:13:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2024-11-18 18:13:07,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:07,152 INFO L225 Difference]: With dead ends: 91 [2024-11-18 18:13:07,152 INFO L226 Difference]: Without dead ends: 49 [2024-11-18 18:13:07,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 18:13:07,159 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:07,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:13:07,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-18 18:13:07,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-18 18:13:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 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 18:13:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2024-11-18 18:13:07,189 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 69 transitions. Word has length 23 [2024-11-18 18:13:07,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:07,190 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 69 transitions. [2024-11-18 18:13:07,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 18:13:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2024-11-18 18:13:07,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 18:13:07,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:07,191 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] [2024-11-18 18:13:07,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 18:13:07,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:07,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:07,193 INFO L85 PathProgramCache]: Analyzing trace with hash -513980151, now seen corresponding path program 1 times [2024-11-18 18:13:07,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:07,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213922222] [2024-11-18 18:13:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:07,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:07,508 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 18:13:07,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:07,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213922222] [2024-11-18 18:13:07,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213922222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:07,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:07,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:13:07,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940793671] [2024-11-18 18:13:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:07,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:13:07,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:07,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:13:07,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:13:07,516 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 18:13:07,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:07,598 INFO L93 Difference]: Finished difference Result 92 states and 130 transitions. [2024-11-18 18:13:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:13:07,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2024-11-18 18:13:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:07,601 INFO L225 Difference]: With dead ends: 92 [2024-11-18 18:13:07,601 INFO L226 Difference]: Without dead ends: 53 [2024-11-18 18:13:07,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 18:13:07,602 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:07,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 139 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:13:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-18 18:13:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-11-18 18:13:07,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 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 18:13:07,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2024-11-18 18:13:07,608 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 23 [2024-11-18 18:13:07,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:07,608 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2024-11-18 18:13:07,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 18:13:07,609 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2024-11-18 18:13:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 18:13:07,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:07,610 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] [2024-11-18 18:13:07,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 18:13:07,610 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:07,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1380097225, now seen corresponding path program 1 times [2024-11-18 18:13:07,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:07,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674071072] [2024-11-18 18:13:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:07,747 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 18:13:07,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:07,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674071072] [2024-11-18 18:13:07,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674071072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:07,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:07,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:13:07,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418353090] [2024-11-18 18:13:07,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:07,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:13:07,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:13:07,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:13:07,749 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 18:13:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:07,782 INFO L93 Difference]: Finished difference Result 96 states and 133 transitions. [2024-11-18 18:13:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:13:07,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2024-11-18 18:13:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:07,784 INFO L225 Difference]: With dead ends: 96 [2024-11-18 18:13:07,785 INFO L226 Difference]: Without dead ends: 54 [2024-11-18 18:13:07,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:13:07,786 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:07,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:13:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-18 18:13:07,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-18 18:13:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 53 states have internal predecessors, (74), 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 18:13:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2024-11-18 18:13:07,791 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 24 [2024-11-18 18:13:07,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:07,791 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2024-11-18 18:13:07,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 18:13:07,791 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2024-11-18 18:13:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 18:13:07,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:07,792 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] [2024-11-18 18:13:07,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 18:13:07,792 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:07,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:07,793 INFO L85 PathProgramCache]: Analyzing trace with hash -973063290, now seen corresponding path program 1 times [2024-11-18 18:13:07,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:07,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379076056] [2024-11-18 18:13:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:07,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:07,936 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 18:13:07,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:07,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379076056] [2024-11-18 18:13:07,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379076056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:07,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:07,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:13:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585462861] [2024-11-18 18:13:07,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:07,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:13:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:13:07,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:13:07,941 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 18:13:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:07,963 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-11-18 18:13:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:13:07,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2024-11-18 18:13:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:07,965 INFO L225 Difference]: With dead ends: 58 [2024-11-18 18:13:07,965 INFO L226 Difference]: Without dead ends: 56 [2024-11-18 18:13:07,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:13:07,966 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:07,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:13:07,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-18 18:13:07,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-18 18:13:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 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 18:13:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-11-18 18:13:07,974 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 25 [2024-11-18 18:13:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:07,975 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-11-18 18:13:07,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 18:13:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-11-18 18:13:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 18:13:07,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:07,977 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] [2024-11-18 18:13:07,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 18:13:07,977 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:07,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash -98495654, now seen corresponding path program 1 times [2024-11-18 18:13:07,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:07,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94232640] [2024-11-18 18:13:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:07,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:08,074 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 18:13:08,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:08,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94232640] [2024-11-18 18:13:08,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94232640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:08,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:08,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:13:08,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244782906] [2024-11-18 18:13:08,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:08,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:13:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:08,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:13:08,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:13:08,076 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 18:13:08,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:08,131 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2024-11-18 18:13:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:13:08,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2024-11-18 18:13:08,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:08,132 INFO L225 Difference]: With dead ends: 104 [2024-11-18 18:13:08,132 INFO L226 Difference]: Without dead ends: 58 [2024-11-18 18:13:08,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:13:08,134 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:08,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:13:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-18 18:13:08,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-18 18:13:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 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 18:13:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-11-18 18:13:08,144 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 26 [2024-11-18 18:13:08,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:08,144 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-11-18 18:13:08,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 18:13:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-11-18 18:13:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 18:13:08,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:08,145 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] [2024-11-18 18:13:08,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 18:13:08,145 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:08,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash 143636191, now seen corresponding path program 1 times [2024-11-18 18:13:08,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:08,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068821329] [2024-11-18 18:13:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:08,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:08,396 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 18:13:08,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:08,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068821329] [2024-11-18 18:13:08,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068821329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:08,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:08,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:13:08,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861916499] [2024-11-18 18:13:08,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:08,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:13:08,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:08,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:13:08,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:13:08,398 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 18:13:08,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:08,428 INFO L93 Difference]: Finished difference Result 136 states and 181 transitions. [2024-11-18 18:13:08,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:13:08,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2024-11-18 18:13:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:08,429 INFO L225 Difference]: With dead ends: 136 [2024-11-18 18:13:08,430 INFO L226 Difference]: Without dead ends: 88 [2024-11-18 18:13:08,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:13:08,431 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 28 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:08,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 241 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:13:08,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-18 18:13:08,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2024-11-18 18:13:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.353658536585366) internal successors, (111), 82 states have internal predecessors, (111), 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 18:13:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2024-11-18 18:13:08,436 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 111 transitions. Word has length 27 [2024-11-18 18:13:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:08,436 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 111 transitions. [2024-11-18 18:13:08,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 18:13:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 111 transitions. [2024-11-18 18:13:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 18:13:08,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:08,438 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:13:08,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 18:13:08,438 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:08,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:08,439 INFO L85 PathProgramCache]: Analyzing trace with hash -978979684, now seen corresponding path program 1 times [2024-11-18 18:13:08,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:08,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761786471] [2024-11-18 18:13:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:08,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:08,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:08,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761786471] [2024-11-18 18:13:08,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761786471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:13:08,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313573267] [2024-11-18 18:13:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:08,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:08,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:08,762 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 18:13:08,764 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 18:13:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:08,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-18 18:13:08,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:13:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 18:13:09,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:13:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:09,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313573267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:13:09,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:13:09,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 18 [2024-11-18 18:13:09,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314115663] [2024-11-18 18:13:09,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:13:09,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 18:13:09,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:09,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 18:13:09,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-18 18:13:09,354 INFO L87 Difference]: Start difference. First operand 83 states and 111 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 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 18:13:09,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:09,539 INFO L93 Difference]: Finished difference Result 171 states and 226 transitions. [2024-11-18 18:13:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:13:09,540 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 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 50 [2024-11-18 18:13:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:09,541 INFO L225 Difference]: With dead ends: 171 [2024-11-18 18:13:09,541 INFO L226 Difference]: Without dead ends: 123 [2024-11-18 18:13:09,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2024-11-18 18:13:09,544 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 163 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:09,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 421 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:13:09,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-18 18:13:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2024-11-18 18:13:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 87 states have internal predecessors, (118), 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 18:13:09,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 118 transitions. [2024-11-18 18:13:09,553 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 118 transitions. Word has length 50 [2024-11-18 18:13:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:09,555 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 118 transitions. [2024-11-18 18:13:09,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 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 18:13:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 118 transitions. [2024-11-18 18:13:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 18:13:09,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:09,557 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:13:09,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 18:13:09,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:09,758 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:09,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash -421630039, now seen corresponding path program 1 times [2024-11-18 18:13:09,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:09,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471413497] [2024-11-18 18:13:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:09,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:10,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:10,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471413497] [2024-11-18 18:13:10,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471413497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:13:10,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960480793] [2024-11-18 18:13:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:10,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:10,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:10,024 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 18:13:10,028 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 18:13:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:10,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 18:13:10,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:13:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:10,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:13:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:10,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960480793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:13:10,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:13:10,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-18 18:13:10,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71512106] [2024-11-18 18:13:10,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:13:10,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 18:13:10,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:10,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 18:13:10,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-18 18:13:10,497 INFO L87 Difference]: Start difference. First operand 88 states and 118 transitions. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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 18:13:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:10,886 INFO L93 Difference]: Finished difference Result 228 states and 303 transitions. [2024-11-18 18:13:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 18:13:10,887 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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 51 [2024-11-18 18:13:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:10,889 INFO L225 Difference]: With dead ends: 228 [2024-11-18 18:13:10,889 INFO L226 Difference]: Without dead ends: 150 [2024-11-18 18:13:10,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-11-18 18:13:10,890 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 87 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:10,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 545 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:13:10,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-18 18:13:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 88. [2024-11-18 18:13:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 87 states have internal predecessors, (118), 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 18:13:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 118 transitions. [2024-11-18 18:13:10,901 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 118 transitions. Word has length 51 [2024-11-18 18:13:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:10,903 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 118 transitions. [2024-11-18 18:13:10,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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 18:13:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 118 transitions. [2024-11-18 18:13:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 18:13:10,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:10,904 INFO L215 NwaCegarLoop]: trace histogram [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 18:13:10,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 18:13:11,105 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,SelfDestructingSolverStorable7 [2024-11-18 18:13:11,106 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:11,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:11,106 INFO L85 PathProgramCache]: Analyzing trace with hash -587990621, now seen corresponding path program 1 times [2024-11-18 18:13:11,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:11,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331333668] [2024-11-18 18:13:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:11,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:11,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:11,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331333668] [2024-11-18 18:13:11,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331333668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:11,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:11,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:13:11,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689413242] [2024-11-18 18:13:11,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:11,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:13:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:13:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:13:11,360 INFO L87 Difference]: Start difference. First operand 88 states and 118 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 18:13:11,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:11,456 INFO L93 Difference]: Finished difference Result 221 states and 291 transitions. [2024-11-18 18:13:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:13:11,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2024-11-18 18:13:11,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:11,458 INFO L225 Difference]: With dead ends: 221 [2024-11-18 18:13:11,458 INFO L226 Difference]: Without dead ends: 143 [2024-11-18 18:13:11,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:13:11,459 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 45 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:11,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 256 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:13:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-18 18:13:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 114. [2024-11-18 18:13:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 113 states have internal predecessors, (149), 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 18:13:11,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 149 transitions. [2024-11-18 18:13:11,471 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 149 transitions. Word has length 52 [2024-11-18 18:13:11,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:11,471 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 149 transitions. [2024-11-18 18:13:11,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 18:13:11,471 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 149 transitions. [2024-11-18 18:13:11,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 18:13:11,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:11,472 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:13:11,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 18:13:11,472 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:11,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:11,472 INFO L85 PathProgramCache]: Analyzing trace with hash -550870329, now seen corresponding path program 1 times [2024-11-18 18:13:11,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:11,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232204275] [2024-11-18 18:13:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:11,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 18:13:11,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:11,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232204275] [2024-11-18 18:13:11,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232204275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:11,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:11,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:13:11,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586727918] [2024-11-18 18:13:11,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:11,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:13:11,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:11,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:13:11,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:13:11,605 INFO L87 Difference]: Start difference. First operand 114 states and 149 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 18:13:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:11,647 INFO L93 Difference]: Finished difference Result 256 states and 328 transitions. [2024-11-18 18:13:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:13:11,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 52 [2024-11-18 18:13:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:11,648 INFO L225 Difference]: With dead ends: 256 [2024-11-18 18:13:11,648 INFO L226 Difference]: Without dead ends: 178 [2024-11-18 18:13:11,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:13:11,649 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 27 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:11,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 303 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:13:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-18 18:13:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 124. [2024-11-18 18:13:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.3333333333333333) internal successors, (164), 123 states have internal predecessors, (164), 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 18:13:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 164 transitions. [2024-11-18 18:13:11,653 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 164 transitions. Word has length 52 [2024-11-18 18:13:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:11,654 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 164 transitions. [2024-11-18 18:13:11,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 18:13:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 164 transitions. [2024-11-18 18:13:11,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 18:13:11,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:11,654 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:13:11,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 18:13:11,654 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:11,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:11,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1765079492, now seen corresponding path program 1 times [2024-11-18 18:13:11,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:11,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485266836] [2024-11-18 18:13:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:11,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:11,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:11,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485266836] [2024-11-18 18:13:11,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485266836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:11,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:11,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:13:11,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330942882] [2024-11-18 18:13:11,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:11,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:13:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:11,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:13:11,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:13:11,973 INFO L87 Difference]: Start difference. First operand 124 states and 164 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 18:13:12,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:12,128 INFO L93 Difference]: Finished difference Result 270 states and 349 transitions. [2024-11-18 18:13:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:13:12,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2024-11-18 18:13:12,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:12,130 INFO L225 Difference]: With dead ends: 270 [2024-11-18 18:13:12,130 INFO L226 Difference]: Without dead ends: 180 [2024-11-18 18:13:12,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:13:12,130 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 41 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:12,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 256 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:13:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-18 18:13:12,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 158. [2024-11-18 18:13:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.267515923566879) internal successors, (199), 157 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:13:12,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 199 transitions. [2024-11-18 18:13:12,140 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 199 transitions. Word has length 53 [2024-11-18 18:13:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:12,140 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 199 transitions. [2024-11-18 18:13:12,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 18:13:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 199 transitions. [2024-11-18 18:13:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 18:13:12,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:12,141 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:13:12,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 18:13:12,141 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:12,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1108900487, now seen corresponding path program 1 times [2024-11-18 18:13:12,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:12,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212381025] [2024-11-18 18:13:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:12,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:12,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212381025] [2024-11-18 18:13:12,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212381025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:13:12,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754349948] [2024-11-18 18:13:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:12,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:12,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:12,623 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:13:12,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 18:13:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:12,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-18 18:13:12,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:13:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 18:13:12,909 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 18:13:12,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754349948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:12,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 18:13:12,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-18 18:13:12,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054879195] [2024-11-18 18:13:12,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:12,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:13:12,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:12,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:13:12,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-18 18:13:12,911 INFO L87 Difference]: Start difference. First operand 158 states and 199 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 18:13:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:13,099 INFO L93 Difference]: Finished difference Result 326 states and 418 transitions. [2024-11-18 18:13:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:13:13,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 53 [2024-11-18 18:13:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:13,100 INFO L225 Difference]: With dead ends: 326 [2024-11-18 18:13:13,101 INFO L226 Difference]: Without dead ends: 240 [2024-11-18 18:13:13,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-18 18:13:13,101 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 95 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:13,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 314 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:13:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-18 18:13:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 174. [2024-11-18 18:13:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.2947976878612717) internal successors, (224), 173 states have internal predecessors, (224), 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 18:13:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 224 transitions. [2024-11-18 18:13:13,105 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 224 transitions. Word has length 53 [2024-11-18 18:13:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:13,106 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 224 transitions. [2024-11-18 18:13:13,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 18:13:13,106 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 224 transitions. [2024-11-18 18:13:13,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 18:13:13,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:13,106 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:13:13,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 18:13:13,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:13,311 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:13,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1884145206, now seen corresponding path program 1 times [2024-11-18 18:13:13,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:13,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868538081] [2024-11-18 18:13:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:13,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 18:13:13,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:13,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868538081] [2024-11-18 18:13:13,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868538081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:13,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:13,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:13:13,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958294471] [2024-11-18 18:13:13,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:13,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:13:13,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:13,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:13:13,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:13:13,471 INFO L87 Difference]: Start difference. First operand 174 states and 224 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 18:13:13,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:13,576 INFO L93 Difference]: Finished difference Result 340 states and 440 transitions. [2024-11-18 18:13:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:13:13,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 54 [2024-11-18 18:13:13,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:13,578 INFO L225 Difference]: With dead ends: 340 [2024-11-18 18:13:13,578 INFO L226 Difference]: Without dead ends: 240 [2024-11-18 18:13:13,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:13:13,578 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 78 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:13,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 277 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:13:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-18 18:13:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 178. [2024-11-18 18:13:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.2881355932203389) internal successors, (228), 177 states have internal predecessors, (228), 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 18:13:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 228 transitions. [2024-11-18 18:13:13,582 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 228 transitions. Word has length 54 [2024-11-18 18:13:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:13,582 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 228 transitions. [2024-11-18 18:13:13,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 18:13:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 228 transitions. [2024-11-18 18:13:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 18:13:13,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:13,583 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:13:13,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 18:13:13,583 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:13,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:13,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1172750294, now seen corresponding path program 1 times [2024-11-18 18:13:13,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:13,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87381640] [2024-11-18 18:13:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:13,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 18:13:13,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:13,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87381640] [2024-11-18 18:13:13,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87381640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:13,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:13,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:13:13,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782043753] [2024-11-18 18:13:13,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:13,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:13:13,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:13,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:13:13,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:13:13,758 INFO L87 Difference]: Start difference. First operand 178 states and 228 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 18:13:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:13,833 INFO L93 Difference]: Finished difference Result 312 states and 410 transitions. [2024-11-18 18:13:13,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:13:13,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 54 [2024-11-18 18:13:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:13,834 INFO L225 Difference]: With dead ends: 312 [2024-11-18 18:13:13,834 INFO L226 Difference]: Without dead ends: 208 [2024-11-18 18:13:13,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:13:13,835 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 61 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:13,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 210 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:13:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-18 18:13:13,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 186. [2024-11-18 18:13:13,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.2972972972972974) internal successors, (240), 185 states have internal predecessors, (240), 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 18:13:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 240 transitions. [2024-11-18 18:13:13,839 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 240 transitions. Word has length 54 [2024-11-18 18:13:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:13,839 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 240 transitions. [2024-11-18 18:13:13,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 18:13:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 240 transitions. [2024-11-18 18:13:13,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 18:13:13,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:13,840 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:13:13,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 18:13:13,840 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:13,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash 341705372, now seen corresponding path program 1 times [2024-11-18 18:13:13,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:13,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304863918] [2024-11-18 18:13:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:14,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:14,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304863918] [2024-11-18 18:13:14,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304863918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:14,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:14,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:13:14,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983225141] [2024-11-18 18:13:14,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:14,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:13:14,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:14,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:13:14,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:13:14,035 INFO L87 Difference]: Start difference. First operand 186 states and 240 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 18:13:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:14,089 INFO L93 Difference]: Finished difference Result 336 states and 444 transitions. [2024-11-18 18:13:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:13:14,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2024-11-18 18:13:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:14,090 INFO L225 Difference]: With dead ends: 336 [2024-11-18 18:13:14,091 INFO L226 Difference]: Without dead ends: 222 [2024-11-18 18:13:14,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:13:14,091 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 20 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:14,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 182 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:13:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-18 18:13:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2024-11-18 18:13:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.2954545454545454) internal successors, (285), 220 states have internal predecessors, (285), 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 18:13:14,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 285 transitions. [2024-11-18 18:13:14,096 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 285 transitions. Word has length 55 [2024-11-18 18:13:14,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:14,096 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 285 transitions. [2024-11-18 18:13:14,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 18:13:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 285 transitions. [2024-11-18 18:13:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 18:13:14,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:14,097 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:13:14,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 18:13:14,097 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:14,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:14,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1297937652, now seen corresponding path program 1 times [2024-11-18 18:13:14,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:14,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448534234] [2024-11-18 18:13:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:14,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:14,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:14,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448534234] [2024-11-18 18:13:14,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448534234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:14,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:14,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:13:14,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19890742] [2024-11-18 18:13:14,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:14,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:13:14,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:14,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:13:14,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:13:14,447 INFO L87 Difference]: Start difference. First operand 221 states and 285 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 18:13:14,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:14,518 INFO L93 Difference]: Finished difference Result 342 states and 452 transitions. [2024-11-18 18:13:14,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:13:14,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 56 [2024-11-18 18:13:14,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:14,519 INFO L225 Difference]: With dead ends: 342 [2024-11-18 18:13:14,519 INFO L226 Difference]: Without dead ends: 230 [2024-11-18 18:13:14,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:13:14,520 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:14,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 176 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:13:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-18 18:13:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2024-11-18 18:13:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.2951541850220265) internal successors, (294), 227 states have internal predecessors, (294), 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 18:13:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 294 transitions. [2024-11-18 18:13:14,525 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 294 transitions. Word has length 56 [2024-11-18 18:13:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:14,525 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 294 transitions. [2024-11-18 18:13:14,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 18:13:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 294 transitions. [2024-11-18 18:13:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 18:13:14,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:14,527 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:13:14,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 18:13:14,528 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:14,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:14,529 INFO L85 PathProgramCache]: Analyzing trace with hash 618326395, now seen corresponding path program 1 times [2024-11-18 18:13:14,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:14,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275159479] [2024-11-18 18:13:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:14,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:15,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:15,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275159479] [2024-11-18 18:13:15,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275159479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:13:15,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56984818] [2024-11-18 18:13:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:15,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:15,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:15,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:13:15,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 18:13:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:15,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-18 18:13:15,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:13:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:15,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:13:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:17,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56984818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:13:17,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:13:17,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 15] total 32 [2024-11-18 18:13:17,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820339299] [2024-11-18 18:13:17,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:13:17,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 18:13:17,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:17,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 18:13:17,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2024-11-18 18:13:17,264 INFO L87 Difference]: Start difference. First operand 228 states and 294 transitions. Second operand has 32 states, 32 states have (on average 4.46875) internal successors, (143), 32 states have internal predecessors, (143), 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 18:13:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:18,086 INFO L93 Difference]: Finished difference Result 470 states and 616 transitions. [2024-11-18 18:13:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 18:13:18,087 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.46875) internal successors, (143), 32 states have internal predecessors, (143), 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 57 [2024-11-18 18:13:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:18,089 INFO L225 Difference]: With dead ends: 470 [2024-11-18 18:13:18,089 INFO L226 Difference]: Without dead ends: 358 [2024-11-18 18:13:18,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=299, Invalid=1423, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 18:13:18,090 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 130 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:18,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 522 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 18:13:18,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-18 18:13:18,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 243. [2024-11-18 18:13:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.2768595041322315) internal successors, (309), 242 states have internal predecessors, (309), 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 18:13:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 309 transitions. [2024-11-18 18:13:18,095 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 309 transitions. Word has length 57 [2024-11-18 18:13:18,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:18,096 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 309 transitions. [2024-11-18 18:13:18,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.46875) internal successors, (143), 32 states have internal predecessors, (143), 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 18:13:18,096 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 309 transitions. [2024-11-18 18:13:18,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 18:13:18,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:18,097 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:13:18,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 18:13:18,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 18:13:18,298 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:18,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:18,298 INFO L85 PathProgramCache]: Analyzing trace with hash 182368902, now seen corresponding path program 1 times [2024-11-18 18:13:18,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:18,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044370594] [2024-11-18 18:13:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:18,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:18,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:18,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044370594] [2024-11-18 18:13:18,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044370594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:18,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:18,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:13:18,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105292177] [2024-11-18 18:13:18,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:18,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:13:18,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:13:18,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:13:18,568 INFO L87 Difference]: Start difference. First operand 243 states and 309 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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 18:13:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:18,656 INFO L93 Difference]: Finished difference Result 427 states and 553 transitions. [2024-11-18 18:13:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:13:18,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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 75 [2024-11-18 18:13:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:18,657 INFO L225 Difference]: With dead ends: 427 [2024-11-18 18:13:18,657 INFO L226 Difference]: Without dead ends: 315 [2024-11-18 18:13:18,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:13:18,658 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 85 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:18,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 393 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:13:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-18 18:13:18,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 274. [2024-11-18 18:13:18,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.26007326007326) internal successors, (344), 273 states have internal predecessors, (344), 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 18:13:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 344 transitions. [2024-11-18 18:13:18,662 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 344 transitions. Word has length 75 [2024-11-18 18:13:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:18,662 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 344 transitions. [2024-11-18 18:13:18,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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 18:13:18,662 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 344 transitions. [2024-11-18 18:13:18,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 18:13:18,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:18,663 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:13:18,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 18:13:18,663 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:18,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:18,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1260287954, now seen corresponding path program 1 times [2024-11-18 18:13:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:18,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089299225] [2024-11-18 18:13:18,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:18,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:18,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:18,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089299225] [2024-11-18 18:13:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089299225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:13:18,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:13:18,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:13:18,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173781139] [2024-11-18 18:13:18,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:13:18,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:13:18,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:18,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:13:18,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:13:18,884 INFO L87 Difference]: Start difference. First operand 274 states and 344 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 18:13:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:18,962 INFO L93 Difference]: Finished difference Result 523 states and 663 transitions. [2024-11-18 18:13:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:13:18,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 76 [2024-11-18 18:13:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:18,966 INFO L225 Difference]: With dead ends: 523 [2024-11-18 18:13:18,966 INFO L226 Difference]: Without dead ends: 388 [2024-11-18 18:13:18,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:13:18,967 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 81 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:18,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 330 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:13:18,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-18 18:13:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 307. [2024-11-18 18:13:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.261437908496732) internal successors, (386), 306 states have internal predecessors, (386), 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 18:13:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 386 transitions. [2024-11-18 18:13:18,971 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 386 transitions. Word has length 76 [2024-11-18 18:13:18,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:18,972 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 386 transitions. [2024-11-18 18:13:18,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 18:13:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 386 transitions. [2024-11-18 18:13:18,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-18 18:13:18,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:18,972 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 18:13:18,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 18:13:18,973 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:18,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2111992537, now seen corresponding path program 1 times [2024-11-18 18:13:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:18,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944986079] [2024-11-18 18:13:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:18,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:19,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944986079] [2024-11-18 18:13:19,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944986079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:13:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199014616] [2024-11-18 18:13:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:19,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:19,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:19,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:13:19,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 18:13:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:19,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-18 18:13:19,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:13:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:20,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:13:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:21,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199014616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:13:21,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:13:21,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 17] total 36 [2024-11-18 18:13:21,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672067021] [2024-11-18 18:13:21,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:13:21,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-18 18:13:21,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:21,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-18 18:13:21,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 18:13:21,157 INFO L87 Difference]: Start difference. First operand 307 states and 386 transitions. Second operand has 36 states, 36 states have (on average 5.666666666666667) internal successors, (204), 36 states have internal predecessors, (204), 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 18:13:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:23,173 INFO L93 Difference]: Finished difference Result 944 states and 1195 transitions. [2024-11-18 18:13:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-18 18:13:23,174 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.666666666666667) internal successors, (204), 36 states have internal predecessors, (204), 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 78 [2024-11-18 18:13:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:23,178 INFO L225 Difference]: With dead ends: 944 [2024-11-18 18:13:23,178 INFO L226 Difference]: Without dead ends: 760 [2024-11-18 18:13:23,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1188, Invalid=5952, Unknown=0, NotChecked=0, Total=7140 [2024-11-18 18:13:23,181 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 530 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:23,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1363 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 18:13:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-18 18:13:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 492. [2024-11-18 18:13:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.2993890020366599) internal successors, (638), 491 states have internal predecessors, (638), 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 18:13:23,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 638 transitions. [2024-11-18 18:13:23,197 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 638 transitions. Word has length 78 [2024-11-18 18:13:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:23,197 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 638 transitions. [2024-11-18 18:13:23,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.666666666666667) internal successors, (204), 36 states have internal predecessors, (204), 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 18:13:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 638 transitions. [2024-11-18 18:13:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 18:13:23,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:23,198 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:13:23,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 18:13:23,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:23,403 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:23,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:23,404 INFO L85 PathProgramCache]: Analyzing trace with hash 943758542, now seen corresponding path program 1 times [2024-11-18 18:13:23,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:23,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037827385] [2024-11-18 18:13:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037827385] [2024-11-18 18:13:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037827385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:13:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824272333] [2024-11-18 18:13:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:23,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:23,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:23,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:13:23,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 18:13:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:24,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 18:13:24,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:13:24,359 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 39 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:24,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:13:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:24,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824272333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:13:24,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:13:24,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 22 [2024-11-18 18:13:24,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509999415] [2024-11-18 18:13:24,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:13:24,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 18:13:24,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:24,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 18:13:24,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-18 18:13:24,680 INFO L87 Difference]: Start difference. First operand 492 states and 638 transitions. Second operand has 22 states, 22 states have (on average 8.772727272727273) internal successors, (193), 22 states have internal predecessors, (193), 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 18:13:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:25,788 INFO L93 Difference]: Finished difference Result 1682 states and 2083 transitions. [2024-11-18 18:13:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-18 18:13:25,788 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.772727272727273) internal successors, (193), 22 states have internal predecessors, (193), 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 79 [2024-11-18 18:13:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:25,792 INFO L225 Difference]: With dead ends: 1682 [2024-11-18 18:13:25,792 INFO L226 Difference]: Without dead ends: 1322 [2024-11-18 18:13:25,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 18:13:25,793 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 297 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:25,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1272 Invalid, 1972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 18:13:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-18 18:13:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 707. [2024-11-18 18:13:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 706 states have (on average 1.2762039660056657) internal successors, (901), 706 states have internal predecessors, (901), 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 18:13:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 901 transitions. [2024-11-18 18:13:25,825 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 901 transitions. Word has length 79 [2024-11-18 18:13:25,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:25,825 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 901 transitions. [2024-11-18 18:13:25,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.772727272727273) internal successors, (193), 22 states have internal predecessors, (193), 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 18:13:25,826 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 901 transitions. [2024-11-18 18:13:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 18:13:25,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:25,827 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:13:25,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 18:13:26,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:26,028 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:26,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1057242744, now seen corresponding path program 1 times [2024-11-18 18:13:26,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:26,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097808173] [2024-11-18 18:13:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:26,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 27 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:26,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:26,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097808173] [2024-11-18 18:13:26,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097808173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:13:26,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589365374] [2024-11-18 18:13:26,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:26,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:26,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:26,608 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:13:26,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 18:13:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:26,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-18 18:13:26,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:13:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:27,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:13:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:29,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589365374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:13:29,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:13:29,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 16] total 42 [2024-11-18 18:13:29,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606306254] [2024-11-18 18:13:29,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:13:29,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-18 18:13:29,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:29,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-18 18:13:29,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1502, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 18:13:29,055 INFO L87 Difference]: Start difference. First operand 707 states and 901 transitions. Second operand has 42 states, 42 states have (on average 5.333333333333333) internal successors, (224), 42 states have internal predecessors, (224), 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 18:13:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:33,373 INFO L93 Difference]: Finished difference Result 2331 states and 2903 transitions. [2024-11-18 18:13:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-18 18:13:33,374 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.333333333333333) internal successors, (224), 42 states have internal predecessors, (224), 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 80 [2024-11-18 18:13:33,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:33,378 INFO L225 Difference]: With dead ends: 2331 [2024-11-18 18:13:33,378 INFO L226 Difference]: Without dead ends: 1749 [2024-11-18 18:13:33,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4746 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2107, Invalid=13643, Unknown=0, NotChecked=0, Total=15750 [2024-11-18 18:13:33,382 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 603 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:33,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 836 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 18:13:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2024-11-18 18:13:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1009. [2024-11-18 18:13:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 1008 states have (on average 1.2926587301587302) internal successors, (1303), 1008 states have internal predecessors, (1303), 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 18:13:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1303 transitions. [2024-11-18 18:13:33,401 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1303 transitions. Word has length 80 [2024-11-18 18:13:33,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:33,401 INFO L471 AbstractCegarLoop]: Abstraction has 1009 states and 1303 transitions. [2024-11-18 18:13:33,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.333333333333333) internal successors, (224), 42 states have internal predecessors, (224), 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 18:13:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1303 transitions. [2024-11-18 18:13:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-18 18:13:33,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:33,402 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:13:33,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 18:13:33,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:33,607 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:33,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:33,607 INFO L85 PathProgramCache]: Analyzing trace with hash 766750343, now seen corresponding path program 1 times [2024-11-18 18:13:33,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:33,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828191613] [2024-11-18 18:13:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:33,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 18:13:34,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:34,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828191613] [2024-11-18 18:13:34,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828191613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:13:34,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391458112] [2024-11-18 18:13:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:34,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:34,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:34,189 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:13:34,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 18:13:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:13:34,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-18 18:13:34,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:13:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:34,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:13:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:35,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391458112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:13:35,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:13:35,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 17] total 40 [2024-11-18 18:13:35,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82526972] [2024-11-18 18:13:35,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:13:35,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-18 18:13:35,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:35,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-18 18:13:35,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1360, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 18:13:35,968 INFO L87 Difference]: Start difference. First operand 1009 states and 1303 transitions. Second operand has 40 states, 40 states have (on average 5.0) internal successors, (200), 40 states have internal predecessors, (200), 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 18:13:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:38,452 INFO L93 Difference]: Finished difference Result 2773 states and 3488 transitions. [2024-11-18 18:13:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-18 18:13:38,453 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.0) internal successors, (200), 40 states have internal predecessors, (200), 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 82 [2024-11-18 18:13:38,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:38,457 INFO L225 Difference]: With dead ends: 2773 [2024-11-18 18:13:38,457 INFO L226 Difference]: Without dead ends: 1826 [2024-11-18 18:13:38,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1082, Invalid=6400, Unknown=0, NotChecked=0, Total=7482 [2024-11-18 18:13:38,460 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1091 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:38,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 628 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 18:13:38,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2024-11-18 18:13:38,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1249. [2024-11-18 18:13:38,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.2716346153846154) internal successors, (1587), 1248 states have internal predecessors, (1587), 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 18:13:38,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1587 transitions. [2024-11-18 18:13:38,478 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1587 transitions. Word has length 82 [2024-11-18 18:13:38,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:38,478 INFO L471 AbstractCegarLoop]: Abstraction has 1249 states and 1587 transitions. [2024-11-18 18:13:38,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.0) internal successors, (200), 40 states have internal predecessors, (200), 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 18:13:38,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1587 transitions. [2024-11-18 18:13:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-18 18:13:38,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:38,480 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 18:13:38,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 18:13:38,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-18 18:13:38,684 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:38,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:38,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2098723855, now seen corresponding path program 2 times [2024-11-18 18:13:38,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:38,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109138992] [2024-11-18 18:13:38,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 18:13:38,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:38,733 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 18:13:38,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:13:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:39,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:39,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109138992] [2024-11-18 18:13:39,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109138992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:13:39,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503762956] [2024-11-18 18:13:39,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 18:13:39,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:39,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:39,366 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:13:39,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 18:13:39,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 18:13:39,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:13:39,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-18 18:13:39,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:13:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 37 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:40,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:13:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 37 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:42,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503762956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:13:42,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:13:42,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20, 24] total 50 [2024-11-18 18:13:42,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539996238] [2024-11-18 18:13:42,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:13:42,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-18 18:13:42,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:42,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-18 18:13:42,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2153, Unknown=0, NotChecked=0, Total=2450 [2024-11-18 18:13:42,820 INFO L87 Difference]: Start difference. First operand 1249 states and 1587 transitions. Second operand has 50 states, 50 states have (on average 4.44) internal successors, (222), 50 states have internal predecessors, (222), 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 18:13:48,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:48,247 INFO L93 Difference]: Finished difference Result 4780 states and 5795 transitions. [2024-11-18 18:13:48,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-18 18:13:48,248 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.44) internal successors, (222), 50 states have internal predecessors, (222), 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 83 [2024-11-18 18:13:48,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:48,256 INFO L225 Difference]: With dead ends: 4780 [2024-11-18 18:13:48,256 INFO L226 Difference]: Without dead ends: 3583 [2024-11-18 18:13:48,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5074 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2054, Invalid=14458, Unknown=0, NotChecked=0, Total=16512 [2024-11-18 18:13:48,261 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 1072 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:48,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1091 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 18:13:48,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2024-11-18 18:13:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 1647. [2024-11-18 18:13:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1646 states have (on average 1.2563791008505467) internal successors, (2068), 1646 states have internal predecessors, (2068), 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 18:13:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2068 transitions. [2024-11-18 18:13:48,291 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2068 transitions. Word has length 83 [2024-11-18 18:13:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:48,291 INFO L471 AbstractCegarLoop]: Abstraction has 1647 states and 2068 transitions. [2024-11-18 18:13:48,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.44) internal successors, (222), 50 states have internal predecessors, (222), 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 18:13:48,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2068 transitions. [2024-11-18 18:13:48,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-18 18:13:48,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:48,293 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:13:48,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 18:13:48,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 18:13:48,494 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:48,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:48,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1975369409, now seen corresponding path program 2 times [2024-11-18 18:13:48,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:48,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526142003] [2024-11-18 18:13:48,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 18:13:48,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:48,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 18:13:48,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:13:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:49,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:13:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526142003] [2024-11-18 18:13:49,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526142003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:13:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203530247] [2024-11-18 18:13:49,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 18:13:49,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:13:49,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:13:49,050 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:13:49,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 18:13:49,204 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 18:13:49,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:13:49,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-18 18:13:49,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:13:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:13:50,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:13:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 57 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 18:13:55,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203530247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:13:55,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:13:55,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 24] total 56 [2024-11-18 18:13:55,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061032647] [2024-11-18 18:13:55,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:13:55,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-18 18:13:55,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:13:55,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-18 18:13:55,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=2736, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 18:13:55,116 INFO L87 Difference]: Start difference. First operand 1647 states and 2068 transitions. Second operand has 56 states, 56 states have (on average 4.339285714285714) internal successors, (243), 56 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:13:59,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:13:59,039 INFO L93 Difference]: Finished difference Result 5153 states and 6293 transitions. [2024-11-18 18:13:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-18 18:13:59,041 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.339285714285714) internal successors, (243), 56 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-18 18:13:59,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:13:59,054 INFO L225 Difference]: With dead ends: 5153 [2024-11-18 18:13:59,054 INFO L226 Difference]: Without dead ends: 3833 [2024-11-18 18:13:59,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5425 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1970, Invalid=14542, Unknown=0, NotChecked=0, Total=16512 [2024-11-18 18:13:59,065 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 873 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:13:59,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1107 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2604 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 18:13:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2024-11-18 18:13:59,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 1936. [2024-11-18 18:13:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1935 states have (on average 1.2439276485788113) internal successors, (2407), 1935 states have internal predecessors, (2407), 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 18:13:59,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 2407 transitions. [2024-11-18 18:13:59,125 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 2407 transitions. Word has length 85 [2024-11-18 18:13:59,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:13:59,125 INFO L471 AbstractCegarLoop]: Abstraction has 1936 states and 2407 transitions. [2024-11-18 18:13:59,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.339285714285714) internal successors, (243), 56 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:13:59,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 2407 transitions. [2024-11-18 18:13:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-18 18:13:59,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:13:59,130 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:13:59,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 18:13:59,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 18:13:59,335 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:13:59,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:13:59,335 INFO L85 PathProgramCache]: Analyzing trace with hash -335776690, now seen corresponding path program 1 times [2024-11-18 18:13:59,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:13:59,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245403104] [2024-11-18 18:13:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:13:59,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:13:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 18:14:00,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:00,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245403104] [2024-11-18 18:14:00,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245403104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:14:00,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093209958] [2024-11-18 18:14:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:00,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:00,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:14:00,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:14:00,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 18:14:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:00,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-18 18:14:00,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:14:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:00,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:14:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:02,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093209958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:14:02,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:14:02,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 16] total 43 [2024-11-18 18:14:02,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73407230] [2024-11-18 18:14:02,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:14:02,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 18:14:02,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:02,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 18:14:02,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1570, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 18:14:02,370 INFO L87 Difference]: Start difference. First operand 1936 states and 2407 transitions. Second operand has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 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 18:14:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:03,321 INFO L93 Difference]: Finished difference Result 4446 states and 5503 transitions. [2024-11-18 18:14:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-18 18:14:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 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 86 [2024-11-18 18:14:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:03,327 INFO L225 Difference]: With dead ends: 4446 [2024-11-18 18:14:03,328 INFO L226 Difference]: Without dead ends: 2992 [2024-11-18 18:14:03,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 144 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=514, Invalid=3026, Unknown=0, NotChecked=0, Total=3540 [2024-11-18 18:14:03,330 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 386 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:03,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 704 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 18:14:03,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2024-11-18 18:14:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2115. [2024-11-18 18:14:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 2114 states have (on average 1.2355723746452223) internal successors, (2612), 2114 states have internal predecessors, (2612), 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 18:14:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2612 transitions. [2024-11-18 18:14:03,363 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2612 transitions. Word has length 86 [2024-11-18 18:14:03,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:03,363 INFO L471 AbstractCegarLoop]: Abstraction has 2115 states and 2612 transitions. [2024-11-18 18:14:03,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 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 18:14:03,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2612 transitions. [2024-11-18 18:14:03,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-18 18:14:03,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:03,365 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:14:03,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 18:14:03,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 18:14:03,570 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:03,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:03,570 INFO L85 PathProgramCache]: Analyzing trace with hash 551330583, now seen corresponding path program 3 times [2024-11-18 18:14:03,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:03,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797206838] [2024-11-18 18:14:03,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 18:14:03,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:03,618 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 18:14:03,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:14:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:04,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797206838] [2024-11-18 18:14:04,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797206838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:14:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382116977] [2024-11-18 18:14:04,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 18:14:04,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:04,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:14:04,454 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:14:04,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 18:14:04,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 18:14:04,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:14:04,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-18 18:14:04,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:14:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:06,152 INFO L311 TraceCheckSpWp]: Computing backward predicates...