./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/max40-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/max40-1.i -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 a8d5806586012290ae42296af495175d1f0a3275a3232981eda33ec55888f6d2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:02:09,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:02:09,800 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:02:09,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:02:09,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:02:09,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:02:09,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:02:09,821 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:02:09,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:02:09,831 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:02:09,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:02:09,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:02:09,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:02:09,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:02:09,833 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:02:09,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:02:09,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:02:09,834 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:02:09,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:02:09,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:02:09,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:02:09,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:02:09,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:02:09,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:02:09,835 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:02:09,836 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:02:09,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:02:09,836 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:02:09,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:02:09,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:02:09,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:02:09,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:02:09,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:02:09,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:02:09,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:02:09,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:02:09,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:02:09,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:02:09,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:02:09,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:02:09,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:02:09,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:02:09,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8d5806586012290ae42296af495175d1f0a3275a3232981eda33ec55888f6d2 [2024-11-18 09:02:10,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:02:10,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:02:10,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:02:10,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:02:10,082 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:02:10,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max40-1.i [2024-11-18 09:02:11,463 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:02:11,684 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:02:11,686 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max40-1.i [2024-11-18 09:02:11,700 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3453c383e/56d0e91c1ac049338e8db30f59db9ddf/FLAGa625b5aba [2024-11-18 09:02:11,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3453c383e/56d0e91c1ac049338e8db30f59db9ddf [2024-11-18 09:02:11,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:02:11,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:02:11,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:02:11,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:02:11,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:02:11,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:11" (1/1) ... [2024-11-18 09:02:11,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d45c9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:11, skipping insertion in model container [2024-11-18 09:02:11,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:11" (1/1) ... [2024-11-18 09:02:11,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:02:12,139 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max40-1.i[1290,1303] [2024-11-18 09:02:12,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:02:12,173 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:02:12,206 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max40-1.i[1290,1303] [2024-11-18 09:02:12,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:02:12,243 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:02:12,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12 WrapperNode [2024-11-18 09:02:12,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:02:12,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:02:12,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:02:12,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:02:12,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,303 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-11-18 09:02:12,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:02:12,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:02:12,306 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:02:12,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:02:12,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,354 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-18 09:02:12,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:02:12,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:02:12,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:02:12,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:02:12,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (1/1) ... [2024-11-18 09:02:12,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:02:12,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:12,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:02:12,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:02:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:02:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure max [2024-11-18 09:02:12,526 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2024-11-18 09:02:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:02:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:02:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:02:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:02:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:02:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:02:12,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:02:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:02:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:02:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:02:12,620 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:02:12,622 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:02:12,772 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-18 09:02:12,773 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:02:12,784 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:02:12,786 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 09:02:12,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:12 BoogieIcfgContainer [2024-11-18 09:02:12,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:02:12,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:02:12,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:02:12,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:02:12,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:02:11" (1/3) ... [2024-11-18 09:02:12,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c7ed06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:12, skipping insertion in model container [2024-11-18 09:02:12,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:12" (2/3) ... [2024-11-18 09:02:12,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c7ed06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:12, skipping insertion in model container [2024-11-18 09:02:12,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:12" (3/3) ... [2024-11-18 09:02:12,798 INFO L112 eAbstractionObserver]: Analyzing ICFG max40-1.i [2024-11-18 09:02:12,816 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:02:12,816 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:02:12,872 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:02:12,878 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;@49838357, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:02:12,879 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:02:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:02:12,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:12,890 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:12,891 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:12,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash 350697856, now seen corresponding path program 1 times [2024-11-18 09:02:12,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:12,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037986370] [2024-11-18 09:02:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:12,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:02:13,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:13,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037986370] [2024-11-18 09:02:13,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037986370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:02:13,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:02:13,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:02:13,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738023411] [2024-11-18 09:02:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:02:13,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:02:13,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:13,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:02:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:02:13,125 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:13,140 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2024-11-18 09:02:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:02:13,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-18 09:02:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:13,149 INFO L225 Difference]: With dead ends: 54 [2024-11-18 09:02:13,150 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 09:02:13,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:02:13,156 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:13,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 09:02:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-18 09:02:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-18 09:02:13,220 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 29 [2024-11-18 09:02:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:13,221 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-18 09:02:13,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-18 09:02:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:02:13,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:13,225 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:13,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:02:13,225 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:13,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:13,226 INFO L85 PathProgramCache]: Analyzing trace with hash -731724275, now seen corresponding path program 1 times [2024-11-18 09:02:13,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:13,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334661718] [2024-11-18 09:02:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:13,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:02:13,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:13,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334661718] [2024-11-18 09:02:13,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334661718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:02:13,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:02:13,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:02:13,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914921959] [2024-11-18 09:02:13,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:02:13,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:02:13,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:13,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:02:13,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:02:13,352 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:13,364 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2024-11-18 09:02:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:02:13,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-18 09:02:13,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:13,365 INFO L225 Difference]: With dead ends: 48 [2024-11-18 09:02:13,365 INFO L226 Difference]: Without dead ends: 27 [2024-11-18 09:02:13,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:02:13,366 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:13,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-18 09:02:13,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-18 09:02:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-18 09:02:13,371 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 29 [2024-11-18 09:02:13,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:13,371 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-18 09:02:13,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-18 09:02:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 09:02:13,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:13,372 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:13,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:02:13,372 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:13,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:13,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1391874411, now seen corresponding path program 1 times [2024-11-18 09:02:13,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:13,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969800371] [2024-11-18 09:02:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:02:13,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:13,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969800371] [2024-11-18 09:02:13,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969800371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:13,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962842340] [2024-11-18 09:02:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:13,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:13,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:13,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:13,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:02:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:13,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:02:13,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 09:02:13,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:02:13,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962842340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:02:13,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:02:13,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:02:13,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119877088] [2024-11-18 09:02:13,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:02:13,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:02:13,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:13,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:02:13,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:02:13,584 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:02:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:13,599 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-11-18 09:02:13,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:02:13,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-18 09:02:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:13,601 INFO L225 Difference]: With dead ends: 49 [2024-11-18 09:02:13,601 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 09:02:13,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:02:13,603 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:13,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 09:02:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-18 09:02:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-18 09:02:13,609 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 31 [2024-11-18 09:02:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:13,609 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-18 09:02:13,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:02:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-18 09:02:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 09:02:13,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:13,610 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:13,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:13,811 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 [2024-11-18 09:02:13,812 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:13,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1997828742, now seen corresponding path program 1 times [2024-11-18 09:02:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:13,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371257763] [2024-11-18 09:02:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 09:02:13,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371257763] [2024-11-18 09:02:13,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371257763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952515455] [2024-11-18 09:02:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:13,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:13,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:13,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:02:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:13,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:02:13,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:02:13,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:02:13,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952515455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:02:13,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:02:13,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:02:13,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580929664] [2024-11-18 09:02:13,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:02:13,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:02:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:13,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:02:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:02:13,978 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:02:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:13,989 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2024-11-18 09:02:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:02:13,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-11-18 09:02:13,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:13,990 INFO L225 Difference]: With dead ends: 44 [2024-11-18 09:02:13,990 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 09:02:13,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:02:13,991 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:13,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 09:02:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-18 09:02:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-18 09:02:13,996 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 43 [2024-11-18 09:02:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:13,997 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-18 09:02:13,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:02:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-18 09:02:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 09:02:13,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:13,998 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:14,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:02:14,202 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 [2024-11-18 09:02:14,203 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:14,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash 271283108, now seen corresponding path program 1 times [2024-11-18 09:02:14,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:14,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729152944] [2024-11-18 09:02:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:14,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:02:14,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:14,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729152944] [2024-11-18 09:02:14,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729152944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:14,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901329831] [2024-11-18 09:02:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:14,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:14,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:14,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:14,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:02:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:14,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:02:14,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:02:14,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:02:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901329831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:14,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:14,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:02:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262567478] [2024-11-18 09:02:14,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:14,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:02:14,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:14,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:02:14,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:02:14,425 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:14,444 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-11-18 09:02:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:02:14,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2024-11-18 09:02:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:14,445 INFO L225 Difference]: With dead ends: 57 [2024-11-18 09:02:14,446 INFO L226 Difference]: Without dead ends: 34 [2024-11-18 09:02:14,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:02:14,447 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:14,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-18 09:02:14,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-18 09:02:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-18 09:02:14,450 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 45 [2024-11-18 09:02:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:14,451 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-18 09:02:14,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-18 09:02:14,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 09:02:14,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:14,452 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:14,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:02:14,652 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 [2024-11-18 09:02:14,653 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:14,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:14,654 INFO L85 PathProgramCache]: Analyzing trace with hash 782852926, now seen corresponding path program 2 times [2024-11-18 09:02:14,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:14,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141180691] [2024-11-18 09:02:14,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:02:14,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:14,677 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:02:14,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 09:02:14,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141180691] [2024-11-18 09:02:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141180691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556677915] [2024-11-18 09:02:14,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:02:14,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:14,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:14,743 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:14,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:02:14,865 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:02:14,865 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:14,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:02:14,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:02:14,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:02:14,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556677915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:14,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:14,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 09:02:14,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491075922] [2024-11-18 09:02:14,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:14,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:02:14,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:14,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:02:14,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:02:14,988 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:02:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:15,033 INFO L93 Difference]: Finished difference Result 76 states and 97 transitions. [2024-11-18 09:02:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 09:02:15,033 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2024-11-18 09:02:15,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:15,034 INFO L225 Difference]: With dead ends: 76 [2024-11-18 09:02:15,034 INFO L226 Difference]: Without dead ends: 53 [2024-11-18 09:02:15,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:02:15,035 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:15,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:15,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-18 09:02:15,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2024-11-18 09:02:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-11-18 09:02:15,040 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 51 [2024-11-18 09:02:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:15,040 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-11-18 09:02:15,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:02:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-11-18 09:02:15,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 09:02:15,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:15,042 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:15,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:15,246 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 [2024-11-18 09:02:15,247 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:15,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:15,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1947040627, now seen corresponding path program 3 times [2024-11-18 09:02:15,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:15,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488340956] [2024-11-18 09:02:15,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:02:15,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:15,272 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:02:15,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-18 09:02:15,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:15,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488340956] [2024-11-18 09:02:15,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488340956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:15,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965893893] [2024-11-18 09:02:15,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:02:15,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:15,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:15,309 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:15,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:02:15,382 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:02:15,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:15,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:02:15,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-18 09:02:15,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-18 09:02:15,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965893893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:15,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:15,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:02:15,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959636843] [2024-11-18 09:02:15,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:15,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:02:15,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:15,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:02:15,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:02:15,422 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:15,443 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2024-11-18 09:02:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:02:15,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2024-11-18 09:02:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:15,444 INFO L225 Difference]: With dead ends: 75 [2024-11-18 09:02:15,444 INFO L226 Difference]: Without dead ends: 56 [2024-11-18 09:02:15,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:02:15,445 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:15,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 124 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-18 09:02:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-18 09:02:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-11-18 09:02:15,450 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 75 [2024-11-18 09:02:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:15,450 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-11-18 09:02:15,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-11-18 09:02:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-18 09:02:15,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:15,452 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:15,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:15,652 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 [2024-11-18 09:02:15,653 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:15,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1068829849, now seen corresponding path program 4 times [2024-11-18 09:02:15,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:15,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665974271] [2024-11-18 09:02:15,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:02:15,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:15,705 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:02:15,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 09:02:15,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:15,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665974271] [2024-11-18 09:02:15,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665974271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:15,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286061529] [2024-11-18 09:02:15,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:02:15,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:15,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:15,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:15,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:02:15,885 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:02:15,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:15,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:02:15,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 09:02:15,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 09:02:15,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286061529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:15,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:15,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 09:02:15,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769099191] [2024-11-18 09:02:15,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:15,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:02:15,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:15,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:02:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:02:15,951 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:15,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:15,977 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2024-11-18 09:02:15,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:02:15,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 81 [2024-11-18 09:02:15,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:15,978 INFO L225 Difference]: With dead ends: 103 [2024-11-18 09:02:15,978 INFO L226 Difference]: Without dead ends: 72 [2024-11-18 09:02:15,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:02:15,979 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:15,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 83 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-18 09:02:15,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-18 09:02:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 67 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2024-11-18 09:02:15,985 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 81 [2024-11-18 09:02:15,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:15,986 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2024-11-18 09:02:15,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:15,986 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2024-11-18 09:02:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 09:02:15,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:15,991 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:16,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:02:16,191 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 [2024-11-18 09:02:16,192 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:16,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash 755076307, now seen corresponding path program 5 times [2024-11-18 09:02:16,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:16,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929002164] [2024-11-18 09:02:16,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:02:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:16,287 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:02:16,287 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 160 proven. 226 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-18 09:02:16,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929002164] [2024-11-18 09:02:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929002164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:16,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988097642] [2024-11-18 09:02:16,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:02:16,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:16,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:16,463 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:16,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:02:16,868 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:02:16,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:16,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:02:16,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-11-18 09:02:16,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-18 09:02:17,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988097642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:17,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:17,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-18 09:02:17,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530160579] [2024-11-18 09:02:17,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:17,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 09:02:17,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 09:02:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:02:17,060 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:02:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:17,136 INFO L93 Difference]: Finished difference Result 151 states and 188 transitions. [2024-11-18 09:02:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:02:17,137 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2024-11-18 09:02:17,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:17,138 INFO L225 Difference]: With dead ends: 151 [2024-11-18 09:02:17,138 INFO L226 Difference]: Without dead ends: 104 [2024-11-18 09:02:17,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:02:17,139 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 40 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:17,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 145 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:02:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-18 09:02:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-18 09:02:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 99 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:17,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 122 transitions. [2024-11-18 09:02:17,149 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 122 transitions. Word has length 129 [2024-11-18 09:02:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:17,149 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 122 transitions. [2024-11-18 09:02:17,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:02:17,149 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 122 transitions. [2024-11-18 09:02:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-18 09:02:17,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:17,152 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:17,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:17,352 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 [2024-11-18 09:02:17,353 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:17,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:17,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2021894059, now seen corresponding path program 6 times [2024-11-18 09:02:17,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:17,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045551383] [2024-11-18 09:02:17,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:02:17,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:17,468 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:02:17,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:17,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:17,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045551383] [2024-11-18 09:02:17,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045551383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998955418] [2024-11-18 09:02:17,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:02:17,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:17,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:17,587 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:17,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:02:17,766 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:02:17,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:17,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:02:17,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 1634 proven. 16 refuted. 0 times theorem prover too weak. 2051 trivial. 0 not checked. [2024-11-18 09:02:17,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:17,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998955418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:17,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:17,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 09:02:17,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945087643] [2024-11-18 09:02:17,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:17,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:02:17,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:17,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:02:17,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:02:17,876 INFO L87 Difference]: Start difference. First operand 104 states and 122 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:17,913 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2024-11-18 09:02:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:02:17,914 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 225 [2024-11-18 09:02:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:17,917 INFO L225 Difference]: With dead ends: 183 [2024-11-18 09:02:17,917 INFO L226 Difference]: Without dead ends: 116 [2024-11-18 09:02:17,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:02:17,918 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:17,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 124 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:17,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-18 09:02:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-18 09:02:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.1531531531531531) internal successors, (128), 111 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2024-11-18 09:02:17,935 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 225 [2024-11-18 09:02:17,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:17,935 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2024-11-18 09:02:17,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2024-11-18 09:02:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-18 09:02:17,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:17,940 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:17,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 09:02:18,143 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 [2024-11-18 09:02:18,144 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:18,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash -478901537, now seen corresponding path program 7 times [2024-11-18 09:02:18,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:18,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070337397] [2024-11-18 09:02:18,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:02:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:18,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:18,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070337397] [2024-11-18 09:02:18,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070337397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:18,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16640542] [2024-11-18 09:02:18,554 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:02:18,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:18,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:18,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:18,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:02:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:18,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:02:18,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:18,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:18,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16640542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:18,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:18,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 09:02:18,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288968542] [2024-11-18 09:02:18,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:18,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 09:02:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:18,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 09:02:18,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:02:18,957 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:19,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:19,004 INFO L93 Difference]: Finished difference Result 233 states and 280 transitions. [2024-11-18 09:02:19,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:02:19,005 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 237 [2024-11-18 09:02:19,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:19,006 INFO L225 Difference]: With dead ends: 233 [2024-11-18 09:02:19,006 INFO L226 Difference]: Without dead ends: 140 [2024-11-18 09:02:19,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:02:19,007 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:19,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:19,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-18 09:02:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-18 09:02:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.125925925925926) internal successors, (152), 135 states have internal predecessors, (152), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2024-11-18 09:02:19,014 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 237 [2024-11-18 09:02:19,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:19,014 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2024-11-18 09:02:19,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2024-11-18 09:02:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-18 09:02:19,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:19,017 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 22, 22, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:19,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 09:02:19,217 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 [2024-11-18 09:02:19,217 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:19,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:19,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1239639111, now seen corresponding path program 8 times [2024-11-18 09:02:19,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:19,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423773167] [2024-11-18 09:02:19,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:02:19,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:19,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:02:19,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:20,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:20,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423773167] [2024-11-18 09:02:20,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423773167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:20,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352010373] [2024-11-18 09:02:20,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:02:20,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:20,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:20,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:20,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:02:20,555 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:02:20,556 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:20,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 09:02:20,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:20,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:21,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352010373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:21,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:21,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2024-11-18 09:02:21,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168225745] [2024-11-18 09:02:21,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:21,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 09:02:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:21,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 09:02:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 09:02:21,382 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand has 43 states, 43 states have (on average 2.604651162790698) internal successors, (112), 43 states have internal predecessors, (112), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:21,497 INFO L93 Difference]: Finished difference Result 269 states and 322 transitions. [2024-11-18 09:02:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-18 09:02:21,498 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.604651162790698) internal successors, (112), 43 states have internal predecessors, (112), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 261 [2024-11-18 09:02:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:21,499 INFO L225 Difference]: With dead ends: 269 [2024-11-18 09:02:21,499 INFO L226 Difference]: Without dead ends: 176 [2024-11-18 09:02:21,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 498 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 09:02:21,500 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:21,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 128 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:02:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-18 09:02:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-18 09:02:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.0994152046783625) internal successors, (188), 171 states have internal predecessors, (188), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 194 transitions. [2024-11-18 09:02:21,520 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 194 transitions. Word has length 261 [2024-11-18 09:02:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:21,521 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 194 transitions. [2024-11-18 09:02:21,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.604651162790698) internal successors, (112), 43 states have internal predecessors, (112), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 194 transitions. [2024-11-18 09:02:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-18 09:02:21,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:21,524 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 40, 40, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:21,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 09:02:21,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 09:02:21,725 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:21,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash -609603229, now seen corresponding path program 9 times [2024-11-18 09:02:21,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:21,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573596518] [2024-11-18 09:02:21,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:02:21,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:21,867 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:02:21,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5285 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5185 trivial. 0 not checked. [2024-11-18 09:02:22,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:22,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573596518] [2024-11-18 09:02:22,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573596518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:22,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165775934] [2024-11-18 09:02:22,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:02:22,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:22,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:22,295 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:22,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:02:22,882 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:02:22,882 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:22,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:02:22,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5285 backedges. 1634 proven. 100 refuted. 0 times theorem prover too weak. 3551 trivial. 0 not checked. [2024-11-18 09:02:22,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5285 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5185 trivial. 0 not checked. [2024-11-18 09:02:23,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165775934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:23,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:23,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 09:02:23,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127753641] [2024-11-18 09:02:23,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:23,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 09:02:23,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 09:02:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:02:23,165 INFO L87 Difference]: Start difference. First operand 176 states and 194 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:23,241 INFO L93 Difference]: Finished difference Result 267 states and 311 transitions. [2024-11-18 09:02:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:02:23,242 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 297 [2024-11-18 09:02:23,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:23,243 INFO L225 Difference]: With dead ends: 267 [2024-11-18 09:02:23,245 INFO L226 Difference]: Without dead ends: 200 [2024-11-18 09:02:23,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:02:23,247 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:23,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 124 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:02:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-18 09:02:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-11-18 09:02:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.087179487179487) internal successors, (212), 195 states have internal predecessors, (212), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 218 transitions. [2024-11-18 09:02:23,264 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 218 transitions. Word has length 297 [2024-11-18 09:02:23,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:23,264 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 218 transitions. [2024-11-18 09:02:23,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 218 transitions. [2024-11-18 09:02:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-18 09:02:23,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:23,268 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 40, 40, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:23,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:02:23,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 09:02:23,469 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:23,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:23,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1260838453, now seen corresponding path program 10 times [2024-11-18 09:02:23,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:23,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196562337] [2024-11-18 09:02:23,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:02:23,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:23,549 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:02:23,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5669 backedges. 1632 proven. 378 refuted. 0 times theorem prover too weak. 3659 trivial. 0 not checked. [2024-11-18 09:02:24,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196562337] [2024-11-18 09:02:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196562337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068323351] [2024-11-18 09:02:24,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:02:24,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:24,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:24,051 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:24,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:02:24,306 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:02:24,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:24,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 09:02:24,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5669 backedges. 1628 proven. 378 refuted. 0 times theorem prover too weak. 3663 trivial. 0 not checked. [2024-11-18 09:02:24,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5669 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 3659 trivial. 0 not checked. [2024-11-18 09:02:24,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068323351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:24,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:24,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-18 09:02:24,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268549490] [2024-11-18 09:02:24,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:24,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 09:02:24,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:24,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 09:02:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:02:24,740 INFO L87 Difference]: Start difference. First operand 200 states and 218 transitions. Second operand has 32 states, 32 states have (on average 4.78125) internal successors, (153), 32 states have internal predecessors, (153), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 09:02:24,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:24,836 INFO L93 Difference]: Finished difference Result 379 states and 448 transitions. [2024-11-18 09:02:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 09:02:24,837 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.78125) internal successors, (153), 32 states have internal predecessors, (153), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 321 [2024-11-18 09:02:24,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:24,838 INFO L225 Difference]: With dead ends: 379 [2024-11-18 09:02:24,838 INFO L226 Difference]: Without dead ends: 264 [2024-11-18 09:02:24,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:02:24,839 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 120 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:24,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 177 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:02:24,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-18 09:02:24,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-11-18 09:02:24,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 259 states have (on average 1.1274131274131274) internal successors, (292), 259 states have internal predecessors, (292), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 298 transitions. [2024-11-18 09:02:24,847 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 298 transitions. Word has length 321 [2024-11-18 09:02:24,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:24,847 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 298 transitions. [2024-11-18 09:02:24,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.78125) internal successors, (153), 32 states have internal predecessors, (153), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 09:02:24,847 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 298 transitions. [2024-11-18 09:02:24,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-11-18 09:02:24,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:24,852 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 90, 40, 40, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:24,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:25,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 09:02:25,058 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:25,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:25,058 INFO L85 PathProgramCache]: Analyzing trace with hash -689653893, now seen corresponding path program 11 times [2024-11-18 09:02:25,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:25,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119836237] [2024-11-18 09:02:25,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:02:25,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:28,144 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2024-11-18 09:02:28,145 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 18389 backedges. 3664 proven. 5434 refuted. 0 times theorem prover too weak. 9291 trivial. 0 not checked. [2024-11-18 09:02:29,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119836237] [2024-11-18 09:02:29,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119836237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056055101] [2024-11-18 09:02:29,605 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:02:29,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:29,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:29,609 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:29,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process