./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/cohencu-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/cohencu-ll_valuebound1.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 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 02:12:25,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 02:12:25,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 02:12:25,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 02:12:25,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 02:12:25,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 02:12:25,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 02:12:25,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 02:12:25,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 02:12:25,380 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 02:12:25,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 02:12:25,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 02:12:25,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 02:12:25,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 02:12:25,381 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 02:12:25,382 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 02:12:25,382 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 02:12:25,382 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 02:12:25,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 02:12:25,383 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 02:12:25,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 02:12:25,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 02:12:25,384 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 02:12:25,385 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 02:12:25,385 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 02:12:25,386 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 02:12:25,386 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 02:12:25,386 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 02:12:25,386 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 02:12:25,386 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 02:12:25,387 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 02:12:25,387 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 02:12:25,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:12:25,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 02:12:25,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 02:12:25,388 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 02:12:25,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 02:12:25,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 02:12:25,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 02:12:25,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 02:12:25,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 02:12:25,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 02:12:25,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d [2024-10-14 02:12:25,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 02:12:25,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 02:12:25,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 02:12:25,657 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 02:12:25,657 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 02:12:25,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2024-10-14 02:12:27,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 02:12:27,321 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 02:12:27,321 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2024-10-14 02:12:27,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce9c65c19/30a3b3ea64fe4381acb699ce69756429/FLAG6f2db3fcc [2024-10-14 02:12:27,696 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce9c65c19/30a3b3ea64fe4381acb699ce69756429 [2024-10-14 02:12:27,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 02:12:27,699 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 02:12:27,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 02:12:27,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 02:12:27,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 02:12:27,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:27,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcb71aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27, skipping insertion in model container [2024-10-14 02:12:27,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:27,729 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 02:12:27,874 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/cohencu-ll_valuebound1.c[588,601] [2024-10-14 02:12:27,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:12:27,907 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 02:12:27,921 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/cohencu-ll_valuebound1.c[588,601] [2024-10-14 02:12:27,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:12:27,951 INFO L204 MainTranslator]: Completed translation [2024-10-14 02:12:27,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27 WrapperNode [2024-10-14 02:12:27,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 02:12:27,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 02:12:27,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 02:12:27,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 02:12:27,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:27,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:27,983 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2024-10-14 02:12:27,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 02:12:27,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 02:12:27,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 02:12:27,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 02:12:28,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:28,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:28,010 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:28,019 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]. [2024-10-14 02:12:28,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:28,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:28,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:28,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:28,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:28,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:28,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 02:12:28,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 02:12:28,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 02:12:28,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 02:12:28,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (1/1) ... [2024-10-14 02:12:28,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:12:28,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:12:28,071 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) [2024-10-14 02:12:28,073 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 [2024-10-14 02:12:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 02:12:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 02:12:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 02:12:28,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 02:12:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 02:12:28,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 02:12:28,177 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 02:12:28,179 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 02:12:28,316 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-14 02:12:28,316 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 02:12:28,344 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 02:12:28,344 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 02:12:28,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:12:28 BoogieIcfgContainer [2024-10-14 02:12:28,344 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 02:12:28,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 02:12:28,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 02:12:28,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 02:12:28,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:12:27" (1/3) ... [2024-10-14 02:12:28,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae1351e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:12:28, skipping insertion in model container [2024-10-14 02:12:28,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:12:27" (2/3) ... [2024-10-14 02:12:28,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae1351e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:12:28, skipping insertion in model container [2024-10-14 02:12:28,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:12:28" (3/3) ... [2024-10-14 02:12:28,356 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound1.c [2024-10-14 02:12:28,372 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 02:12:28,372 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 02:12:28,430 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 02:12:28,437 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;@60fffe1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 02:12:28,437 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 02:12:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 02:12:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 02:12:28,448 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:28,449 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:28,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:28,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2080946738, now seen corresponding path program 1 times [2024-10-14 02:12:28,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:28,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842645286] [2024-10-14 02:12:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:12:28,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:28,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842645286] [2024-10-14 02:12:28,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842645286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:12:28,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:12:28,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 02:12:28,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207224465] [2024-10-14 02:12:28,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:12:28,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 02:12:28,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:28,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 02:12:28,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 02:12:28,665 INFO L87 Difference]: Start difference. First operand has 24 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-10-14 02:12:28,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:28,700 INFO L93 Difference]: Finished difference Result 46 states and 84 transitions. [2024-10-14 02:12:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 02:12:28,703 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 8 [2024-10-14 02:12:28,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:28,710 INFO L225 Difference]: With dead ends: 46 [2024-10-14 02:12:28,710 INFO L226 Difference]: Without dead ends: 22 [2024-10-14 02:12:28,714 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 [2024-10-14 02:12:28,720 INFO L432 NwaCegarLoop]: 32 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, 32 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 [2024-10-14 02:12:28,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:12:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-14 02:12:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-14 02:12:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-14 02:12:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2024-10-14 02:12:28,769 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 8 [2024-10-14 02:12:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:28,770 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2024-10-14 02:12:28,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-10-14 02:12:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2024-10-14 02:12:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 02:12:28,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:28,772 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:28,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 02:12:28,772 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:28,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:28,773 INFO L85 PathProgramCache]: Analyzing trace with hash -304390244, now seen corresponding path program 1 times [2024-10-14 02:12:28,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:28,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446164077] [2024-10-14 02:12:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:28,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:12:29,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:29,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446164077] [2024-10-14 02:12:29,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446164077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:12:29,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:12:29,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:12:29,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680081169] [2024-10-14 02:12:29,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:12:29,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:12:29,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:29,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:12:29,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:12:29,035 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-10-14 02:12:29,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:29,145 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2024-10-14 02:12:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:12:29,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2024-10-14 02:12:29,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:29,146 INFO L225 Difference]: With dead ends: 28 [2024-10-14 02:12:29,147 INFO L226 Difference]: Without dead ends: 26 [2024-10-14 02:12:29,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:12:29,149 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:12:29,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 79 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:12:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-14 02:12:29,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-14 02:12:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-14 02:12:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-10-14 02:12:29,185 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 8 [2024-10-14 02:12:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:29,186 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-10-14 02:12:29,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-10-14 02:12:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-10-14 02:12:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-14 02:12:29,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:29,194 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:29,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 02:12:29,195 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:29,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1112146385, now seen corresponding path program 1 times [2024-10-14 02:12:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:29,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780262881] [2024-10-14 02:12:29,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:29,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:12:29,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963993566] [2024-10-14 02:12:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:29,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:12:29,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:12:29,259 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) [2024-10-14 02:12:29,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 02:12:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:29,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 02:12:29,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:12:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:12:29,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:12:29,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780262881] [2024-10-14 02:12:29,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:12:29,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963993566] [2024-10-14 02:12:29,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963993566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:12:29,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:12:29,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:12:29,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636061139] [2024-10-14 02:12:29,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:12:29,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:12:29,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:12:29,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:12:29,427 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 02:12:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:29,509 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2024-10-14 02:12:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:12:29,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-10-14 02:12:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:29,511 INFO L225 Difference]: With dead ends: 45 [2024-10-14 02:12:29,511 INFO L226 Difference]: Without dead ends: 43 [2024-10-14 02:12:29,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:12:29,512 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:12:29,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 100 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:12:29,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-14 02:12:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2024-10-14 02:12:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 02:12:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2024-10-14 02:12:29,531 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 13 [2024-10-14 02:12:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:29,531 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2024-10-14 02:12:29,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 02:12:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-10-14 02:12:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-14 02:12:29,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:29,532 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:29,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 02:12:29,736 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 [2024-10-14 02:12:29,736 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:29,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:29,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1589877564, now seen corresponding path program 1 times [2024-10-14 02:12:29,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:29,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318822009] [2024-10-14 02:12:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:12:29,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928902116] [2024-10-14 02:12:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:29,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:12:29,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:12:29,768 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) [2024-10-14 02:12:29,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 02:12:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:29,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 02:12:29,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:12:29,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 02:12:29,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:12:29,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:29,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318822009] [2024-10-14 02:12:29,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:12:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928902116] [2024-10-14 02:12:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928902116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:12:29,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:12:29,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:12:29,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668735900] [2024-10-14 02:12:29,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:12:29,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:12:29,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:29,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:12:29,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:12:29,877 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 02:12:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:29,961 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2024-10-14 02:12:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:12:29,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-10-14 02:12:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:29,963 INFO L225 Difference]: With dead ends: 49 [2024-10-14 02:12:29,965 INFO L226 Difference]: Without dead ends: 47 [2024-10-14 02:12:29,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:12:29,966 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:12:29,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 97 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:12:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-14 02:12:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2024-10-14 02:12:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-14 02:12:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2024-10-14 02:12:29,981 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 18 [2024-10-14 02:12:29,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:29,981 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2024-10-14 02:12:29,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 02:12:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2024-10-14 02:12:29,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 02:12:29,986 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:29,986 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:30,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 02:12:30,190 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 [2024-10-14 02:12:30,191 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:30,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:30,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1560032783, now seen corresponding path program 1 times [2024-10-14 02:12:30,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:30,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373128991] [2024-10-14 02:12:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:30,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:12:30,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138975941] [2024-10-14 02:12:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:30,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:12:30,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:12:30,226 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) [2024-10-14 02:12:30,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 02:12:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:30,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 02:12:30,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:12:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 02:12:30,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:12:30,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:30,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373128991] [2024-10-14 02:12:30,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:12:30,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138975941] [2024-10-14 02:12:30,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138975941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:12:30,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:12:30,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:12:30,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700668457] [2024-10-14 02:12:30,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:12:30,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:12:30,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:30,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:12:30,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:12:30,365 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 02:12:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:30,458 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2024-10-14 02:12:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:12:30,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-10-14 02:12:30,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:30,460 INFO L225 Difference]: With dead ends: 57 [2024-10-14 02:12:30,460 INFO L226 Difference]: Without dead ends: 45 [2024-10-14 02:12:30,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:12:30,461 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:12:30,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 89 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:12:30,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-14 02:12:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-14 02:12:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 02:12:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-10-14 02:12:30,479 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 23 [2024-10-14 02:12:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:30,479 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-10-14 02:12:30,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 02:12:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-10-14 02:12:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 02:12:30,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:30,483 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:30,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 02:12:30,683 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 [2024-10-14 02:12:30,684 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:30,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1769588868, now seen corresponding path program 1 times [2024-10-14 02:12:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:30,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113187019] [2024-10-14 02:12:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:12:30,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443365783] [2024-10-14 02:12:30,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:30,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:12:30,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:12:30,713 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) [2024-10-14 02:12:30,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 02:12:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:30,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 02:12:30,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:12:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-14 02:12:30,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:12:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-14 02:12:31,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:31,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113187019] [2024-10-14 02:12:31,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:12:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443365783] [2024-10-14 02:12:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443365783] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:12:31,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:12:31,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-10-14 02:12:31,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216832920] [2024-10-14 02:12:31,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:12:31,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 02:12:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 02:12:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-14 02:12:31,073 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-14 02:12:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:31,299 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2024-10-14 02:12:31,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 02:12:31,300 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 40 [2024-10-14 02:12:31,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:31,301 INFO L225 Difference]: With dead ends: 68 [2024-10-14 02:12:31,301 INFO L226 Difference]: Without dead ends: 66 [2024-10-14 02:12:31,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-10-14 02:12:31,302 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:12:31,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:12:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-10-14 02:12:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2024-10-14 02:12:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 02:12:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-10-14 02:12:31,328 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 40 [2024-10-14 02:12:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:31,329 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-10-14 02:12:31,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-14 02:12:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-10-14 02:12:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-14 02:12:31,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:31,330 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:31,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 02:12:31,534 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 [2024-10-14 02:12:31,535 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:31,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:31,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1335110159, now seen corresponding path program 2 times [2024-10-14 02:12:31,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:31,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133256722] [2024-10-14 02:12:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:31,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:12:31,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281075470] [2024-10-14 02:12:31,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 02:12:31,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:12:31,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:12:31,577 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) [2024-10-14 02:12:31,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 02:12:31,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 02:12:31,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:12:31,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-14 02:12:31,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:12:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-14 02:12:31,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:12:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-14 02:12:31,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:31,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133256722] [2024-10-14 02:12:31,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:12:31,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281075470] [2024-10-14 02:12:31,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281075470] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:12:31,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:12:31,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-10-14 02:12:31,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428113050] [2024-10-14 02:12:31,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:12:31,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 02:12:31,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:31,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 02:12:31,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-14 02:12:31,930 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-10-14 02:12:36,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-10-14 02:12:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:36,244 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2024-10-14 02:12:36,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 02:12:36,245 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 45 [2024-10-14 02:12:36,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:36,247 INFO L225 Difference]: With dead ends: 83 [2024-10-14 02:12:36,249 INFO L226 Difference]: Without dead ends: 81 [2024-10-14 02:12:36,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-10-14 02:12:36,250 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:12:36,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 141 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 187 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-10-14 02:12:36,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-14 02:12:36,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2024-10-14 02:12:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 44 states have internal predecessors, (44), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-14 02:12:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2024-10-14 02:12:36,293 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 45 [2024-10-14 02:12:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:36,293 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2024-10-14 02:12:36,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-10-14 02:12:36,293 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2024-10-14 02:12:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-14 02:12:36,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:36,298 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:36,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 02:12:36,499 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 [2024-10-14 02:12:36,499 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:36,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:36,500 INFO L85 PathProgramCache]: Analyzing trace with hash 644018972, now seen corresponding path program 3 times [2024-10-14 02:12:36,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:36,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817711138] [2024-10-14 02:12:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:36,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:12:36,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154147223] [2024-10-14 02:12:36,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 02:12:36,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:12:36,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:12:36,527 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) [2024-10-14 02:12:36,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 02:12:36,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 02:12:36,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:12:36,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 02:12:36,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:12:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-14 02:12:36,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:12:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-14 02:12:36,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:36,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817711138] [2024-10-14 02:12:36,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:12:36,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154147223] [2024-10-14 02:12:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154147223] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:12:36,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:12:36,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-10-14 02:12:36,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088505509] [2024-10-14 02:12:36,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:12:36,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 02:12:36,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 02:12:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:12:36,882 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 02:12:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:37,119 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2024-10-14 02:12:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 02:12:37,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 50 [2024-10-14 02:12:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:37,121 INFO L225 Difference]: With dead ends: 95 [2024-10-14 02:12:37,121 INFO L226 Difference]: Without dead ends: 83 [2024-10-14 02:12:37,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 02:12:37,122 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:12:37,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 160 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:12:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-14 02:12:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 66. [2024-10-14 02:12:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 02:12:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-10-14 02:12:37,149 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 50 [2024-10-14 02:12:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:37,150 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-10-14 02:12:37,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 02:12:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-10-14 02:12:37,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-14 02:12:37,151 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:37,151 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:37,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 02:12:37,355 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 [2024-10-14 02:12:37,356 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:37,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:37,357 INFO L85 PathProgramCache]: Analyzing trace with hash 811423347, now seen corresponding path program 1 times [2024-10-14 02:12:37,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:37,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248894066] [2024-10-14 02:12:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:37,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:12:37,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818211408] [2024-10-14 02:12:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:37,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:12:37,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:12:37,386 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) [2024-10-14 02:12:37,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 02:12:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:37,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 02:12:37,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:12:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-14 02:12:37,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:12:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-14 02:12:38,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:38,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248894066] [2024-10-14 02:12:38,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:12:38,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818211408] [2024-10-14 02:12:38,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818211408] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:12:38,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:12:38,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-10-14 02:12:38,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054795491] [2024-10-14 02:12:38,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:12:38,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 02:12:38,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:38,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 02:12:38,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 02:12:38,033 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-10-14 02:12:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:38,614 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2024-10-14 02:12:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 02:12:38,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 66 [2024-10-14 02:12:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:38,615 INFO L225 Difference]: With dead ends: 114 [2024-10-14 02:12:38,615 INFO L226 Difference]: Without dead ends: 112 [2024-10-14 02:12:38,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:12:38,616 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 02:12:38,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 152 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 02:12:38,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-14 02:12:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2024-10-14 02:12:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 62 states have internal predecessors, (64), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-14 02:12:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2024-10-14 02:12:38,662 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 66 [2024-10-14 02:12:38,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:38,662 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2024-10-14 02:12:38,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-10-14 02:12:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2024-10-14 02:12:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 02:12:38,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:38,664 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:38,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 02:12:38,864 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 [2024-10-14 02:12:38,865 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:38,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:38,865 INFO L85 PathProgramCache]: Analyzing trace with hash 462308408, now seen corresponding path program 1 times [2024-10-14 02:12:38,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:38,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933006608] [2024-10-14 02:12:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:38,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:12:38,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613802113] [2024-10-14 02:12:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:38,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:12:38,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:12:38,904 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) [2024-10-14 02:12:38,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 02:12:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:38,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 02:12:38,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:12:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 02:12:39,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:12:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 02:12:39,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933006608] [2024-10-14 02:12:39,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:12:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613802113] [2024-10-14 02:12:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613802113] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:12:39,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:12:39,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2024-10-14 02:12:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5580379] [2024-10-14 02:12:39,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:12:39,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 02:12:39,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 02:12:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:12:39,463 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-10-14 02:12:39,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:39,753 INFO L93 Difference]: Finished difference Result 125 states and 144 transitions. [2024-10-14 02:12:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 02:12:39,753 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 71 [2024-10-14 02:12:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:39,754 INFO L225 Difference]: With dead ends: 125 [2024-10-14 02:12:39,754 INFO L226 Difference]: Without dead ends: 109 [2024-10-14 02:12:39,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-10-14 02:12:39,755 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:12:39,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 177 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:12:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-14 02:12:39,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-10-14 02:12:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 64 states have internal predecessors, (65), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-14 02:12:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2024-10-14 02:12:39,794 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 71 [2024-10-14 02:12:39,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:39,794 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2024-10-14 02:12:39,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-10-14 02:12:39,794 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2024-10-14 02:12:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-14 02:12:39,796 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:12:39,796 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:39,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 02:12:39,997 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 [2024-10-14 02:12:39,997 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:12:39,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:12:39,998 INFO L85 PathProgramCache]: Analyzing trace with hash -198556648, now seen corresponding path program 2 times [2024-10-14 02:12:39,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:12:39,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246173868] [2024-10-14 02:12:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:12:39,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:12:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 02:12:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:12:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 02:12:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 02:12:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 02:12:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-14 02:12:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-14 02:12:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-14 02:12:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 02:12:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 02:12:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-14 02:12:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-14 02:12:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 02:12:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 02:12:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-14 02:12:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-14 02:12:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 02:12:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-14 02:12:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-14 02:12:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-14 02:12:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-14 02:12:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-14 02:12:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:12:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-14 02:12:40,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:12:40,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246173868] [2024-10-14 02:12:40,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246173868] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:12:40,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891809208] [2024-10-14 02:12:40,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 02:12:40,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:12:40,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:12:40,386 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) [2024-10-14 02:12:40,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 02:12:40,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 02:12:40,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:12:40,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 02:12:40,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:12:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 492 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-10-14 02:12:40,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:12:40,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891809208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:12:40,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:12:40,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2024-10-14 02:12:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534342977] [2024-10-14 02:12:40,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:12:40,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 02:12:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:12:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 02:12:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:12:40,655 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2024-10-14 02:12:40,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:12:40,723 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2024-10-14 02:12:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 02:12:40,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 125 [2024-10-14 02:12:40,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:12:40,725 INFO L225 Difference]: With dead ends: 129 [2024-10-14 02:12:40,725 INFO L226 Difference]: Without dead ends: 0 [2024-10-14 02:12:40,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:12:40,726 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:12:40,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:12:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-14 02:12:40,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-14 02:12:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 02:12:40,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-14 02:12:40,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2024-10-14 02:12:40,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:12:40,728 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-14 02:12:40,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2024-10-14 02:12:40,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-14 02:12:40,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-14 02:12:40,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 02:12:40,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 02:12:40,931 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 [2024-10-14 02:12:40,934 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:12:40,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-14 02:12:49,649 WARN L286 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 87 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-14 02:13:00,007 WARN L286 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 87 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-14 02:13:09,428 WARN L286 SmtUtils]: Spent 9.40s on a formula simplification. DAG size of input: 90 DAG size of output: 56 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-14 02:13:19,543 WARN L286 SmtUtils]: Spent 9.50s on a formula simplification. DAG size of input: 87 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-14 02:13:27,698 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 90 DAG size of output: 56 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-14 02:13:36,887 WARN L286 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 90 DAG size of output: 56 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-14 02:13:36,891 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 02:13:36,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 02:13:36 BoogieIcfgContainer [2024-10-14 02:13:36,913 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 02:13:36,914 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 02:13:36,914 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 02:13:36,914 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 02:13:36,914 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:12:28" (3/4) ... [2024-10-14 02:13:36,916 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 02:13:36,919 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-14 02:13:36,922 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-14 02:13:36,923 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-14 02:13:36,923 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 02:13:36,923 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 02:13:36,999 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 02:13:36,999 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 02:13:37,000 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 02:13:37,000 INFO L158 Benchmark]: Toolchain (without parser) took 69301.10ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 104.2MB in the beginning and 74.8MB in the end (delta: 29.4MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2024-10-14 02:13:37,001 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory was 128.9MB in the beginning and 128.7MB in the end (delta: 184.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 02:13:37,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.93ms. Allocated memory is still 176.2MB. Free memory was 104.0MB in the beginning and 92.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 02:13:37,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.40ms. Allocated memory is still 176.2MB. Free memory was 92.0MB in the beginning and 90.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 02:13:37,002 INFO L158 Benchmark]: Boogie Preprocessor took 47.32ms. Allocated memory is still 176.2MB. Free memory was 90.3MB in the beginning and 145.3MB in the end (delta: -55.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-14 02:13:37,002 INFO L158 Benchmark]: RCFGBuilder took 312.40ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 145.2MB in the beginning and 172.8MB in the end (delta: -27.6MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2024-10-14 02:13:37,002 INFO L158 Benchmark]: TraceAbstraction took 68565.24ms. Allocated memory is still 211.8MB. Free memory was 171.7MB in the beginning and 79.0MB in the end (delta: 92.7MB). Peak memory consumption was 113.8MB. Max. memory is 16.1GB. [2024-10-14 02:13:37,003 INFO L158 Benchmark]: Witness Printer took 86.17ms. Allocated memory is still 211.8MB. Free memory was 79.0MB in the beginning and 74.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 02:13:37,004 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory was 128.9MB in the beginning and 128.7MB in the end (delta: 184.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.93ms. Allocated memory is still 176.2MB. Free memory was 104.0MB in the beginning and 92.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.40ms. Allocated memory is still 176.2MB. Free memory was 92.0MB in the beginning and 90.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.32ms. Allocated memory is still 176.2MB. Free memory was 90.3MB in the beginning and 145.3MB in the end (delta: -55.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 312.40ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 145.2MB in the beginning and 172.8MB in the end (delta: -27.6MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * TraceAbstraction took 68565.24ms. Allocated memory is still 211.8MB. Free memory was 171.7MB in the beginning and 79.0MB in the end (delta: 92.7MB). Peak memory consumption was 113.8MB. Max. memory is 16.1GB. * Witness Printer took 86.17ms. Allocated memory is still 211.8MB. Free memory was 79.0MB in the beginning and 74.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.5s, OverallIterations: 11, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 108 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 1221 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 917 mSDsCounter, 178 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 877 IncrementalHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 178 mSolverCounterUnsat, 304 mSDtfsCounter, 877 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 789 GetRequests, 693 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=10, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 52 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 918 NumberOfCodeBlocks, 888 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 847 ConstructedInterpolants, 0 QuantifiedInterpolants, 3335 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1073 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 3622/3756 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((((a <= 1) && (7 == y)) && (z == 12)) && (x == 1)) && (n == 1)) && (0 <= a)) || ((((((a <= 1) && (y == 1)) && (n == 0)) && (0 <= a)) && (x == 0)) && (6 == z))) || ((((((a <= 1) && (((((__int128) y * z) + 6) + ((__int128) z * z)) == ((((__int128) z * 4) + ((__int128) x * 18)) + ((__int128) y * 24)))) && (z == (6 + ((__int128) 6 * n)))) && (((((__int128) 2 * y) + (6 * a)) + 10) == (((__int128) a * z) + ((__int128) 2 * z)))) && (2 <= n)) && ((((((__int128) 3 * n) + (3 * ((__int128) n * n))) + (((__int128) n * n) * n)) + 1) == ((__int128) x + y)))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-10-14 02:13:37,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE