./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.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 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 19:08:52,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 19:08:52,255 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 19:08:52,260 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 19:08:52,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 19:08:52,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 19:08:52,288 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 19:08:52,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 19:08:52,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 19:08:52,289 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 19:08:52,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 19:08:52,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 19:08:52,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 19:08:52,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 19:08:52,291 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 19:08:52,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 19:08:52,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 19:08:52,293 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 19:08:52,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 19:08:52,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 19:08:52,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 19:08:52,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 19:08:52,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 19:08:52,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 19:08:52,297 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 19:08:52,297 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 19:08:52,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 19:08:52,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 19:08:52,298 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 19:08:52,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 19:08:52,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 19:08:52,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 19:08:52,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:08:52,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 19:08:52,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 19:08:52,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 19:08:52,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 19:08:52,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 19:08:52,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 19:08:52,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 19:08:52,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 19:08:52,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 19:08:52,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 [2024-10-12 19:08:52,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 19:08:52,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 19:08:52,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 19:08:52,536 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 19:08:52,536 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 19:08:52,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2024-10-12 19:08:53,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 19:08:54,078 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 19:08:54,079 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2024-10-12 19:08:54,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e8ac81ea/40f8d61e3e9d4fecac622bb978712a34/FLAGf7924be05 [2024-10-12 19:08:54,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e8ac81ea/40f8d61e3e9d4fecac622bb978712a34 [2024-10-12 19:08:54,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 19:08:54,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 19:08:54,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 19:08:54,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 19:08:54,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 19:08:54,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4545cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54, skipping insertion in model container [2024-10-12 19:08:54,124 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,146 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 19:08:54,300 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c[458,471] [2024-10-12 19:08:54,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:08:54,324 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 19:08:54,334 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c[458,471] [2024-10-12 19:08:54,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:08:54,353 INFO L204 MainTranslator]: Completed translation [2024-10-12 19:08:54,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54 WrapperNode [2024-10-12 19:08:54,353 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 19:08:54,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 19:08:54,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 19:08:54,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 19:08:54,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,385 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2024-10-12 19:08:54,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 19:08:54,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 19:08:54,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 19:08:54,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 19:08:54,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,396 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,414 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 19:08:54,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 19:08:54,430 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 19:08:54,430 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 19:08:54,430 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 19:08:54,431 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (1/1) ... [2024-10-12 19:08:54,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:08:54,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:08:54,463 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) [2024-10-12 19:08:54,471 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 [2024-10-12 19:08:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 19:08:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 19:08:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 19:08:54,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 19:08:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 19:08:54,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 19:08:54,559 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 19:08:54,563 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 19:08:54,712 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-12 19:08:54,713 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 19:08:54,737 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 19:08:54,738 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 19:08:54,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:08:54 BoogieIcfgContainer [2024-10-12 19:08:54,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 19:08:54,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 19:08:54,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 19:08:54,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 19:08:54,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:08:54" (1/3) ... [2024-10-12 19:08:54,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdb4713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:08:54, skipping insertion in model container [2024-10-12 19:08:54,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:54" (2/3) ... [2024-10-12 19:08:54,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdb4713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:08:54, skipping insertion in model container [2024-10-12 19:08:54,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:08:54" (3/3) ... [2024-10-12 19:08:54,747 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound100.c [2024-10-12 19:08:54,762 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 19:08:54,762 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 19:08:54,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 19:08:54,827 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;@31273544, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 19:08:54,828 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 19:08:54,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 19:08:54,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 19:08:54,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:08:54,839 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 19:08:54,839 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:08:54,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:08:54,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2070802916, now seen corresponding path program 1 times [2024-10-12 19:08:54,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:08:54,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055437736] [2024-10-12 19:08:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:08:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:08:54,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:08:54,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055437736] [2024-10-12 19:08:54,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055437736] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:08:54,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:08:54,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:08:54,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139037682] [2024-10-12 19:08:54,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:08:54,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 19:08:54,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:08:55,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 19:08:55,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 19:08:55,012 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:08:55,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:08:55,031 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2024-10-12 19:08:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 19:08:55,033 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-12 19:08:55,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:08:55,037 INFO L225 Difference]: With dead ends: 29 [2024-10-12 19:08:55,037 INFO L226 Difference]: Without dead ends: 13 [2024-10-12 19:08:55,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 19:08:55,045 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:08:55,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:08:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-12 19:08:55,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-12 19:08:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 19:08:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-10-12 19:08:55,072 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 6 [2024-10-12 19:08:55,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:08:55,073 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-10-12 19:08:55,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:08:55,073 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2024-10-12 19:08:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-12 19:08:55,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:08:55,074 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:08:55,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 19:08:55,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:08:55,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:08:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash -170804699, now seen corresponding path program 1 times [2024-10-12 19:08:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:08:55,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486927453] [2024-10-12 19:08:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:55,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:08:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:08:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:08:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486927453] [2024-10-12 19:08:55,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486927453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:08:55,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:08:55,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:08:55,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070150839] [2024-10-12 19:08:55,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:08:55,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:08:55,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:08:55,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:08:55,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 19:08:55,167 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:08:55,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:08:55,184 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-10-12 19:08:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:08:55,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-12 19:08:55,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:08:55,187 INFO L225 Difference]: With dead ends: 23 [2024-10-12 19:08:55,187 INFO L226 Difference]: Without dead ends: 15 [2024-10-12 19:08:55,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 19:08:55,188 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:08:55,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:08:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-12 19:08:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-12 19:08:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 19:08:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-12 19:08:55,196 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 7 [2024-10-12 19:08:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:08:55,196 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-12 19:08:55,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:08:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-12 19:08:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-12 19:08:55,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:08:55,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:08:55,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 19:08:55,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:08:55,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:08:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash -169017239, now seen corresponding path program 1 times [2024-10-12 19:08:55,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:08:55,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414067368] [2024-10-12 19:08:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:55,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:08:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 19:08:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620930084] [2024-10-12 19:08:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:55,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:55,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:08:55,210 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) [2024-10-12 19:08:55,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 19:08:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:55,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:08:55,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:08:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:08:55,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:08:55,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:08:55,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414067368] [2024-10-12 19:08:55,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 19:08:55,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620930084] [2024-10-12 19:08:55,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620930084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:08:55,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:08:55,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 19:08:55,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093955073] [2024-10-12 19:08:55,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:08:55,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:08:55,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:08:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:08:55,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 19:08:55,394 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:08:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:08:55,437 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-10-12 19:08:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:08:55,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-12 19:08:55,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:08:55,439 INFO L225 Difference]: With dead ends: 25 [2024-10-12 19:08:55,439 INFO L226 Difference]: Without dead ends: 21 [2024-10-12 19:08:55,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:08:55,440 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:08:55,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:08:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-12 19:08:55,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-12 19:08:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 19:08:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-10-12 19:08:55,445 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2024-10-12 19:08:55,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:08:55,445 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-10-12 19:08:55,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:08:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-10-12 19:08:55,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-12 19:08:55,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:08:55,446 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:08:55,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 19:08:55,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:55,648 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:08:55,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:08:55,648 INFO L85 PathProgramCache]: Analyzing trace with hash 867499275, now seen corresponding path program 1 times [2024-10-12 19:08:55,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:08:55,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335539125] [2024-10-12 19:08:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:55,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:08:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:55,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 19:08:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:08:55,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:08:55,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335539125] [2024-10-12 19:08:55,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335539125] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:08:55,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174672678] [2024-10-12 19:08:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:55,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:55,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:08:55,746 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) [2024-10-12 19:08:55,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 19:08:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:55,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 19:08:55,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:08:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:08:55,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:08:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:08:55,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174672678] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:08:55,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:08:55,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 10 [2024-10-12 19:08:55,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732568622] [2024-10-12 19:08:55,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:08:55,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 19:08:55,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:08:55,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 19:08:55,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:08:55,849 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 19:08:55,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:08:55,922 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2024-10-12 19:08:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:08:55,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2024-10-12 19:08:55,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:08:55,924 INFO L225 Difference]: With dead ends: 55 [2024-10-12 19:08:55,924 INFO L226 Difference]: Without dead ends: 47 [2024-10-12 19:08:55,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:08:55,926 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:08:55,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 61 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:08:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-12 19:08:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2024-10-12 19:08:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-12 19:08:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2024-10-12 19:08:55,941 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 15 [2024-10-12 19:08:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:08:55,942 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2024-10-12 19:08:55,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 19:08:55,942 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2024-10-12 19:08:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-12 19:08:55,942 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:08:55,943 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:08:55,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 19:08:56,143 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,SelfDestructingSolverStorable3 [2024-10-12 19:08:56,144 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:08:56,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:08:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash 869286735, now seen corresponding path program 1 times [2024-10-12 19:08:56,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:08:56,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326616848] [2024-10-12 19:08:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:56,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:08:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 19:08:56,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609916567] [2024-10-12 19:08:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:56,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:56,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:08:56,161 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) [2024-10-12 19:08:56,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 19:08:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:56,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 19:08:56,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:08:56,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:08:56,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:08:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:08:56,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:08:56,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326616848] [2024-10-12 19:08:56,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 19:08:56,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609916567] [2024-10-12 19:08:56,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609916567] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:08:56,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 19:08:56,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2024-10-12 19:08:56,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922628557] [2024-10-12 19:08:56,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 19:08:56,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 19:08:56,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:08:56,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 19:08:56,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:08:56,331 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 19:08:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:08:56,383 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-10-12 19:08:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 19:08:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-10-12 19:08:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:08:56,384 INFO L225 Difference]: With dead ends: 57 [2024-10-12 19:08:56,384 INFO L226 Difference]: Without dead ends: 46 [2024-10-12 19:08:56,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:08:56,385 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:08:56,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 53 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:08:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-12 19:08:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2024-10-12 19:08:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-12 19:08:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2024-10-12 19:08:56,392 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 15 [2024-10-12 19:08:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:08:56,393 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2024-10-12 19:08:56,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 19:08:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2024-10-12 19:08:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-12 19:08:56,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:08:56,394 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 19:08:56,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 19:08:56,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:56,599 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:08:56,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:08:56,600 INFO L85 PathProgramCache]: Analyzing trace with hash 24753612, now seen corresponding path program 1 times [2024-10-12 19:08:56,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:08:56,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138794604] [2024-10-12 19:08:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:56,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:08:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 19:08:56,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702667762] [2024-10-12 19:08:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:56,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:56,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:08:56,616 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) [2024-10-12 19:08:56,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 19:08:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:56,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 19:08:56,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:08:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 19:08:56,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:08:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 19:08:56,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:08:56,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138794604] [2024-10-12 19:08:56,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 19:08:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702667762] [2024-10-12 19:08:56,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702667762] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:08:56,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 19:08:56,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-10-12 19:08:56,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385703689] [2024-10-12 19:08:56,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 19:08:56,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 19:08:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:08:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 19:08:56,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:08:56,952 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-12 19:08:57,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:08:57,074 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2024-10-12 19:08:57,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 19:08:57,075 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2024-10-12 19:08:57,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:08:57,076 INFO L225 Difference]: With dead ends: 48 [2024-10-12 19:08:57,076 INFO L226 Difference]: Without dead ends: 42 [2024-10-12 19:08:57,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-10-12 19:08:57,077 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:08:57,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 82 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:08:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-12 19:08:57,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-10-12 19:08:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-12 19:08:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-10-12 19:08:57,086 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 21 [2024-10-12 19:08:57,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:08:57,087 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-10-12 19:08:57,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-12 19:08:57,087 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-10-12 19:08:57,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 19:08:57,088 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:08:57,088 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-10-12 19:08:57,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 19:08:57,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:57,293 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:08:57,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:08:57,293 INFO L85 PathProgramCache]: Analyzing trace with hash -795795011, now seen corresponding path program 2 times [2024-10-12 19:08:57,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:08:57,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352864572] [2024-10-12 19:08:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:57,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:08:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:57,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 19:08:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:57,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:08:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:57,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:08:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:57,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:08:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 19:08:57,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:08:57,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352864572] [2024-10-12 19:08:57,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352864572] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:08:57,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820008322] [2024-10-12 19:08:57,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 19:08:57,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:57,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:08:57,476 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) [2024-10-12 19:08:57,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 19:08:57,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 19:08:57,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 19:08:57,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 19:08:57,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:08:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:08:57,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:08:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 19:08:57,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820008322] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:08:57,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:08:57,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 16 [2024-10-12 19:08:57,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615212729] [2024-10-12 19:08:57,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:08:57,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-12 19:08:57,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:08:57,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-12 19:08:57,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2024-10-12 19:08:57,732 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-12 19:08:57,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:08:57,894 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2024-10-12 19:08:57,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 19:08:57,895 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 39 [2024-10-12 19:08:57,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:08:57,896 INFO L225 Difference]: With dead ends: 118 [2024-10-12 19:08:57,898 INFO L226 Difference]: Without dead ends: 113 [2024-10-12 19:08:57,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=356, Unknown=0, NotChecked=0, Total=552 [2024-10-12 19:08:57,899 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 97 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:08:57,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 94 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:08:57,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-12 19:08:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 88. [2024-10-12 19:08:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-12 19:08:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2024-10-12 19:08:57,916 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 39 [2024-10-12 19:08:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:08:57,917 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2024-10-12 19:08:57,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-12 19:08:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2024-10-12 19:08:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-12 19:08:57,918 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:08:57,918 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2024-10-12 19:08:57,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 19:08:58,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:58,123 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:08:58,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:08:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1312813826, now seen corresponding path program 2 times [2024-10-12 19:08:58,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:08:58,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887503245] [2024-10-12 19:08:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:08:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 19:08:58,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498976557] [2024-10-12 19:08:58,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 19:08:58,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:58,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:08:58,141 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) [2024-10-12 19:08:58,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 19:08:58,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 19:08:58,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 19:08:58,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-12 19:08:58,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:08:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 19:08:58,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:08:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 19:08:58,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:08:58,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887503245] [2024-10-12 19:08:58,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 19:08:58,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498976557] [2024-10-12 19:08:58,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498976557] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:08:58,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 19:08:58,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-10-12 19:08:58,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206085220] [2024-10-12 19:08:58,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 19:08:58,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-12 19:08:58,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:08:58,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 19:08:58,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-10-12 19:08:58,612 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 22 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-12 19:08:58,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:08:58,852 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2024-10-12 19:08:58,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 19:08:58,852 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 45 [2024-10-12 19:08:58,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:08:58,854 INFO L225 Difference]: With dead ends: 94 [2024-10-12 19:08:58,854 INFO L226 Difference]: Without dead ends: 88 [2024-10-12 19:08:58,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-10-12 19:08:58,855 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:08:58,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 205 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:08:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-12 19:08:58,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-12 19:08:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-12 19:08:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2024-10-12 19:08:58,874 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 45 [2024-10-12 19:08:58,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:08:58,874 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2024-10-12 19:08:58,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-12 19:08:58,874 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2024-10-12 19:08:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-12 19:08:58,876 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:08:58,876 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2024-10-12 19:08:58,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 19:08:59,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:59,082 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:08:59,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:08:59,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1242040609, now seen corresponding path program 3 times [2024-10-12 19:08:59,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:08:59,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089414281] [2024-10-12 19:08:59,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:08:59,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:08:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 19:08:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:08:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:08:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:08:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 19:08:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 19:08:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-12 19:08:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 19:08:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:08:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 19:08:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:08:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-12 19:08:59,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:08:59,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089414281] [2024-10-12 19:08:59,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089414281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:08:59,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727554782] [2024-10-12 19:08:59,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 19:08:59,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:08:59,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:08:59,466 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) [2024-10-12 19:08:59,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 19:08:59,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-12 19:08:59,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 19:08:59,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-12 19:08:59,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:08:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:08:59,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:08:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-12 19:08:59,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727554782] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:08:59,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:08:59,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 28 [2024-10-12 19:08:59,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531751072] [2024-10-12 19:08:59,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:08:59,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 19:08:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:08:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 19:08:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=426, Unknown=0, NotChecked=0, Total=756 [2024-10-12 19:08:59,894 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 28 states, 28 states have (on average 3.75) internal successors, (105), 28 states have internal predecessors, (105), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) [2024-10-12 19:09:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:09:00,241 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2024-10-12 19:09:00,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-12 19:09:00,242 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.75) internal successors, (105), 28 states have internal predecessors, (105), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) Word has length 87 [2024-10-12 19:09:00,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:09:00,243 INFO L225 Difference]: With dead ends: 189 [2024-10-12 19:09:00,243 INFO L226 Difference]: Without dead ends: 184 [2024-10-12 19:09:00,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=820, Invalid=1436, Unknown=0, NotChecked=0, Total=2256 [2024-10-12 19:09:00,244 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 77 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:09:00,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 138 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:09:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-12 19:09:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-10-12 19:09:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 138 states have (on average 1.0072463768115942) internal successors, (139), 138 states have internal predecessors, (139), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-12 19:09:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2024-10-12 19:09:00,281 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 87 [2024-10-12 19:09:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:09:00,281 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2024-10-12 19:09:00,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.75) internal successors, (105), 28 states have internal predecessors, (105), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) [2024-10-12 19:09:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2024-10-12 19:09:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-12 19:09:00,286 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:09:00,286 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2024-10-12 19:09:00,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 19:09:00,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:09:00,487 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:09:00,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:09:00,487 INFO L85 PathProgramCache]: Analyzing trace with hash 539512809, now seen corresponding path program 4 times [2024-10-12 19:09:00,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:09:00,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865572128] [2024-10-12 19:09:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:09:00,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:09:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 19:09:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:09:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:09:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:09:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 19:09:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 19:09:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-12 19:09:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 19:09:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:09:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 19:09:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:09:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-12 19:09:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-12 19:09:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-12 19:09:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-12 19:09:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-12 19:09:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-12 19:09:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-12 19:09:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-12 19:09:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-12 19:09:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-12 19:09:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-12 19:09:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-12 19:09:01,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:09:01,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865572128] [2024-10-12 19:09:01,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865572128] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:09:01,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331370909] [2024-10-12 19:09:01,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 19:09:01,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:09:01,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:09:01,512 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) [2024-10-12 19:09:01,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 19:09:02,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 19:09:02,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 19:09:02,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-12 19:09:02,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:09:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:09:02,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:09:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-12 19:09:03,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331370909] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:09:03,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:09:03,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 26] total 52 [2024-10-12 19:09:03,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570990716] [2024-10-12 19:09:03,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:09:03,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-12 19:09:03,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:09:03,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-12 19:09:03,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1230, Invalid=1422, Unknown=0, NotChecked=0, Total=2652 [2024-10-12 19:09:03,089 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand has 52 states, 52 states have (on average 4.096153846153846) internal successors, (213), 52 states have internal predecessors, (213), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2024-10-12 19:09:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:09:04,242 INFO L93 Difference]: Finished difference Result 381 states and 404 transitions. [2024-10-12 19:09:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-10-12 19:09:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.096153846153846) internal successors, (213), 52 states have internal predecessors, (213), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) Word has length 183 [2024-10-12 19:09:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:09:04,245 INFO L225 Difference]: With dead ends: 381 [2024-10-12 19:09:04,245 INFO L226 Difference]: Without dead ends: 376 [2024-10-12 19:09:04,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3364, Invalid=5756, Unknown=0, NotChecked=0, Total=9120 [2024-10-12 19:09:04,248 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 221 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:09:04,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 230 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:09:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-10-12 19:09:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-10-12 19:09:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 282 states have (on average 1.00354609929078) internal successors, (283), 282 states have internal predecessors, (283), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-12 19:09:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2024-10-12 19:09:04,286 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 183 [2024-10-12 19:09:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:09:04,286 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2024-10-12 19:09:04,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.096153846153846) internal successors, (213), 52 states have internal predecessors, (213), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2024-10-12 19:09:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2024-10-12 19:09:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-10-12 19:09:04,290 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:09:04,291 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1] [2024-10-12 19:09:04,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 19:09:04,491 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,SelfDestructingSolverStorable9 [2024-10-12 19:09:04,492 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:09:04,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:09:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash -890061447, now seen corresponding path program 5 times [2024-10-12 19:09:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:09:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888654449] [2024-10-12 19:09:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:09:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:09:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 19:09:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:09:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:09:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:09:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 19:09:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 19:09:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-12 19:09:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 19:09:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:09:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 19:09:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:09:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-12 19:09:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-12 19:09:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-12 19:09:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-12 19:09:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-12 19:09:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-12 19:09:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-12 19:09:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-12 19:09:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-12 19:09:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-12 19:09:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-12 19:09:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-12 19:09:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-12 19:09:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-12 19:09:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-12 19:09:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-12 19:09:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-12 19:09:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-12 19:09:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-12 19:09:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-12 19:09:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-12 19:09:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-12 19:09:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-12 19:09:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-12 19:09:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-12 19:09:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-12 19:09:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-10-12 19:09:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-12 19:09:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-12 19:09:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-12 19:09:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-12 19:09:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-10-12 19:09:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-10-12 19:09:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-10-12 19:09:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-10-12 19:09:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-10-12 19:09:07,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:09:07,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888654449] [2024-10-12 19:09:07,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888654449] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:09:07,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256398130] [2024-10-12 19:09:07,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 19:09:07,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:09:07,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:09:07,199 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) [2024-10-12 19:09:07,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 19:09:08,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-10-12 19:09:08,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 19:09:08,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-10-12 19:09:08,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:09:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:09:09,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:09:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-10-12 19:09:11,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256398130] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:09:11,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:09:11,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 49, 50] total 100 [2024-10-12 19:09:11,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314640126] [2024-10-12 19:09:11,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:09:11,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-10-12 19:09:11,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:09:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-10-12 19:09:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4758, Invalid=5142, Unknown=0, NotChecked=0, Total=9900 [2024-10-12 19:09:11,596 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand has 100 states, 100 states have (on average 4.29) internal successors, (429), 100 states have internal predecessors, (429), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) [2024-10-12 19:09:15,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:09:15,934 INFO L93 Difference]: Finished difference Result 765 states and 812 transitions. [2024-10-12 19:09:15,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2024-10-12 19:09:15,935 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 4.29) internal successors, (429), 100 states have internal predecessors, (429), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) Word has length 375 [2024-10-12 19:09:15,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:09:15,938 INFO L225 Difference]: With dead ends: 765 [2024-10-12 19:09:15,938 INFO L226 Difference]: Without dead ends: 760 [2024-10-12 19:09:15,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5640 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=13636, Invalid=23036, Unknown=0, NotChecked=0, Total=36672 [2024-10-12 19:09:15,967 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 524 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:09:15,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 417 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:09:15,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-10-12 19:09:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2024-10-12 19:09:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 570 states have (on average 1.0017543859649123) internal successors, (571), 570 states have internal predecessors, (571), 95 states have call successors, (95), 95 states have call predecessors, (95), 94 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-10-12 19:09:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 760 transitions. [2024-10-12 19:09:16,034 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 760 transitions. Word has length 375 [2024-10-12 19:09:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:09:16,035 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 760 transitions. [2024-10-12 19:09:16,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 4.29) internal successors, (429), 100 states have internal predecessors, (429), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) [2024-10-12 19:09:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 760 transitions. [2024-10-12 19:09:16,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2024-10-12 19:09:16,044 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:09:16,045 INFO L215 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1] [2024-10-12 19:09:16,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 19:09:16,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:09:16,249 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:09:16,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:09:16,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1464919911, now seen corresponding path program 6 times [2024-10-12 19:09:16,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:09:16,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763275769] [2024-10-12 19:09:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:09:16,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:09:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 19:09:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:09:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:09:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:09:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 19:09:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 19:09:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-12 19:09:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 19:09:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:09:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 19:09:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:09:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-12 19:09:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-12 19:09:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-12 19:09:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-12 19:09:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-12 19:09:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-12 19:09:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-12 19:09:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-12 19:09:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-12 19:09:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-12 19:09:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-12 19:09:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-12 19:09:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-12 19:09:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-12 19:09:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-12 19:09:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-12 19:09:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-12 19:09:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-12 19:09:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-12 19:09:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-12 19:09:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-12 19:09:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-12 19:09:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-12 19:09:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-12 19:09:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-12 19:09:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-12 19:09:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-10-12 19:09:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-12 19:09:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-12 19:09:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-12 19:09:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-12 19:09:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-10-12 19:09:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-10-12 19:09:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-10-12 19:09:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-10-12 19:09:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-10-12 19:09:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-10-12 19:09:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-10-12 19:09:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-10-12 19:09:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-10-12 19:09:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-10-12 19:09:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-10-12 19:09:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-10-12 19:09:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-10-12 19:09:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-10-12 19:09:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-10-12 19:09:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-10-12 19:09:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-10-12 19:09:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-10-12 19:09:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2024-10-12 19:09:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2024-10-12 19:09:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2024-10-12 19:09:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2024-10-12 19:09:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2024-10-12 19:09:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2024-10-12 19:09:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2024-10-12 19:09:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2024-10-12 19:09:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2024-10-12 19:09:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2024-10-12 19:09:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2024-10-12 19:09:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2024-10-12 19:09:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2024-10-12 19:09:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2024-10-12 19:09:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2024-10-12 19:09:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2024-10-12 19:09:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2024-10-12 19:09:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2024-10-12 19:09:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2024-10-12 19:09:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2024-10-12 19:09:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2024-10-12 19:09:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2024-10-12 19:09:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2024-10-12 19:09:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2024-10-12 19:09:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2024-10-12 19:09:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2024-10-12 19:09:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2024-10-12 19:09:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2024-10-12 19:09:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2024-10-12 19:09:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2024-10-12 19:09:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2024-10-12 19:09:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2024-10-12 19:09:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2024-10-12 19:09:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 747 [2024-10-12 19:09:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:09:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 188 proven. 17672 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2024-10-12 19:09:26,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:09:26,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763275769] [2024-10-12 19:09:26,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763275769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:09:26,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483485565] [2024-10-12 19:09:26,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 19:09:26,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:09:26,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:09:26,963 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) [2024-10-12 19:09:26,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process