./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/recHanoi01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/recHanoi01.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:23:03,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:23:03,364 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:23:03,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:23:03,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:23:03,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:23:03,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:23:03,405 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:23:03,406 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:23:03,407 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:23:03,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:23:03,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:23:03,409 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:23:03,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:23:03,410 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:23:03,410 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:23:03,410 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:23:03,410 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:23:03,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:23:03,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:23:03,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:23:03,412 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:23:03,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:23:03,413 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:23:03,413 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:23:03,413 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:23:03,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:23:03,413 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:23:03,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:23:03,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:23:03,415 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:23:03,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:23:03,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:23:03,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:23:03,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:23:03,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:23:03,416 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:23:03,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:23:03,416 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:23:03,416 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:23:03,417 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:23:03,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:23:03,417 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 [2024-11-18 14:23:03,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:23:03,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:23:03,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:23:03,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:23:03,637 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:23:03,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi01.c [2024-11-18 14:23:04,821 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:23:04,961 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:23:04,961 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi01.c [2024-11-18 14:23:04,968 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5505fa60/1edd7b4fec954c7aa086be06c8387be0/FLAGe50837a75 [2024-11-18 14:23:04,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5505fa60/1edd7b4fec954c7aa086be06c8387be0 [2024-11-18 14:23:04,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:23:04,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:23:04,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:23:04,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:23:04,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:23:04,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:23:04" (1/1) ... [2024-11-18 14:23:04,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f045be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:04, skipping insertion in model container [2024-11-18 14:23:04,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:23:04" (1/1) ... [2024-11-18 14:23:05,007 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:23:05,136 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/recursive/recHanoi01.c[1213,1226] [2024-11-18 14:23:05,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:23:05,146 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:23:05,158 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/recursive/recHanoi01.c[1213,1226] [2024-11-18 14:23:05,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:23:05,171 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:23:05,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05 WrapperNode [2024-11-18 14:23:05,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:23:05,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:23:05,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:23:05,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:23:05,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,194 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-11-18 14:23:05,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:23:05,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:23:05,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:23:05,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:23:05,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,211 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 14:23:05,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:23:05,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:23:05,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:23:05,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:23:05,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (1/1) ... [2024-11-18 14:23:05,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:23:05,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:05,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:23:05,254 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 14:23:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:23:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2024-11-18 14:23:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2024-11-18 14:23:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2024-11-18 14:23:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2024-11-18 14:23:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:23:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:23:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:23:05,341 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:23:05,343 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:23:05,459 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-18 14:23:05,460 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:23:05,473 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:23:05,477 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 14:23:05,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:23:05 BoogieIcfgContainer [2024-11-18 14:23:05,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:23:05,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:23:05,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:23:05,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:23:05,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:23:04" (1/3) ... [2024-11-18 14:23:05,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1700c186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:23:05, skipping insertion in model container [2024-11-18 14:23:05,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:05" (2/3) ... [2024-11-18 14:23:05,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1700c186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:23:05, skipping insertion in model container [2024-11-18 14:23:05,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:23:05" (3/3) ... [2024-11-18 14:23:05,487 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2024-11-18 14:23:05,500 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:23:05,501 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:23:05,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:23:05,566 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;@41af71a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:23:05,567 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:23:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 14:23:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 14:23:05,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:05,577 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:05,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:05,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash -424312916, now seen corresponding path program 1 times [2024-11-18 14:23:05,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:05,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858870116] [2024-11-18 14:23:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:05,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:05,849 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 14:23:05,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858870116] [2024-11-18 14:23:05,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858870116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:23:05,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:23:05,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:23:05,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380024376] [2024-11-18 14:23:05,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:23:05,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:23:05,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:05,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:23:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:23:05,884 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 14:23:05,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:05,962 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2024-11-18 14:23:05,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:23:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-18 14:23:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:05,973 INFO L225 Difference]: With dead ends: 41 [2024-11-18 14:23:05,973 INFO L226 Difference]: Without dead ends: 23 [2024-11-18 14:23:05,976 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 14:23:05,979 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:05,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 82 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-18 14:23:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-18 14:23:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-18 14:23:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-11-18 14:23:06,017 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 16 [2024-11-18 14:23:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:06,017 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-18 14:23:06,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 14:23:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-18 14:23:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 14:23:06,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:06,019 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:06,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:23:06,020 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:06,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:06,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2103389423, now seen corresponding path program 1 times [2024-11-18 14:23:06,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:06,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916403432] [2024-11-18 14:23:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:06,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:23:06,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:06,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916403432] [2024-11-18 14:23:06,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916403432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:06,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577016981] [2024-11-18 14:23:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:06,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:06,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:06,366 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 14:23:06,368 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 14:23:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:06,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 14:23:06,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:23:06,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:23:06,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577016981] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:06,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:06,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 17 [2024-11-18 14:23:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294355850] [2024-11-18 14:23:06,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:06,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:23:06,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:06,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:23:06,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:23:06,739 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-18 14:23:07,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:07,076 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2024-11-18 14:23:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 14:23:07,078 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 26 [2024-11-18 14:23:07,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:07,080 INFO L225 Difference]: With dead ends: 74 [2024-11-18 14:23:07,080 INFO L226 Difference]: Without dead ends: 68 [2024-11-18 14:23:07,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:23:07,083 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 60 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:07,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 107 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:23:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-18 14:23:07,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2024-11-18 14:23:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 34 states have internal predecessors, (36), 14 states have call successors, (14), 6 states have call predecessors, (14), 11 states have return successors, (33), 16 states have call predecessors, (33), 14 states have call successors, (33) [2024-11-18 14:23:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2024-11-18 14:23:07,102 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 26 [2024-11-18 14:23:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:07,102 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2024-11-18 14:23:07,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-18 14:23:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2024-11-18 14:23:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 14:23:07,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:07,106 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:07,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:07,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:07,308 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:07,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash 365687158, now seen corresponding path program 2 times [2024-11-18 14:23:07,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:07,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997143242] [2024-11-18 14:23:07,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:07,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:07,351 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:07,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:23:07,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:07,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997143242] [2024-11-18 14:23:07,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997143242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:07,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056417952] [2024-11-18 14:23:07,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:07,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:07,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:07,553 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 14:23:07,555 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 14:23:07,600 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:07,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:07,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:23:07,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:23:07,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:23:08,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056417952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:08,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:08,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 13 [2024-11-18 14:23:08,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308520055] [2024-11-18 14:23:08,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:08,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 14:23:08,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:08,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 14:23:08,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:23:08,008 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-18 14:23:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:08,100 INFO L93 Difference]: Finished difference Result 69 states and 95 transitions. [2024-11-18 14:23:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:23:08,101 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 36 [2024-11-18 14:23:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:08,102 INFO L225 Difference]: With dead ends: 69 [2024-11-18 14:23:08,102 INFO L226 Difference]: Without dead ends: 65 [2024-11-18 14:23:08,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:23:08,103 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:08,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 118 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-18 14:23:08,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2024-11-18 14:23:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 29 states have internal predecessors, (30), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) [2024-11-18 14:23:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 72 transitions. [2024-11-18 14:23:08,113 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 72 transitions. Word has length 36 [2024-11-18 14:23:08,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:08,113 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 72 transitions. [2024-11-18 14:23:08,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-18 14:23:08,114 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 72 transitions. [2024-11-18 14:23:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 14:23:08,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:08,115 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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 14:23:08,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:23:08,319 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,SelfDestructingSolverStorable2 [2024-11-18 14:23:08,320 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:08,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:08,320 INFO L85 PathProgramCache]: Analyzing trace with hash -787037173, now seen corresponding path program 1 times [2024-11-18 14:23:08,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:08,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583261937] [2024-11-18 14:23:08,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:08,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:23:08,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:08,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583261937] [2024-11-18 14:23:08,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583261937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:08,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948113701] [2024-11-18 14:23:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:08,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:08,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:08,461 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 14:23:08,468 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 14:23:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:08,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:23:08,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:23:08,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:23:08,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948113701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:08,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:08,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 13 [2024-11-18 14:23:08,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982004647] [2024-11-18 14:23:08,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:08,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 14:23:08,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:08,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 14:23:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:23:08,876 INFO L87 Difference]: Start difference. First operand 48 states and 72 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 14:23:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:09,019 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions. [2024-11-18 14:23:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:23:09,020 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) Word has length 32 [2024-11-18 14:23:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:09,021 INFO L225 Difference]: With dead ends: 57 [2024-11-18 14:23:09,025 INFO L226 Difference]: Without dead ends: 47 [2024-11-18 14:23:09,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:23:09,026 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:09,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 110 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-18 14:23:09,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2024-11-18 14:23:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (25), 11 states have call predecessors, (25), 11 states have call successors, (25) [2024-11-18 14:23:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2024-11-18 14:23:09,040 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 63 transitions. Word has length 32 [2024-11-18 14:23:09,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:09,040 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 63 transitions. [2024-11-18 14:23:09,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 14:23:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 63 transitions. [2024-11-18 14:23:09,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 14:23:09,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:09,045 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:09,058 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 14:23:09,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:09,246 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:09,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:09,246 INFO L85 PathProgramCache]: Analyzing trace with hash 464974891, now seen corresponding path program 2 times [2024-11-18 14:23:09,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:09,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406074329] [2024-11-18 14:23:09,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:09,258 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:09,258 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 13 proven. 37 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-18 14:23:09,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406074329] [2024-11-18 14:23:09,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406074329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064946188] [2024-11-18 14:23:09,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:09,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:09,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:09,704 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 14:23:09,707 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 14:23:09,762 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:09,763 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:09,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 14:23:09,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-18 14:23:09,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 14:23:10,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064946188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:10,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:10,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 18] total 32 [2024-11-18 14:23:10,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938580854] [2024-11-18 14:23:10,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:10,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 14:23:10,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:10,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 14:23:10,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2024-11-18 14:23:10,338 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand has 32 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 25 states have internal predecessors, (47), 10 states have call successors, (20), 8 states have call predecessors, (20), 14 states have return successors, (21), 13 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-18 14:23:11,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:11,186 INFO L93 Difference]: Finished difference Result 115 states and 232 transitions. [2024-11-18 14:23:11,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-18 14:23:11,186 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 25 states have internal predecessors, (47), 10 states have call successors, (20), 8 states have call predecessors, (20), 14 states have return successors, (21), 13 states have call predecessors, (21), 10 states have call successors, (21) Word has length 52 [2024-11-18 14:23:11,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:11,188 INFO L225 Difference]: With dead ends: 115 [2024-11-18 14:23:11,188 INFO L226 Difference]: Without dead ends: 109 [2024-11-18 14:23:11,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=2552, Unknown=0, NotChecked=0, Total=2970 [2024-11-18 14:23:11,191 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 138 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:11,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 199 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:23:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-18 14:23:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 77. [2024-11-18 14:23:11,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 40 states have (on average 1.1) internal successors, (44), 43 states have internal predecessors, (44), 19 states have call successors, (19), 7 states have call predecessors, (19), 17 states have return successors, (71), 26 states have call predecessors, (71), 19 states have call successors, (71) [2024-11-18 14:23:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 134 transitions. [2024-11-18 14:23:11,215 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 134 transitions. Word has length 52 [2024-11-18 14:23:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:11,215 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 134 transitions. [2024-11-18 14:23:11,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 25 states have internal predecessors, (47), 10 states have call successors, (20), 8 states have call predecessors, (20), 14 states have return successors, (21), 13 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-18 14:23:11,216 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 134 transitions. [2024-11-18 14:23:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 14:23:11,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:11,217 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:11,235 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 14:23:11,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:11,422 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:11,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:11,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1248129008, now seen corresponding path program 3 times [2024-11-18 14:23:11,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:11,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694806031] [2024-11-18 14:23:11,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:11,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:11,433 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 14:23:11,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 73 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-18 14:23:11,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:11,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694806031] [2024-11-18 14:23:11,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694806031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:11,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483657226] [2024-11-18 14:23:11,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:11,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:11,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:11,499 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 14:23:11,517 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 14:23:11,569 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 14:23:11,569 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:11,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:23:11,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 75 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-18 14:23:11,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 75 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-18 14:23:11,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483657226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:11,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:11,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 13 [2024-11-18 14:23:11,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056215304] [2024-11-18 14:23:11,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:11,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 14:23:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:11,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 14:23:11,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:23:11,855 INFO L87 Difference]: Start difference. First operand 77 states and 134 transitions. Second operand has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 5 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-18 14:23:11,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:11,946 INFO L93 Difference]: Finished difference Result 134 states and 292 transitions. [2024-11-18 14:23:11,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:23:11,946 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 5 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 62 [2024-11-18 14:23:11,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:11,948 INFO L225 Difference]: With dead ends: 134 [2024-11-18 14:23:11,948 INFO L226 Difference]: Without dead ends: 91 [2024-11-18 14:23:11,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:23:11,949 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:11,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 121 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-18 14:23:11,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2024-11-18 14:23:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 45 states have internal predecessors, (48), 19 states have call successors, (19), 9 states have call predecessors, (19), 17 states have return successors, (60), 26 states have call predecessors, (60), 19 states have call successors, (60) [2024-11-18 14:23:11,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 127 transitions. [2024-11-18 14:23:11,963 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 127 transitions. Word has length 62 [2024-11-18 14:23:11,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:11,963 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 127 transitions. [2024-11-18 14:23:11,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 5 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-18 14:23:11,963 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 127 transitions. [2024-11-18 14:23:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 14:23:11,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:11,965 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:11,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:12,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:12,169 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:12,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:12,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1359329167, now seen corresponding path program 4 times [2024-11-18 14:23:12,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:12,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42564112] [2024-11-18 14:23:12,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:23:12,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:12,180 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:23:12,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 43 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-18 14:23:12,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:12,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42564112] [2024-11-18 14:23:12,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42564112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:12,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194771258] [2024-11-18 14:23:12,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:23:12,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:12,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:12,287 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 14:23:12,288 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 14:23:12,338 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:23:12,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:12,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:23:12,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 37 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-18 14:23:12,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:23:12,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194771258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:12,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:12,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 19 [2024-11-18 14:23:12,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054198059] [2024-11-18 14:23:12,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:12,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:23:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:23:12,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:23:12,767 INFO L87 Difference]: Start difference. First operand 81 states and 127 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (16), 7 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-18 14:23:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:12,946 INFO L93 Difference]: Finished difference Result 133 states and 253 transitions. [2024-11-18 14:23:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:23:12,947 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (16), 7 states have call predecessors, (16), 12 states have call successors, (16) Word has length 58 [2024-11-18 14:23:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:12,949 INFO L225 Difference]: With dead ends: 133 [2024-11-18 14:23:12,949 INFO L226 Difference]: Without dead ends: 115 [2024-11-18 14:23:12,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 105 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:23:12,950 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:12,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 170 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-18 14:23:12,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2024-11-18 14:23:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 50 states have (on average 1.1) internal successors, (55), 51 states have internal predecessors, (55), 32 states have call successors, (32), 10 states have call predecessors, (32), 22 states have return successors, (121), 43 states have call predecessors, (121), 32 states have call successors, (121) [2024-11-18 14:23:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 208 transitions. [2024-11-18 14:23:12,971 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 208 transitions. Word has length 58 [2024-11-18 14:23:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:12,971 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 208 transitions. [2024-11-18 14:23:12,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (16), 7 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-18 14:23:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 208 transitions. [2024-11-18 14:23:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 14:23:12,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:12,973 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:12,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:23:13,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:13,178 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:13,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:13,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1111254832, now seen corresponding path program 5 times [2024-11-18 14:23:13,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:13,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675074662] [2024-11-18 14:23:13,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:23:13,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:13,185 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 14:23:13,185 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 42 proven. 45 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-18 14:23:13,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:13,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675074662] [2024-11-18 14:23:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675074662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:13,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457312265] [2024-11-18 14:23:13,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:23:13,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:13,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:13,228 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 14:23:13,229 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 14:23:13,275 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 14:23:13,275 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:13,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:23:13,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 101 proven. 8 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 14:23:13,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 42 proven. 46 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-18 14:23:13,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457312265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:13,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:13,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 11 [2024-11-18 14:23:13,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236675973] [2024-11-18 14:23:13,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:13,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:23:13,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:13,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:23:13,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:23:13,518 INFO L87 Difference]: Start difference. First operand 105 states and 208 transitions. Second operand has 11 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-18 14:23:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:13,594 INFO L93 Difference]: Finished difference Result 181 states and 393 transitions. [2024-11-18 14:23:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:23:13,595 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 62 [2024-11-18 14:23:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:13,596 INFO L225 Difference]: With dead ends: 181 [2024-11-18 14:23:13,596 INFO L226 Difference]: Without dead ends: 103 [2024-11-18 14:23:13,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:23:13,598 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:13,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 91 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:23:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-18 14:23:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2024-11-18 14:23:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 50 states have internal predecessors, (55), 26 states have call successors, (26), 12 states have call predecessors, (26), 19 states have return successors, (62), 34 states have call predecessors, (62), 26 states have call successors, (62) [2024-11-18 14:23:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 143 transitions. [2024-11-18 14:23:13,611 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 143 transitions. Word has length 62 [2024-11-18 14:23:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:13,611 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 143 transitions. [2024-11-18 14:23:13,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-18 14:23:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 143 transitions. [2024-11-18 14:23:13,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 14:23:13,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:13,612 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 6, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:13,625 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 14:23:13,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:13,815 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:13,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:13,815 INFO L85 PathProgramCache]: Analyzing trace with hash -244206325, now seen corresponding path program 6 times [2024-11-18 14:23:13,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:13,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923470847] [2024-11-18 14:23:13,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:13,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:13,828 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-18 14:23:13,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 41 proven. 73 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-18 14:23:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923470847] [2024-11-18 14:23:13,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923470847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623355941] [2024-11-18 14:23:13,969 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:13,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:13,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:13,973 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 14:23:13,979 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 14:23:14,051 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-18 14:23:14,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:14,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:23:14,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-18 14:23:14,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 40 proven. 83 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-18 14:23:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623355941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:14,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:14,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 19 [2024-11-18 14:23:14,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744193850] [2024-11-18 14:23:14,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:14,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:23:14,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:14,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:23:14,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:23:14,538 INFO L87 Difference]: Start difference. First operand 97 states and 143 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 11 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-18 14:23:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:14,666 INFO L93 Difference]: Finished difference Result 110 states and 164 transitions. [2024-11-18 14:23:14,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:23:14,667 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 11 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) Word has length 72 [2024-11-18 14:23:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:14,668 INFO L225 Difference]: With dead ends: 110 [2024-11-18 14:23:14,668 INFO L226 Difference]: Without dead ends: 87 [2024-11-18 14:23:14,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:23:14,669 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:14,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 126 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-18 14:23:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2024-11-18 14:23:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 20 states have call successors, (20), 10 states have call predecessors, (20), 13 states have return successors, (40), 24 states have call predecessors, (40), 20 states have call successors, (40) [2024-11-18 14:23:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 104 transitions. [2024-11-18 14:23:14,677 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 104 transitions. Word has length 72 [2024-11-18 14:23:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:14,677 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 104 transitions. [2024-11-18 14:23:14,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 11 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-18 14:23:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 104 transitions. [2024-11-18 14:23:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 14:23:14,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:14,678 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:14,691 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 14:23:14,881 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,SelfDestructingSolverStorable8 [2024-11-18 14:23:14,881 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:14,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1624983153, now seen corresponding path program 7 times [2024-11-18 14:23:14,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:14,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667697810] [2024-11-18 14:23:14,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:14,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 34 proven. 161 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2024-11-18 14:23:15,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667697810] [2024-11-18 14:23:15,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667697810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397862007] [2024-11-18 14:23:15,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:15,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:15,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:15,359 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 14:23:15,360 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 14:23:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:15,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-18 14:23:15,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-18 14:23:15,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 14:23:16,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397862007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:16,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:16,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 32] total 51 [2024-11-18 14:23:16,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399754257] [2024-11-18 14:23:16,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:16,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-18 14:23:16,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-18 14:23:16,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2365, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 14:23:16,708 INFO L87 Difference]: Start difference. First operand 75 states and 104 transitions. Second operand has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (27), 12 states have call predecessors, (27), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) [2024-11-18 14:23:20,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:20,045 INFO L93 Difference]: Finished difference Result 338 states and 592 transitions. [2024-11-18 14:23:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-18 14:23:20,045 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (27), 12 states have call predecessors, (27), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) Word has length 98 [2024-11-18 14:23:20,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:20,048 INFO L225 Difference]: With dead ends: 338 [2024-11-18 14:23:20,048 INFO L226 Difference]: Without dead ends: 334 [2024-11-18 14:23:20,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3521 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1764, Invalid=11576, Unknown=0, NotChecked=0, Total=13340 [2024-11-18 14:23:20,051 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 465 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:20,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 347 Invalid, 2257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 14:23:20,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-18 14:23:20,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 242. [2024-11-18 14:23:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 123 states have (on average 1.089430894308943) internal successors, (134), 118 states have internal predecessors, (134), 68 states have call successors, (68), 31 states have call predecessors, (68), 50 states have return successors, (208), 92 states have call predecessors, (208), 68 states have call successors, (208) [2024-11-18 14:23:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 410 transitions. [2024-11-18 14:23:20,097 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 410 transitions. Word has length 98 [2024-11-18 14:23:20,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:20,097 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 410 transitions. [2024-11-18 14:23:20,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (27), 12 states have call predecessors, (27), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) [2024-11-18 14:23:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 410 transitions. [2024-11-18 14:23:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:23:20,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:20,100 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:20,127 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 14:23:20,300 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,SelfDestructingSolverStorable9 [2024-11-18 14:23:20,301 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:20,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1480250389, now seen corresponding path program 8 times [2024-11-18 14:23:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:20,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620023967] [2024-11-18 14:23:20,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:20,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:20,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:20,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 42 proven. 147 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2024-11-18 14:23:20,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:20,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620023967] [2024-11-18 14:23:20,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620023967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:20,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051733591] [2024-11-18 14:23:20,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:20,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:20,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:20,535 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 14:23:20,542 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 14:23:20,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:20,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:20,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 14:23:20,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 48 proven. 138 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-18 14:23:20,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 48 proven. 156 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-18 14:23:21,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051733591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:21,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:21,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 23 [2024-11-18 14:23:21,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878838676] [2024-11-18 14:23:21,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:21,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:23:21,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:21,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:23:21,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:23:21,385 INFO L87 Difference]: Start difference. First operand 242 states and 410 transitions. Second operand has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (15), 1 states have call predecessors, (15), 10 states have return successors, (20), 9 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-18 14:23:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:21,634 INFO L93 Difference]: Finished difference Result 336 states and 702 transitions. [2024-11-18 14:23:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:23:21,634 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (15), 1 states have call predecessors, (15), 10 states have return successors, (20), 9 states have call predecessors, (20), 13 states have call successors, (20) Word has length 104 [2024-11-18 14:23:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:21,637 INFO L225 Difference]: With dead ends: 336 [2024-11-18 14:23:21,637 INFO L226 Difference]: Without dead ends: 315 [2024-11-18 14:23:21,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 195 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-18 14:23:21,638 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:21,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 184 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:21,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-18 14:23:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 236. [2024-11-18 14:23:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 118 states have (on average 1.0847457627118644) internal successors, (128), 112 states have internal predecessors, (128), 68 states have call successors, (68), 30 states have call predecessors, (68), 49 states have return successors, (224), 93 states have call predecessors, (224), 68 states have call successors, (224) [2024-11-18 14:23:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 420 transitions. [2024-11-18 14:23:21,698 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 420 transitions. Word has length 104 [2024-11-18 14:23:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:21,699 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 420 transitions. [2024-11-18 14:23:21,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (15), 1 states have call predecessors, (15), 10 states have return successors, (20), 9 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-18 14:23:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 420 transitions. [2024-11-18 14:23:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-18 14:23:21,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:21,701 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 10, 9, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:21,719 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 14:23:21,902 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,SelfDestructingSolverStorable10 [2024-11-18 14:23:21,902 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:21,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:21,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1112974993, now seen corresponding path program 9 times [2024-11-18 14:23:21,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:21,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358872906] [2024-11-18 14:23:21,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:21,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:21,966 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 14:23:21,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 63 proven. 192 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-18 14:23:22,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:22,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358872906] [2024-11-18 14:23:22,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358872906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:22,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930202644] [2024-11-18 14:23:22,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:22,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:22,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:22,373 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 14:23:22,377 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 14:23:22,545 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 14:23:22,545 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:22,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-18 14:23:22,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 63 proven. 185 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2024-11-18 14:23:22,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 63 proven. 198 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2024-11-18 14:23:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930202644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:23,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:23,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 22 [2024-11-18 14:23:23,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216003095] [2024-11-18 14:23:23,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:23,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 14:23:23,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:23,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 14:23:23,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:23:23,258 INFO L87 Difference]: Start difference. First operand 236 states and 420 transitions. Second operand has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 14 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (20), 9 states have call predecessors, (20), 14 states have call successors, (20) [2024-11-18 14:23:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:23,945 INFO L93 Difference]: Finished difference Result 468 states and 983 transitions. [2024-11-18 14:23:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 14:23:23,946 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 14 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (20), 9 states have call predecessors, (20), 14 states have call successors, (20) Word has length 118 [2024-11-18 14:23:23,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:23,952 INFO L225 Difference]: With dead ends: 468 [2024-11-18 14:23:23,952 INFO L226 Difference]: Without dead ends: 254 [2024-11-18 14:23:23,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 14:23:23,958 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 27 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:23,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 204 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:23:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-18 14:23:24,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 228. [2024-11-18 14:23:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 116 states have (on average 1.0775862068965518) internal successors, (125), 113 states have internal predecessors, (125), 68 states have call successors, (68), 32 states have call predecessors, (68), 43 states have return successors, (201), 82 states have call predecessors, (201), 68 states have call successors, (201) [2024-11-18 14:23:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 394 transitions. [2024-11-18 14:23:24,088 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 394 transitions. Word has length 118 [2024-11-18 14:23:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:24,089 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 394 transitions. [2024-11-18 14:23:24,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 14 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (20), 9 states have call predecessors, (20), 14 states have call successors, (20) [2024-11-18 14:23:24,089 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 394 transitions. [2024-11-18 14:23:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-18 14:23:24,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:24,096 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 20, 19, 19, 19, 19, 19, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:24,132 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 14:23:24,297 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,SelfDestructingSolverStorable11 [2024-11-18 14:23:24,297 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:24,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:24,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1330004459, now seen corresponding path program 10 times [2024-11-18 14:23:24,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:24,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435921982] [2024-11-18 14:23:24,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:23:24,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:24,377 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:23:24,377 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 523 proven. 649 refuted. 0 times theorem prover too weak. 2164 trivial. 0 not checked. [2024-11-18 14:23:24,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435921982] [2024-11-18 14:23:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435921982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:24,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609314804] [2024-11-18 14:23:24,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:23:24,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:24,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:24,635 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 14:23:24,637 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 14:23:24,784 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:23:24,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:24,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 14:23:24,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:24,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 523 proven. 649 refuted. 0 times theorem prover too weak. 2164 trivial. 0 not checked. [2024-11-18 14:23:24,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 523 proven. 674 refuted. 0 times theorem prover too weak. 2139 trivial. 0 not checked. [2024-11-18 14:23:26,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609314804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:26,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:26,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 21] total 23 [2024-11-18 14:23:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182333478] [2024-11-18 14:23:26,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:26,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:23:26,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:26,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:23:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:23:26,350 INFO L87 Difference]: Start difference. First operand 228 states and 394 transitions. Second operand has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 18 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (31), 12 states have call predecessors, (31), 18 states have call successors, (31) [2024-11-18 14:23:26,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:26,614 INFO L93 Difference]: Finished difference Result 350 states and 633 transitions. [2024-11-18 14:23:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 14:23:26,615 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 18 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (31), 12 states have call predecessors, (31), 18 states have call successors, (31) Word has length 224 [2024-11-18 14:23:26,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:26,616 INFO L225 Difference]: With dead ends: 350 [2024-11-18 14:23:26,616 INFO L226 Difference]: Without dead ends: 208 [2024-11-18 14:23:26,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 436 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=368, Invalid=1038, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 14:23:26,618 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 68 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:26,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 262 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-18 14:23:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 177. [2024-11-18 14:23:26,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 states have internal predecessors, (95), 53 states have call successors, (53), 24 states have call predecessors, (53), 33 states have return successors, (94), 62 states have call predecessors, (94), 53 states have call successors, (94) [2024-11-18 14:23:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 242 transitions. [2024-11-18 14:23:26,639 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 242 transitions. Word has length 224 [2024-11-18 14:23:26,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:26,639 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 242 transitions. [2024-11-18 14:23:26,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 18 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (31), 12 states have call predecessors, (31), 18 states have call successors, (31) [2024-11-18 14:23:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 242 transitions. [2024-11-18 14:23:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-18 14:23:26,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:26,645 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:26,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:23:26,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 14:23:26,846 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:26,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2072776725, now seen corresponding path program 11 times [2024-11-18 14:23:26,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:26,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430821614] [2024-11-18 14:23:26,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:23:26,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:26,901 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-18 14:23:26,901 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 74 proven. 705 refuted. 0 times theorem prover too weak. 1321 trivial. 0 not checked. [2024-11-18 14:23:27,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:27,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430821614] [2024-11-18 14:23:27,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430821614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:27,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460602197] [2024-11-18 14:23:27,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:23:27,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:27,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:27,980 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:27,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:23:28,149 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-18 14:23:28,149 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:28,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 175 conjuncts are in the unsatisfiable core [2024-11-18 14:23:28,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2024-11-18 14:23:28,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-18 14:23:31,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460602197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:31,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:31,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 58] total 82 [2024-11-18 14:23:31,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061542587] [2024-11-18 14:23:31,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:31,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-18 14:23:31,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-18 14:23:31,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=6346, Unknown=0, NotChecked=0, Total=6642 [2024-11-18 14:23:31,266 INFO L87 Difference]: Start difference. First operand 177 states and 242 transitions. Second operand has 82 states, 64 states have (on average 1.65625) internal successors, (106), 61 states have internal predecessors, (106), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) [2024-11-18 14:23:49,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:49,353 INFO L93 Difference]: Finished difference Result 469 states and 637 transitions. [2024-11-18 14:23:49,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-11-18 14:23:49,353 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 64 states have (on average 1.65625) internal successors, (106), 61 states have internal predecessors, (106), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) Word has length 184 [2024-11-18 14:23:49,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:49,356 INFO L225 Difference]: With dead ends: 469 [2024-11-18 14:23:49,356 INFO L226 Difference]: Without dead ends: 465 [2024-11-18 14:23:49,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16633 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=7684, Invalid=49198, Unknown=0, NotChecked=0, Total=56882 [2024-11-18 14:23:49,364 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1606 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 3214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 6148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3214 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:49,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 877 Invalid, 6148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3214 Valid, 2934 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 14:23:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-18 14:23:49,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 431. [2024-11-18 14:23:49,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 222 states have (on average 1.063063063063063) internal successors, (236), 223 states have internal predecessors, (236), 127 states have call successors, (127), 64 states have call predecessors, (127), 81 states have return successors, (233), 143 states have call predecessors, (233), 127 states have call successors, (233) [2024-11-18 14:23:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 596 transitions. [2024-11-18 14:23:49,420 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 596 transitions. Word has length 184 [2024-11-18 14:23:49,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:49,420 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 596 transitions. [2024-11-18 14:23:49,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 64 states have (on average 1.65625) internal successors, (106), 61 states have internal predecessors, (106), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) [2024-11-18 14:23:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 596 transitions. [2024-11-18 14:23:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 14:23:49,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:49,423 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:49,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:49,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 14:23:49,628 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:49,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:49,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1729878095, now seen corresponding path program 12 times [2024-11-18 14:23:49,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:49,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067324143] [2024-11-18 14:23:49,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:49,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:49,642 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-18 14:23:49,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 183 proven. 367 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2024-11-18 14:23:49,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067324143] [2024-11-18 14:23:49,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067324143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197771954] [2024-11-18 14:23:49,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:49,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:49,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:49,833 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:49,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:23:49,959 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-18 14:23:49,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:49,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 14:23:49,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 192 proven. 338 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2024-11-18 14:23:50,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 194 proven. 368 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2024-11-18 14:23:51,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197771954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:51,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:51,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 30 [2024-11-18 14:23:51,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555025688] [2024-11-18 14:23:51,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:51,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 14:23:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 14:23:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2024-11-18 14:23:51,270 INFO L87 Difference]: Start difference. First operand 431 states and 596 transitions. Second operand has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 17 states have call successors, (21), 1 states have call predecessors, (21), 13 states have return successors, (29), 14 states have call predecessors, (29), 17 states have call successors, (29) [2024-11-18 14:23:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:51,604 INFO L93 Difference]: Finished difference Result 473 states and 658 transitions. [2024-11-18 14:23:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:23:51,605 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 17 states have call successors, (21), 1 states have call predecessors, (21), 13 states have return successors, (29), 14 states have call predecessors, (29), 17 states have call successors, (29) Word has length 190 [2024-11-18 14:23:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:51,610 INFO L225 Difference]: With dead ends: 473 [2024-11-18 14:23:51,613 INFO L226 Difference]: Without dead ends: 426 [2024-11-18 14:23:51,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 362 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=1284, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 14:23:51,615 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 41 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:51,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 303 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:23:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-18 14:23:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 394. [2024-11-18 14:23:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 201 states have (on average 1.0597014925373134) internal successors, (213), 201 states have internal predecessors, (213), 119 states have call successors, (119), 59 states have call predecessors, (119), 73 states have return successors, (219), 133 states have call predecessors, (219), 119 states have call successors, (219) [2024-11-18 14:23:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 551 transitions. [2024-11-18 14:23:51,674 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 551 transitions. Word has length 190 [2024-11-18 14:23:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:51,674 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 551 transitions. [2024-11-18 14:23:51,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 17 states have call successors, (21), 1 states have call predecessors, (21), 13 states have return successors, (29), 14 states have call predecessors, (29), 17 states have call successors, (29) [2024-11-18 14:23:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 551 transitions. [2024-11-18 14:23:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-18 14:23:51,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:51,678 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 23, 23, 23, 23, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:51,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 14:23:51,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:51,882 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:51,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1910939669, now seen corresponding path program 13 times [2024-11-18 14:23:51,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784355564] [2024-11-18 14:23:51,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:51,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 645 proven. 819 refuted. 0 times theorem prover too weak. 3396 trivial. 0 not checked. [2024-11-18 14:23:52,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:52,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784355564] [2024-11-18 14:23:52,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784355564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:52,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71333934] [2024-11-18 14:23:52,363 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:52,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:52,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:52,369 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:52,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:23:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:52,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 14:23:52,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 645 proven. 819 refuted. 0 times theorem prover too weak. 3396 trivial. 0 not checked. [2024-11-18 14:23:52,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 645 proven. 844 refuted. 0 times theorem prover too weak. 3371 trivial. 0 not checked. [2024-11-18 14:23:54,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71333934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:54,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:54,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 21] total 23 [2024-11-18 14:23:54,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870426942] [2024-11-18 14:23:54,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:54,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:23:54,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:54,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:23:54,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:23:54,406 INFO L87 Difference]: Start difference. First operand 394 states and 551 transitions. Second operand has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 19 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (30), 10 states have call predecessors, (30), 19 states have call successors, (30) [2024-11-18 14:23:54,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:54,678 INFO L93 Difference]: Finished difference Result 570 states and 838 transitions. [2024-11-18 14:23:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 14:23:54,679 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 19 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (30), 10 states have call predecessors, (30), 19 states have call successors, (30) Word has length 264 [2024-11-18 14:23:54,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:54,682 INFO L225 Difference]: With dead ends: 570 [2024-11-18 14:23:54,682 INFO L226 Difference]: Without dead ends: 464 [2024-11-18 14:23:54,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 516 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=355, Invalid=977, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 14:23:54,683 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 52 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:54,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 239 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-11-18 14:23:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 391. [2024-11-18 14:23:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 200 states have (on average 1.06) internal successors, (212), 200 states have internal predecessors, (212), 119 states have call successors, (119), 60 states have call predecessors, (119), 71 states have return successors, (203), 130 states have call predecessors, (203), 119 states have call successors, (203) [2024-11-18 14:23:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 534 transitions. [2024-11-18 14:23:54,736 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 534 transitions. Word has length 264 [2024-11-18 14:23:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:54,737 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 534 transitions. [2024-11-18 14:23:54,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 19 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (30), 10 states have call predecessors, (30), 19 states have call successors, (30) [2024-11-18 14:23:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 534 transitions. [2024-11-18 14:23:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-18 14:23:54,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:54,740 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:54,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 14:23:54,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 14:23:54,945 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:54,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:54,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1351583765, now seen corresponding path program 14 times [2024-11-18 14:23:54,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:54,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742804716] [2024-11-18 14:23:54,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:54,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:55,062 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:55,063 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 254 proven. 1090 refuted. 0 times theorem prover too weak. 7428 trivial. 0 not checked. [2024-11-18 14:23:55,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742804716] [2024-11-18 14:23:55,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742804716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579652680] [2024-11-18 14:23:55,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:55,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:55,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:55,723 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:55,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:23:55,981 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:55,982 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:55,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 14:23:55,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 254 proven. 1087 refuted. 0 times theorem prover too weak. 7431 trivial. 0 not checked. [2024-11-18 14:23:56,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 254 proven. 1121 refuted. 0 times theorem prover too weak. 7397 trivial. 0 not checked. [2024-11-18 14:23:58,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579652680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:58,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:58,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 27 [2024-11-18 14:23:58,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620004010] [2024-11-18 14:23:58,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:58,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 14:23:58,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 14:23:58,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:23:58,088 INFO L87 Difference]: Start difference. First operand 391 states and 534 transitions. Second operand has 27 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 17 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2024-11-18 14:23:58,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:58,418 INFO L93 Difference]: Finished difference Result 424 states and 567 transitions. [2024-11-18 14:23:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:23:58,419 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 17 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) Word has length 344 [2024-11-18 14:23:58,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:58,421 INFO L225 Difference]: With dead ends: 424 [2024-11-18 14:23:58,421 INFO L226 Difference]: Without dead ends: 420 [2024-11-18 14:23:58,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 673 SyntacticMatches, 11 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 14:23:58,422 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 32 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:58,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 211 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:23:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-18 14:23:58,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 394. [2024-11-18 14:23:58,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 202 states have (on average 1.0594059405940595) internal successors, (214), 202 states have internal predecessors, (214), 119 states have call successors, (119), 60 states have call predecessors, (119), 72 states have return successors, (204), 131 states have call predecessors, (204), 119 states have call successors, (204) [2024-11-18 14:23:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 537 transitions. [2024-11-18 14:23:58,474 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 537 transitions. Word has length 344 [2024-11-18 14:23:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:58,475 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 537 transitions. [2024-11-18 14:23:58,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 17 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2024-11-18 14:23:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 537 transitions. [2024-11-18 14:23:58,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 14:23:58,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:58,480 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:58,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 14:23:58,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 14:23:58,681 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:58,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash -430264399, now seen corresponding path program 15 times [2024-11-18 14:23:58,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516408681] [2024-11-18 14:23:58,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:58,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:58,817 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 55 check-sat command(s) [2024-11-18 14:23:58,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 154 proven. 2940 refuted. 0 times theorem prover too weak. 5700 trivial. 0 not checked. [2024-11-18 14:24:01,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:01,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516408681] [2024-11-18 14:24:01,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516408681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:01,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662844326] [2024-11-18 14:24:01,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:24:01,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:01,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:01,976 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:01,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 14:24:02,402 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 55 check-sat command(s) [2024-11-18 14:24:02,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:02,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 339 conjuncts are in the unsatisfiable core [2024-11-18 14:24:02,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 2940 refuted. 0 times theorem prover too weak. 5854 trivial. 0 not checked. [2024-11-18 14:24:03,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 8644 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-18 14:24:10,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662844326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:10,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:10,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 108] total 139 [2024-11-18 14:24:10,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247555645] [2024-11-18 14:24:10,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:10,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-11-18 14:24:10,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:10,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-11-18 14:24:10,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=18689, Unknown=0, NotChecked=0, Total=19182 [2024-11-18 14:24:10,371 INFO L87 Difference]: Start difference. First operand 394 states and 537 transitions. Second operand has 139 states, 104 states have (on average 1.7211538461538463) internal successors, (179), 106 states have internal predecessors, (179), 54 states have call successors, (77), 36 states have call predecessors, (77), 68 states have return successors, (91), 70 states have call predecessors, (91), 54 states have call successors, (91)